vendor: update all dependencies

* Update all dependencies
  * Remove all `[[constraint]]` from Gopkg.toml
  * Add in the minimum number of `[[override]]` to build
  * Remove go get of github.com/inconshreveable/mousetrap as it is vendored
  * Update docs with new policy on constraints

vendor/github.com/stretchr/testify/assert/assertion_forward.go

@@ -13,17 +13,11 @@ import (
 
 // Condition uses a Comparison to assert a complex condition.
 func (a *Assertions) Condition(comp Comparison, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Condition(a.t, comp, msgAndArgs...)
 }
 
 // Conditionf uses a Comparison to assert a complex condition.
 func (a *Assertions) Conditionf(comp Comparison, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Conditionf(a.t, comp, msg, args...)
 }
 
@@ -34,9 +28,6 @@ func (a *Assertions) Conditionf(comp Comparison, msg string, args ...interface{}
 //    a.Contains(["Hello", "World"], "World")
 //    a.Contains({"Hello": "World"}, "Hello")
 func (a *Assertions) Contains(s interface{}, contains interface{}, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Contains(a.t, s, contains, msgAndArgs...)
 }
 
@@ -47,25 +38,16 @@ func (a *Assertions) Contains(s interface{}, contains interface{}, msgAndArgs ..
 //    a.Containsf(["Hello", "World"], "World", "error message %s", "formatted")
 //    a.Containsf({"Hello": "World"}, "Hello", "error message %s", "formatted")
 func (a *Assertions) Containsf(s interface{}, contains interface{}, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return DirExistsf(a.t, path, msg, args...)
 }
 
@@ -75,9 +57,6 @@ func (a *Assertions) DirExistsf(path string, msg string, args ...interface{}) bo
 //
 // a.ElementsMatch([1, 3, 2, 3], [1, 3, 3, 2])
 func (a *Assertions) ElementsMatch(listA interface{}, listB interface{}, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return ElementsMatch(a.t, listA, listB, msgAndArgs...)
 }
 
@@ -87,9 +66,6 @@ func (a *Assertions) ElementsMatch(listA interface{}, listB interface{}, msgAndA
 //
 // 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return ElementsMatchf(a.t, listA, listB, msg, args...)
 }
 
@@ -98,9 +74,6 @@ func (a *Assertions) ElementsMatchf(listA interface{}, listB interface{}, msg st
 //
 //  a.Empty(obj)
 func (a *Assertions) Empty(object interface{}, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Empty(a.t, object, msgAndArgs...)
 }
 
@@ -109,9 +82,6 @@ func (a *Assertions) Empty(object interface{}, msgAndArgs ...interface{}) bool {
 //
 //  a.Emptyf(obj, "error message %s", "formatted")
 func (a *Assertions) Emptyf(object interface{}, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Emptyf(a.t, object, msg, args...)
 }
 
@@ -123,9 +93,6 @@ func (a *Assertions) Emptyf(object interface{}, msg string, args ...interface{})
 // 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Equal(a.t, expected, actual, msgAndArgs...)
 }
 
@@ -135,9 +102,6 @@ func (a *Assertions) Equal(expected interface{}, actual interface{}, msgAndArgs
 //   actualObj, err := SomeFunction()
 //   a.EqualError(err,  expectedErrorString)
 func (a *Assertions) EqualError(theError error, errString string, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return EqualError(a.t, theError, errString, msgAndArgs...)
 }
 
@@ -147,9 +111,6 @@ func (a *Assertions) EqualError(theError error, errString string, msgAndArgs ...
 //   actualObj, err := SomeFunction()
 //   a.EqualErrorf(err,  expectedErrorString, "error message %s", "formatted")
 func (a *Assertions) EqualErrorf(theError error, errString string, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return EqualErrorf(a.t, theError, errString, msg, args...)
 }
 
@@ -158,9 +119,6 @@ func (a *Assertions) EqualErrorf(theError error, errString string, msg string, a
 //
 //    a.EqualValues(uint32(123), int32(123))
 func (a *Assertions) EqualValues(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return EqualValues(a.t, expected, actual, msgAndArgs...)
 }
 
@@ -169,9 +127,6 @@ func (a *Assertions) EqualValues(expected interface{}, actual interface{}, msgAn
 //
 //    a.EqualValuesf(uint32(123, "error message %s", "formatted"), int32(123))
 func (a *Assertions) EqualValuesf(expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return EqualValuesf(a.t, expected, actual, msg, args...)
 }
 
@@ -183,9 +138,6 @@ func (a *Assertions) EqualValuesf(expected interface{}, actual interface{}, msg
 // 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Equalf(a.t, expected, actual, msg, args...)
 }
 
@@ -196,9 +148,6 @@ func (a *Assertions) Equalf(expected interface{}, actual interface{}, msg string
 // 	   assert.Equal(t, expectedError, err)
 //   }
 func (a *Assertions) Error(err error, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Error(a.t, err, msgAndArgs...)
 }
 
