Upgraded to testify 1.3.0.

vendor/github.com/stretchr/testify/require/require.go.tmpl

@@ -1,6 +1,6 @@
 {{.Comment}}
 func {{.DocInfo.Name}}(t TestingT, {{.Params}}) {
-	if !assert.{{.DocInfo.Name}}(t, {{.ForwardedParams}}) {
-		t.FailNow()
-	}
+	if assert.{{.DocInfo.Name}}(t, {{.ForwardedParams}}) { return }
+	if h, ok := t.(tHelper); ok { h.Helper() }
+	t.FailNow()
 }

vendor/github.com/stretchr/testify/require/require_forward.go

@@ -14,11 +14,17 @@ import (
 
 // Condition uses a Comparison to assert a complex condition.
 func (a *Assertions) Condition(comp assert.Comparison, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Condition(a.t, comp, msgAndArgs...)
 }
 
 // Conditionf uses a Comparison to assert a complex condition.
 func (a *Assertions) Conditionf(comp assert.Comparison, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Conditionf(a.t, comp, msg, args...)
 }
 
@@ -28,9 +34,10 @@ func (a *Assertions) Conditionf(comp assert.Comparison, msg string, args ...inte
 //    a.Contains("Hello World", "World")
 //    a.Contains(["Hello", "World"], "World")
 //    a.Contains({"Hello": "World"}, "Hello")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Contains(s interface{}, contains interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Contains(a.t, s, contains, msgAndArgs...)
 }
 
@@ -40,19 +47,26 @@ func (a *Assertions) Contains(s interface{}, contains interface{}, msgAndArgs ..
 //    a.Containsf("Hello World", "World", "error message %s", "formatted")
 //    a.Containsf(["Hello", "World"], "World", "error message %s", "formatted")
 //    a.Containsf({"Hello": "World"}, "Hello", "error message %s", "formatted")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Containsf(s interface{}, contains interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Containsf(a.t, s, contains, msg, args...)
 }
 
 // DirExists checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.
 func (a *Assertions) DirExists(path string, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	DirExists(a.t, path, msgAndArgs...)
 }
 
 // DirExistsf checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.
 func (a *Assertions) DirExistsf(path string, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	DirExistsf(a.t, path, msg, args...)
 }
 
@@ -60,10 +74,11 @@ func (a *Assertions) DirExistsf(path string, msg string, args ...interface{}) {
 // listB(array, slice...) ignoring the order of the elements. If there are duplicate elements,
 // the number of appearances of each of them in both lists should match.
 //
-// a.ElementsMatch([1, 3, 2, 3], [1, 3, 3, 2]))
-//
-// Returns whether the assertion was successful (true) or not (false).
+// a.ElementsMatch([1, 3, 2, 3], [1, 3, 3, 2])
 func (a *Assertions) ElementsMatch(listA interface{}, listB interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	ElementsMatch(a.t, listA, listB, msgAndArgs...)
 }
 
@@ -71,10 +86,11 @@ func (a *Assertions) ElementsMatch(listA interface{}, listB interface{}, msgAndA
 // listB(array, slice...) ignoring the order of the elements. If there are duplicate elements,
 // the number of appearances of each of them in both lists should match.
 //
-// a.ElementsMatchf([1, 3, 2, 3], [1, 3, 3, 2], "error message %s", "formatted"))
-//
-// Returns whether the assertion was successful (true) or not (false).
+// a.ElementsMatchf([1, 3, 2, 3], [1, 3, 3, 2], "error message %s", "formatted")
 func (a *Assertions) ElementsMatchf(listA interface{}, listB interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	ElementsMatchf(a.t, listA, listB, msg, args...)
 }
 
@@ -82,9 +98,10 @@ func (a *Assertions) ElementsMatchf(listA interface{}, listB interface{}, msg st
 // a slice or a channel with len == 0.
 //
 //  a.Empty(obj)
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Empty(object interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Empty(a.t, object, msgAndArgs...)
 }
 
@@ -92,9 +109,10 @@ func (a *Assertions) Empty(object interface{}, msgAndArgs ...interface{}) {
 // a slice or a channel with len == 0.
 //
 //  a.Emptyf(obj, "error message %s", "formatted")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Emptyf(object interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Emptyf(a.t, object, msg, args...)
 }
 