@@ -209,9 +158,6 @@ func (a *Assertions) Error(err error, msgAndArgs ...interface{}) bool {
 // 	   assert.Equal(t, expectedErrorf, err)
 //   }
 func (a *Assertions) Errorf(err error, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Errorf(a.t, err, msg, args...)
 }
 
@@ -219,9 +165,6 @@ func (a *Assertions) Errorf(err error, msg string, args ...interface{}) bool {
 //
 //    a.Exactly(int32(123), int64(123))
 func (a *Assertions) Exactly(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Exactly(a.t, expected, actual, msgAndArgs...)
 }
 
@@ -229,41 +172,26 @@ func (a *Assertions) Exactly(expected interface{}, actual interface{}, msgAndArg
 //
 //    a.Exactlyf(int32(123, "error message %s", "formatted"), int64(123))
 func (a *Assertions) Exactlyf(expected interface{}, actual interface{}, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Exactlyf(a.t, expected, actual, msg, args...)
 }
 
 // Fail reports a failure through
 func (a *Assertions) Fail(failureMessage string, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Fail(a.t, failureMessage, msgAndArgs...)
 }
 
 // FailNow fails test
 func (a *Assertions) FailNow(failureMessage string, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return FailNow(a.t, failureMessage, msgAndArgs...)
 }
 
 // FailNowf fails test
 func (a *Assertions) FailNowf(failureMessage string, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return FailNowf(a.t, failureMessage, msg, args...)
 }
 
 // Failf reports a failure through
 func (a *Assertions) Failf(failureMessage string, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Failf(a.t, failureMessage, msg, args...)
 }
 
@@ -271,9 +199,6 @@ func (a *Assertions) Failf(failureMessage string, msg string, args ...interface{
 //
 //    a.False(myBool)
 func (a *Assertions) False(value bool, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return False(a.t, value, msgAndArgs...)
 }
 
@@ -281,25 +206,16 @@ func (a *Assertions) False(value bool, msgAndArgs ...interface{}) bool {
 //
 //    a.Falsef(myBool, "error message %s", "formatted")
 func (a *Assertions) Falsef(value bool, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return FileExistsf(a.t, path, msg, args...)
 }
 
@@ -310,9 +226,6 @@ func (a *Assertions) FileExistsf(path string, msg string, args ...interface{}) b
 //
 // 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return HTTPBodyContains(a.t, handler, method, url, values, str, msgAndArgs...)
 }
 
@@ -323,9 +236,6 @@ func (a *Assertions) HTTPBodyContains(handler http.HandlerFunc, method string, u
 //
 // 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return HTTPBodyContainsf(a.t, handler, method, url, values, str, msg, args...)
 }
 
@@ -336,9 +246,6 @@ func (a *Assertions) HTTPBodyContainsf(handler http.HandlerFunc, method string,
 //
 // 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return HTTPBodyNotContains(a.t, handler, method, url, values, str, msgAndArgs...)
 }
 
@@ -349,9 +256,6 @@ func (a *Assertions) HTTPBodyNotContains(handler http.HandlerFunc, method string
 //
 // 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return HTTPBodyNotContainsf(a.t, handler, method, url, values, str, msg, args...)
 }
 
@@ -361,9 +265,6 @@ 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return HTTPError(a.t, handler, method, url, values, msgAndArgs...)
 }
 
@@ -373,9 +274,6 @@ 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return HTTPErrorf(a.t, handler, method, url, values, msg, args...)
 }
 
@@ -385,9 +283,6 @@ 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return HTTPRedirect(a.t, handler, method, url, values, msgAndArgs...)
 }
 
@@ -397,9 +292,6 @@ 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return HTTPRedirectf(a.t, handler, method, url, values, msg, args...)
 }
 
@@ -409,9 +301,6 @@ 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return HTTPSuccess(a.t, handler, method, url, values, msgAndArgs...)
 }
 
@@ -421,9 +310,6 @@ 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return HTTPSuccessf(a.t, handler, method, url, values, msg, args...)
 }
 
@@ -431,9 +317,6 @@ 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Implements(a.t, interfaceObject, object, msgAndArgs...)
 }
 
@@ -441,9 +324,6 @@ 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Implementsf(a.t, interfaceObject, object, msg, args...)
 }
 
@@ -451,41 +331,26 @@ func (a *Assertions) Implementsf(interfaceObject interface{}, object interface{}
 //
 // 	 a.InDelta(math.Pi, (22 / 7.0), 0.01)
 func (a *Assertions) InDelta(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return InDeltaSlicef(a.t, expected, actual, delta, msg, args...)
 }
 
@@ -493,57 +358,36 @@ func (a *Assertions) InDeltaSlicef(expected interface{}, actual interface{}, del
 //
 // 	 a.InDeltaf(math.Pi, (22 / 7.0, "error message %s", "formatted"), 0.01)
 func (a *Assertions) InDeltaf(expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return InDeltaf(a.t, expected, actual, delta, msg, args...)
 }
 