@@ -102,12 +120,13 @@ func (a *Assertions) Emptyf(object interface{}, msg string, args ...interface{})
 //
 //    a.Equal(123, 123)
 //
-// Returns whether the assertion was successful (true) or not (false).
-//
 // Pointer variable equality is determined based on the equality of the
 // referenced values (as opposed to the memory addresses). Function equality
 // cannot be determined and will always fail.
 func (a *Assertions) Equal(expected interface{}, actual interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Equal(a.t, expected, actual, msgAndArgs...)
 }
 
@@ -116,9 +135,10 @@ func (a *Assertions) Equal(expected interface{}, actual interface{}, msgAndArgs
 //
 //   actualObj, err := SomeFunction()
 //   a.EqualError(err,  expectedErrorString)
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) EqualError(theError error, errString string, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	EqualError(a.t, theError, errString, msgAndArgs...)
 }
 
@@ -127,9 +147,10 @@ func (a *Assertions) EqualError(theError error, errString string, msgAndArgs ...
 //
 //   actualObj, err := SomeFunction()
 //   a.EqualErrorf(err,  expectedErrorString, "error message %s", "formatted")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) EqualErrorf(theError error, errString string, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	EqualErrorf(a.t, theError, errString, msg, args...)
 }
 
@@ -137,9 +158,10 @@ func (a *Assertions) EqualErrorf(theError error, errString string, msg string, a
 // and equal.
 //
 //    a.EqualValues(uint32(123), int32(123))
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) EqualValues(expected interface{}, actual interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	EqualValues(a.t, expected, actual, msgAndArgs...)
 }
 
@@ -147,9 +169,10 @@ func (a *Assertions) EqualValues(expected interface{}, actual interface{}, msgAn
 // and equal.
 //
 //    a.EqualValuesf(uint32(123, "error message %s", "formatted"), int32(123))
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) EqualValuesf(expected interface{}, actual interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	EqualValuesf(a.t, expected, actual, msg, args...)
 }
 
@@ -157,12 +180,13 @@ func (a *Assertions) EqualValuesf(expected interface{}, actual interface{}, msg
 //
 //    a.Equalf(123, 123, "error message %s", "formatted")
 //
-// Returns whether the assertion was successful (true) or not (false).
-//
 // Pointer variable equality is determined based on the equality of the
 // referenced values (as opposed to the memory addresses). Function equality
 // cannot be determined and will always fail.
 func (a *Assertions) Equalf(expected interface{}, actual interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Equalf(a.t, expected, actual, msg, args...)
 }
 
@@ -172,9 +196,10 @@ func (a *Assertions) Equalf(expected interface{}, actual interface{}, msg string
 //   if a.Error(err) {
 // 	   assert.Equal(t, expectedError, err)
 //   }
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Error(err error, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Error(a.t, err, msgAndArgs...)
 }
 
@@ -184,115 +209,150 @@ func (a *Assertions) Error(err error, msgAndArgs ...interface{}) {
 //   if a.Errorf(err, "error message %s", "formatted") {
 // 	   assert.Equal(t, expectedErrorf, err)
 //   }
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Errorf(err error, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Errorf(a.t, err, msg, args...)
 }
 
 // Exactly asserts that two objects are equal in value and type.
 //
 //    a.Exactly(int32(123), int64(123))
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Exactly(expected interface{}, actual interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Exactly(a.t, expected, actual, msgAndArgs...)
 }
 
 // Exactlyf asserts that two objects are equal in value and type.
 //
 //    a.Exactlyf(int32(123, "error message %s", "formatted"), int64(123))
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Exactlyf(expected interface{}, actual interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Exactlyf(a.t, expected, actual, msg, args...)
 }
 
 // Fail reports a failure through
 func (a *Assertions) Fail(failureMessage string, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Fail(a.t, failureMessage, msgAndArgs...)
 }
 
 // FailNow fails test
 func (a *Assertions) FailNow(failureMessage string, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	FailNow(a.t, failureMessage, msgAndArgs...)
 }
 
 // FailNowf fails test
 func (a *Assertions) FailNowf(failureMessage string, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	FailNowf(a.t, failureMessage, msg, args...)
 }
 
 // Failf reports a failure through
 func (a *Assertions) Failf(failureMessage string, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Failf(a.t, failureMessage, msg, args...)
 }
 
 // False asserts that the specified value is false.
 //
 //    a.False(myBool)
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) False(value bool, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	False(a.t, value, msgAndArgs...)
 }
 
 // Falsef asserts that the specified value is false.
 //
 //    a.Falsef(myBool, "error message %s", "formatted")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Falsef(value bool, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Falsef(a.t, value, msg, args...)
 }
 
 // FileExists checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.
 func (a *Assertions) FileExists(path string, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	FileExists(a.t, path, msgAndArgs...)
 }
 
 // FileExistsf checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.
 func (a *Assertions) FileExistsf(path string, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	FileExistsf(a.t, path, msg, args...)
 }
 
 // HTTPBodyContains asserts that a specified handler returns a
 // body that contains a string.
 //
-//  a.HTTPBodyContains(myHandler, "www.google.com", nil, "I'm Feeling Lucky")
+//  a.HTTPBodyContains(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")
 //
 // Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) HTTPBodyContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	HTTPBodyContains(a.t, handler, method, url, values, str, msgAndArgs...)
 }
 
 // HTTPBodyContainsf asserts that a specified handler returns a
 // body that contains a string.
 //
-//  a.HTTPBodyContainsf(myHandler, "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
+//  a.HTTPBodyContainsf(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
 //
 // Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) HTTPBodyContainsf(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	HTTPBodyContainsf(a.t, handler, method, url, values, str, msg, args...)
 }
 
 // HTTPBodyNotContains asserts that a specified handler returns a
 // body that does not contain a string.
 //
-//  a.HTTPBodyNotContains(myHandler, "www.google.com", nil, "I'm Feeling Lucky")
+//  a.HTTPBodyNotContains(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")
 //
 // Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) HTTPBodyNotContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	HTTPBodyNotContains(a.t, handler, method, url, values, str, msgAndArgs...)
 }
 
 // HTTPBodyNotContainsf asserts that a specified handler returns a
 // body that does not contain a string.
 //
-//  a.HTTPBodyNotContainsf(myHandler, "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
+//  a.HTTPBodyNotContainsf(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
 //
 // Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) HTTPBodyNotContainsf(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	HTTPBodyNotContainsf(a.t, handler, method, url, values, str, msg, args...)
 }
 
@@ -302,6 +362,9 @@ func (a *Assertions) HTTPBodyNotContainsf(handler http.HandlerFunc, method strin
 //
 // Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) HTTPError(handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	HTTPError(a.t, handler, method, url, values, msgAndArgs...)
 }
 
@@ -311,6 +374,9 @@ func (a *Assertions) HTTPError(handler http.HandlerFunc, method string, url stri
 //
 // Returns whether the assertion was successful (true, "error message %s", "formatted") or not (false).
 func (a *Assertions) HTTPErrorf(handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	HTTPErrorf(a.t, handler, method, url, values, msg, args...)
 }
 
@@ -320,6 +386,9 @@ func (a *Assertions) HTTPErrorf(handler http.HandlerFunc, method string, url str
 //
 // Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) HTTPRedirect(handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	HTTPRedirect(a.t, handler, method, url, values, msgAndArgs...)
 }
 
@@ -329,6 +398,9 @@ func (a *Assertions) HTTPRedirect(handler http.HandlerFunc, method string, url s
 //
 // Returns whether the assertion was successful (true, "error message %s", "formatted") or not (false).
 func (a *Assertions) HTTPRedirectf(handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	HTTPRedirectf(a.t, handler, method, url, values, msg, args...)
 }
 
@@ -338,6 +410,9 @@ func (a *Assertions) HTTPRedirectf(handler http.HandlerFunc, method string, url
 //
 // Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) HTTPSuccess(handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	HTTPSuccess(a.t, handler, method, url, values, msgAndArgs...)
 }
 
@@ -347,6 +422,9 @@ func (a *Assertions) HTTPSuccess(handler http.HandlerFunc, method string, url st
 //
 // Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) HTTPSuccessf(handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	HTTPSuccessf(a.t, handler, method, url, values, msg, args...)
 }
 
@@ -354,6 +432,9 @@ func (a *Assertions) HTTPSuccessf(handler http.HandlerFunc, method string, url s
 //
 //    a.Implements((*MyInterface)(nil), new(MyObject))
 func (a *Assertions) Implements(interfaceObject interface{}, object interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Implements(a.t, interfaceObject, object, msgAndArgs...)
 }
 
@@ -361,96 +442,129 @@ func (a *Assertions) Implements(interfaceObject interface{}, object interface{},
 //
 //    a.Implementsf((*MyInterface, "error message %s", "formatted")(nil), new(MyObject))
 func (a *Assertions) Implementsf(interfaceObject interface{}, object interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Implementsf(a.t, interfaceObject, object, msg, args...)
 }
 
 // InDelta asserts that the two numerals are within delta of each other.
 //
 // 	 a.InDelta(math.Pi, (22 / 7.0), 0.01)
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) InDelta(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	InDelta(a.t, expected, actual, delta, msgAndArgs...)
 }
 
 // InDeltaMapValues is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.
 func (a *Assertions) InDeltaMapValues(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	InDeltaMapValues(a.t, expected, actual, delta, msgAndArgs...)
 }
 
 // InDeltaMapValuesf is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.
 func (a *Assertions) InDeltaMapValuesf(expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	InDeltaMapValuesf(a.t, expected, actual, delta, msg, args...)
 }
 
 // InDeltaSlice is the same as InDelta, except it compares two slices.
 func (a *Assertions) InDeltaSlice(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	InDeltaSlice(a.t, expected, actual, delta, msgAndArgs...)
 }
 
 // InDeltaSlicef is the same as InDelta, except it compares two slices.
 func (a *Assertions) InDeltaSlicef(expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	InDeltaSlicef(a.t, expected, actual, delta, msg, args...)
 }
 
 // InDeltaf asserts that the two numerals are within delta of each other.
 //
 // 	 a.InDeltaf(math.Pi, (22 / 7.0, "error message %s", "formatted"), 0.01)
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) InDeltaf(expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	InDeltaf(a.t, expected, actual, delta, msg, args...)
 }
 
 // InEpsilon asserts that expected and actual have a relative error less than epsilon
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) InEpsilon(expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	InEpsilon(a.t, expected, actual, epsilon, msgAndArgs...)
 }
 
 // InEpsilonSlice is the same as InEpsilon, except it compares each value from two slices.
 func (a *Assertions) InEpsilonSlice(expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	InEpsilonSlice(a.t, expected, actual, epsilon, msgAndArgs...)
 }
 
 // InEpsilonSlicef is the same as InEpsilon, except it compares each value from two slices.
 func (a *Assertions) InEpsilonSlicef(expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	InEpsilonSlicef(a.t, expected, actual, epsilon, msg, args...)
 }
 
 // InEpsilonf asserts that expected and actual have a relative error less than epsilon
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) InEpsilonf(expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	InEpsilonf(a.t, expected, actual, epsilon, msg, args...)
 }
 
 // IsType asserts that the specified objects are of the same type.
 func (a *Assertions) IsType(expectedType interface{}, object interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	IsType(a.t, expectedType, object, msgAndArgs...)
 }
 
 // IsTypef asserts that the specified objects are of the same type.
 func (a *Assertions) IsTypef(expectedType interface{}, object interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	IsTypef(a.t, expectedType, object, msg, args...)
 }
 
 // JSONEq asserts that two JSON strings are equivalent.
 //
 //  a.JSONEq(`{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) JSONEq(expected string, actual string, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	JSONEq(a.t, expected, actual, msgAndArgs...)
 }
 
 // JSONEqf asserts that two JSON strings are equivalent.
 //
 //  a.JSONEqf(`{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`, "error message %s", "formatted")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) JSONEqf(expected string, actual string, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	JSONEqf(a.t, expected, actual, msg, args...)
 }
 
@@ -458,9 +572,10 @@ func (a *Assertions) JSONEqf(expected string, actual string, msg string, args ..
 // Len also fails if the object has a type that len() not accept.
 //
 //    a.Len(mySlice, 3)
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Len(object interface{}, length int, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Len(a.t, object, length, msgAndArgs...)
 }
 
@@ -468,27 +583,30 @@ func (a *Assertions) Len(object interface{}, length int, msgAndArgs ...interface
 // Lenf also fails if the object has a type that len() not accept.
 //
 //    a.Lenf(mySlice, 3, "error message %s", "formatted")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Lenf(object interface{}, length int, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Lenf(a.t, object, length, msg, args...)
 }
 
 // Nil asserts that the specified object is nil.
 //
 //    a.Nil(err)
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Nil(object interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Nil(a.t, object, msgAndArgs...)
 }
 
 // Nilf asserts that the specified object is nil.
 //
 //    a.Nilf(err, "error message %s", "formatted")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Nilf(object interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Nilf(a.t, object, msg, args...)
 }
 
@@ -498,9 +616,10 @@ func (a *Assertions) Nilf(object interface{}, msg string, args ...interface{}) {
 //   if a.NoError(err) {
 // 	   assert.Equal(t, expectedObj, actualObj)
 //   }
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) NoError(err error, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	NoError(a.t, err, msgAndArgs...)
 }
 
@@ -510,9 +629,10 @@ func (a *Assertions) NoError(err error, msgAndArgs ...interface{}) {
 //   if a.NoErrorf(err, "error message %s", "formatted") {
 // 	   assert.Equal(t, expectedObj, actualObj)
 //   }
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) NoErrorf(err error, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	NoErrorf(a.t, err, msg, args...)
 }
 
@@ -522,9 +642,10 @@ func (a *Assertions) NoErrorf(err error, msg string, args ...interface{}) {
 //    a.NotContains("Hello World", "Earth")
 //    a.NotContains(["Hello", "World"], "Earth")
 //    a.NotContains({"Hello": "World"}, "Earth")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) NotContains(s interface{}, contains interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	NotContains(a.t, s, contains, msgAndArgs...)
 }
 
@@ -534,9 +655,10 @@ func (a *Assertions) NotContains(s interface{}, contains interface{}, msgAndArgs
 //    a.NotContainsf("Hello World", "Earth", "error message %s", "formatted")
 //    a.NotContainsf(["Hello", "World"], "Earth", "error message %s", "formatted")
 //    a.NotContainsf({"Hello": "World"}, "Earth", "error message %s", "formatted")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) NotContainsf(s interface{}, contains interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	NotContainsf(a.t, s, contains, msg, args...)
 }
 
@@ -546,9 +668,10 @@ func (a *Assertions) NotContainsf(s interface{}, contains interface{}, msg strin
 //  if a.NotEmpty(obj) {
 //    assert.Equal(t, "two", obj[1])
 //  }
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) NotEmpty(object interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	NotEmpty(a.t, object, msgAndArgs...)
 }
 
@@ -558,9 +681,10 @@ func (a *Assertions) NotEmpty(object interface{}, msgAndArgs ...interface{}) {
 //  if a.NotEmptyf(obj, "error message %s", "formatted") {
 //    assert.Equal(t, "two", obj[1])
 //  }
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) NotEmptyf(object interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	NotEmptyf(a.t, object, msg, args...)
 }
 
@@ -568,11 +692,12 @@ func (a *Assertions) NotEmptyf(object interface{}, msg string, args ...interface
 //
 //    a.NotEqual(obj1, obj2)
 //
-// Returns whether the assertion was successful (true) or not (false).
-//
 // Pointer variable equality is determined based on the equality of the
 // referenced values (as opposed to the memory addresses).
 func (a *Assertions) NotEqual(expected interface{}, actual interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	NotEqual(a.t, expected, actual, msgAndArgs...)
 }
 
@@ -580,47 +705,52 @@ func (a *Assertions) NotEqual(expected interface{}, actual interface{}, msgAndAr
 //
 //    a.NotEqualf(obj1, obj2, "error message %s", "formatted")
 //
-// Returns whether the assertion was successful (true) or not (false).
-//
 // Pointer variable equality is determined based on the equality of the
 // referenced values (as opposed to the memory addresses).
 func (a *Assertions) NotEqualf(expected interface{}, actual interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	NotEqualf(a.t, expected, actual, msg, args...)
 }
 
 // NotNil asserts that the specified object is not nil.
 //
 //    a.NotNil(err)
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) NotNil(object interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	NotNil(a.t, object, msgAndArgs...)
 }
 
 // NotNilf asserts that the specified object is not nil.
 //
 //    a.NotNilf(err, "error message %s", "formatted")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) NotNilf(object interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	NotNilf(a.t, object, msg, args...)
 }
 
 // NotPanics asserts that the code inside the specified PanicTestFunc does NOT panic.
 //
 //   a.NotPanics(func(){ RemainCalm() })
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) NotPanics(f assert.PanicTestFunc, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	NotPanics(a.t, f, msgAndArgs...)
 }
 
 // NotPanicsf asserts that the code inside the specified PanicTestFunc does NOT panic.
 //
 //   a.NotPanicsf(func(){ RemainCalm() }, "error message %s", "formatted")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) NotPanicsf(f assert.PanicTestFunc, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	NotPanicsf(a.t, f, msg, args...)
 }
 
@@ -628,9 +758,10 @@ func (a *Assertions) NotPanicsf(f assert.PanicTestFunc, msg string, args ...inte
 //
 //  a.NotRegexp(regexp.MustCompile("starts"), "it's starting")
 //  a.NotRegexp("^start", "it's not starting")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) NotRegexp(rx interface{}, str interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	NotRegexp(a.t, rx, str, msgAndArgs...)
 }
 
@@ -638,9 +769,10 @@ func (a *Assertions) NotRegexp(rx interface{}, str interface{}, msgAndArgs ...in
 //
 //  a.NotRegexpf(regexp.MustCompile("starts", "error message %s", "formatted"), "it's starting")
 //  a.NotRegexpf("^start", "it's not starting", "error message %s", "formatted")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) NotRegexpf(rx interface{}, str interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	NotRegexpf(a.t, rx, str, msg, args...)
 }
 
@@ -648,9 +780,10 @@ func (a *Assertions) NotRegexpf(rx interface{}, str interface{}, msg string, arg
 // elements given in the specified subset(array, slice...).
 //
 //    a.NotSubset([1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) NotSubset(list interface{}, subset interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	NotSubset(a.t, list, subset, msgAndArgs...)
 }
 
@@ -658,28 +791,36 @@ func (a *Assertions) NotSubset(list interface{}, subset interface{}, msgAndArgs
 // elements given in the specified subset(array, slice...).
 //
 //    a.NotSubsetf([1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]", "error message %s", "formatted")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) NotSubsetf(list interface{}, subset interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	NotSubsetf(a.t, list, subset, msg, args...)
 }
 
-// NotZero asserts that i is not the zero value for its type and returns the truth.
+// NotZero asserts that i is not the zero value for its type.
 func (a *Assertions) NotZero(i interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	NotZero(a.t, i, msgAndArgs...)
 }
 
-// NotZerof asserts that i is not the zero value for its type and returns the truth.
+// NotZerof asserts that i is not the zero value for its type.
 func (a *Assertions) NotZerof(i interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	NotZerof(a.t, i, msg, args...)
 }
 
 // Panics asserts that the code inside the specified PanicTestFunc panics.
 //
 //   a.Panics(func(){ GoCrazy() })
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Panics(f assert.PanicTestFunc, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Panics(a.t, f, msgAndArgs...)
 }
 
@@ -687,9 +828,10 @@ func (a *Assertions) Panics(f assert.PanicTestFunc, msgAndArgs ...interface{}) {
 // the recovered panic value equals the expected panic value.
 //
 //   a.PanicsWithValue("crazy error", func(){ GoCrazy() })
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) PanicsWithValue(expected interface{}, f assert.PanicTestFunc, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	PanicsWithValue(a.t, expected, f, msgAndArgs...)
 }
 
@@ -697,18 +839,20 @@ func (a *Assertions) PanicsWithValue(expected interface{}, f assert.PanicTestFun
 // the recovered panic value equals the expected panic value.
 //
 //   a.PanicsWithValuef("crazy error", func(){ GoCrazy() }, "error message %s", "formatted")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) PanicsWithValuef(expected interface{}, f assert.PanicTestFunc, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	PanicsWithValuef(a.t, expected, f, msg, args...)
 }
 
 // Panicsf asserts that the code inside the specified PanicTestFunc panics.
 //
 //   a.Panicsf(func(){ GoCrazy() }, "error message %s", "formatted")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Panicsf(f assert.PanicTestFunc, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Panicsf(a.t, f, msg, args...)
 }
 
@@ -716,9 +860,10 @@ func (a *Assertions) Panicsf(f assert.PanicTestFunc, msg string, args ...interfa
 //
 //  a.Regexp(regexp.MustCompile("start"), "it's starting")
 //  a.Regexp("start...$", "it's not starting")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Regexp(rx interface{}, str interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Regexp(a.t, rx, str, msgAndArgs...)
 }
 
@@ -726,9 +871,10 @@ func (a *Assertions) Regexp(rx interface{}, str interface{}, msgAndArgs ...inter
 //
 //  a.Regexpf(regexp.MustCompile("start", "error message %s", "formatted"), "it's starting")
 //  a.Regexpf("start...$", "it's not starting", "error message %s", "formatted")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Regexpf(rx interface{}, str interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Regexpf(a.t, rx, str, msg, args...)
 }
 
@@ -736,9 +882,10 @@ func (a *Assertions) Regexpf(rx interface{}, str interface{}, msg string, args .
 // elements given in the specified subset(array, slice...).
 //
 //    a.Subset([1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Subset(list interface{}, subset interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Subset(a.t, list, subset, msgAndArgs...)
 }
 
@@ -746,54 +893,65 @@ func (a *Assertions) Subset(list interface{}, subset interface{}, msgAndArgs ...
 // elements given in the specified subset(array, slice...).
 //
 //    a.Subsetf([1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]", "error message %s", "formatted")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Subsetf(list interface{}, subset interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Subsetf(a.t, list, subset, msg, args...)
 }
 
 // True asserts that the specified value is true.
 //
 //    a.True(myBool)
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) True(value bool, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	True(a.t, value, msgAndArgs...)
 }
 
 // Truef asserts that the specified value is true.
 //
 //    a.Truef(myBool, "error message %s", "formatted")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) Truef(value bool, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Truef(a.t, value, msg, args...)
 }
 
 // WithinDuration asserts that the two times are within duration delta of each other.
 //
 //   a.WithinDuration(time.Now(), time.Now(), 10*time.Second)
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) WithinDuration(expected time.Time, actual time.Time, delta time.Duration, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	WithinDuration(a.t, expected, actual, delta, msgAndArgs...)
 }
 
 // WithinDurationf asserts that the two times are within duration delta of each other.
 //
 //   a.WithinDurationf(time.Now(), time.Now(), 10*time.Second, "error message %s", "formatted")
-//
-// Returns whether the assertion was successful (true) or not (false).
 func (a *Assertions) WithinDurationf(expected time.Time, actual time.Time, delta time.Duration, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	WithinDurationf(a.t, expected, actual, delta, msg, args...)
 }
 
-// Zero asserts that i is the zero value for its type and returns the truth.
+// Zero asserts that i is the zero value for its type.
 func (a *Assertions) Zero(i interface{}, msgAndArgs ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Zero(a.t, i, msgAndArgs...)
 }
 
-// Zerof asserts that i is the zero value for its type and returns the truth.
+// Zerof asserts that i is the zero value for its type.
 func (a *Assertions) Zerof(i interface{}, msg string, args ...interface{}) {
+	if h, ok := a.t.(tHelper); ok {
+		h.Helper()
+	}
 	Zerof(a.t, i, msg, args...)
 }

vendor/github.com/stretchr/testify/require/require_forward.go.tmpl

@@ -1,4 +1,5 @@
 {{.CommentWithoutT "a"}}
 func (a *Assertions) {{.DocInfo.Name}}({{.Params}}) {
+	if h, ok := a.t.(tHelper); ok { h.Helper() }
 	{{.DocInfo.Name}}(a.t, {{.ForwardedParams}})
 }

vendor/github.com/stretchr/testify/require/requirements.go

@@ -6,4 +6,24 @@ type TestingT interface {
 	FailNow()
 }
 
+type tHelper interface {
+	Helper()
+}
+
+// ComparisonAssertionFunc is a common function prototype when comparing two values.  Can be useful
+// for table driven tests.
+type ComparisonAssertionFunc func(TestingT, interface{}, interface{}, ...interface{})
+
+// ValueAssertionFunc is a common function prototype when validating a single value.  Can be useful
+// for table driven tests.
+type ValueAssertionFunc func(TestingT, interface{}, ...interface{})
+
+// BoolAssertionFunc is a common function prototype when validating a bool value.  Can be useful
+// for table driven tests.
+type BoolAssertionFunc func(TestingT, bool, ...interface{})
+
+// ErrorAssertionFunc is a common function prototype when validating an error value.  Can be useful
+// for table driven tests.
+type ErrorAssertionFunc func(TestingT, error, ...interface{})
+
 //go:generate go run ../_codegen/main.go -output-package=require -template=require.go.tmpl -include-format-funcs

vendor/github.com/stretchr/testify/require/requirements_test.go

@@ -1,6 +1,7 @@
 package require
 
 import (
+	"encoding/json"
 	"errors"
 	"testing"
 	"time"
@@ -367,3 +368,199 @@ func TestJSONEq_ArraysOfDifferentOrder(t *testing.T) {
 		t.Error("Check should fail")
 	}
 }
+
+func ExampleComparisonAssertionFunc() {
+	t := &testing.T{} // provided by test
+
+	adder := func(x, y int) int {
+		return x + y
+	}
+
+	type args struct {
+		x int
+		y int
+	}
+
+	tests := []struct {
+		name      string
+		args      args
+		expect    int
+		assertion ComparisonAssertionFunc
+	}{
+		{"2+2=4", args{2, 2}, 4, Equal},
+		{"2+2!=5", args{2, 2}, 5, NotEqual},
+		{"2+3==5", args{2, 3}, 5, Exactly},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			tt.assertion(t, tt.expect, adder(tt.args.x, tt.args.y))
+		})
+	}
+}
+
+func TestComparisonAssertionFunc(t *testing.T) {
+	type iface interface {
+		Name() string
+	}
+
+	tests := []struct {
+		name      string
+		expect    interface{}
+		got       interface{}
+		assertion ComparisonAssertionFunc
+	}{
+		{"implements", (*iface)(nil), t, Implements},
+		{"isType", (*testing.T)(nil), t, IsType},
+		{"equal", t, t, Equal},
+		{"equalValues", t, t, EqualValues},
+		{"exactly", t, t, Exactly},
+		{"notEqual", t, nil, NotEqual},
+		{"notContains", []int{1, 2, 3}, 4, NotContains},
+		{"subset", []int{1, 2, 3, 4}, []int{2, 3}, Subset},
+		{"notSubset", []int{1, 2, 3, 4}, []int{0, 3}, NotSubset},
+		{"elementsMatch", []byte("abc"), []byte("bac"), ElementsMatch},
+		{"regexp", "^t.*y$", "testify", Regexp},
+		{"notRegexp", "^t.*y$", "Testify", NotRegexp},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			tt.assertion(t, tt.expect, tt.got)
+		})
+	}
+}
+
+func ExampleValueAssertionFunc() {
+	t := &testing.T{} // provided by test
+
+	dumbParse := func(input string) interface{} {
+		var x interface{}
+		json.Unmarshal([]byte(input), &x)
+		return x
+	}
+
+	tests := []struct {
+		name      string
+		arg       string
+		assertion ValueAssertionFunc
+	}{
+		{"true is not nil", "true", NotNil},
+		{"empty string is nil", "", Nil},
+		{"zero is not nil", "0", NotNil},
+		{"zero is zero", "0", Zero},
+		{"false is zero", "false", Zero},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			tt.assertion(t, dumbParse(tt.arg))
+		})
+	}
+}
+
+func TestValueAssertionFunc(t *testing.T) {
+	tests := []struct {
+		name      string
+		value     interface{}
+		assertion ValueAssertionFunc
+	}{
+		{"notNil", true, NotNil},
+		{"nil", nil, Nil},
+		{"empty", []int{}, Empty},
+		{"notEmpty", []int{1}, NotEmpty},
+		{"zero", false, Zero},
+		{"notZero", 42, NotZero},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			tt.assertion(t, tt.value)
+		})
+	}
+}
+
+func ExampleBoolAssertionFunc() {
+	t := &testing.T{} // provided by test
+
+	isOkay := func(x int) bool {
+		return x >= 42
+	}
+
+	tests := []struct {
+		name      string
+		arg       int
+		assertion BoolAssertionFunc
+	}{
+		{"-1 is bad", -1, False},
+		{"42 is good", 42, True},
+		{"41 is bad", 41, False},
+		{"45 is cool", 45, True},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			tt.assertion(t, isOkay(tt.arg))
+		})
+	}
+}
+
+func TestBoolAssertionFunc(t *testing.T) {
+	tests := []struct {
+		name      string
+		value     bool
+		assertion BoolAssertionFunc
+	}{
+		{"true", true, True},
+		{"false", false, False},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			tt.assertion(t, tt.value)
+		})
+	}
+}
+
+func ExampleErrorAssertionFunc() {
+	t := &testing.T{} // provided by test
+
+	dumbParseNum := func(input string, v interface{}) error {
+		return json.Unmarshal([]byte(input), v)
+	}
+
+	tests := []struct {
+		name      string
+		arg       string
+		assertion ErrorAssertionFunc
+	}{
+		{"1.2 is number", "1.2", NoError},
+		{"1.2.3 not number", "1.2.3", Error},
+		{"true is not number", "true", Error},
+		{"3 is number", "3", NoError},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			var x float64
+			tt.assertion(t, dumbParseNum(tt.arg, &x))
+		})
+	}
+}
+
+func TestErrorAssertionFunc(t *testing.T) {
+	tests := []struct {
+		name      string
+		err       error
+		assertion ErrorAssertionFunc
+	}{
+		{"noError", nil, NoError},
+		{"error", errors.New("whoops"), Error},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			tt.assertion(t, tt.err)
+		})
+	}
+}