 // InEpsilon asserts that expected and actual have a relative error less than epsilon
 func (a *Assertions) InEpsilon(expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return InEpsilonSlicef(a.t, expected, actual, epsilon, msg, args...)
 }
 
 // InEpsilonf asserts that expected and actual have a relative error less than epsilon
 func (a *Assertions) InEpsilonf(expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return IsTypef(a.t, expectedType, object, msg, args...)
 }
 
@@ -551,9 +395,6 @@ func (a *Assertions) IsTypef(expectedType interface{}, object interface{}, msg s
 //
 //  a.JSONEq(`{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)
 func (a *Assertions) JSONEq(expected string, actual string, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return JSONEq(a.t, expected, actual, msgAndArgs...)
 }
 
@@ -561,9 +402,6 @@ func (a *Assertions) JSONEq(expected string, actual string, msgAndArgs ...interf
 //
 //  a.JSONEqf(`{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`, "error message %s", "formatted")
 func (a *Assertions) JSONEqf(expected string, actual string, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return JSONEqf(a.t, expected, actual, msg, args...)
 }
 
@@ -572,9 +410,6 @@ func (a *Assertions) JSONEqf(expected string, actual string, msg string, args ..
 //
 //    a.Len(mySlice, 3)
 func (a *Assertions) Len(object interface{}, length int, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Len(a.t, object, length, msgAndArgs...)
 }
 
@@ -583,9 +418,6 @@ func (a *Assertions) Len(object interface{}, length int, msgAndArgs ...interface
 //
 //    a.Lenf(mySlice, 3, "error message %s", "formatted")
 func (a *Assertions) Lenf(object interface{}, length int, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Lenf(a.t, object, length, msg, args...)
 }
 
@@ -593,9 +425,6 @@ func (a *Assertions) Lenf(object interface{}, length int, msg string, args ...in
 //
 //    a.Nil(err)
 func (a *Assertions) Nil(object interface{}, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Nil(a.t, object, msgAndArgs...)
 }
 
@@ -603,9 +432,6 @@ func (a *Assertions) Nil(object interface{}, msgAndArgs ...interface{}) bool {
 //
 //    a.Nilf(err, "error message %s", "formatted")
 func (a *Assertions) Nilf(object interface{}, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Nilf(a.t, object, msg, args...)
 }
 
@@ -616,9 +442,6 @@ func (a *Assertions) Nilf(object interface{}, msg string, args ...interface{}) b
 // 	   assert.Equal(t, expectedObj, actualObj)
 //   }
 func (a *Assertions) NoError(err error, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return NoError(a.t, err, msgAndArgs...)
 }
 
@@ -629,9 +452,6 @@ func (a *Assertions) NoError(err error, msgAndArgs ...interface{}) bool {
 // 	   assert.Equal(t, expectedObj, actualObj)
 //   }
 func (a *Assertions) NoErrorf(err error, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return NoErrorf(a.t, err, msg, args...)
 }
 
@@ -642,9 +462,6 @@ func (a *Assertions) NoErrorf(err error, msg string, args ...interface{}) bool {
 //    a.NotContains(["Hello", "World"], "Earth")
 //    a.NotContains({"Hello": "World"}, "Earth")
 func (a *Assertions) NotContains(s interface{}, contains interface{}, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return NotContains(a.t, s, contains, msgAndArgs...)
 }
 
@@ -655,9 +472,6 @@ 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")
 func (a *Assertions) NotContainsf(s interface{}, contains interface{}, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return NotContainsf(a.t, s, contains, msg, args...)
 }
 
@@ -668,9 +482,6 @@ func (a *Assertions) NotContainsf(s interface{}, contains interface{}, msg strin
 //    assert.Equal(t, "two", obj[1])
 //  }
 func (a *Assertions) NotEmpty(object interface{}, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return NotEmpty(a.t, object, msgAndArgs...)
 }
 
@@ -681,9 +492,6 @@ func (a *Assertions) NotEmpty(object interface{}, msgAndArgs ...interface{}) boo
 //    assert.Equal(t, "two", obj[1])
 //  }
 func (a *Assertions) NotEmptyf(object interface{}, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return NotEmptyf(a.t, object, msg, args...)
 }
 
@@ -694,9 +502,6 @@ func (a *Assertions) NotEmptyf(object interface{}, msg string, args ...interface
 // 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return NotEqual(a.t, expected, actual, msgAndArgs...)
 }
 
@@ -707,9 +512,6 @@ func (a *Assertions) NotEqual(expected interface{}, actual interface{}, msgAndAr
 // 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{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return NotEqualf(a.t, expected, actual, msg, args...)
 }
 
@@ -717,9 +519,6 @@ func (a *Assertions) NotEqualf(expected interface{}, actual interface{}, msg str
 //
 //    a.NotNil(err)
 func (a *Assertions) NotNil(object interface{}, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return NotNil(a.t, object, msgAndArgs...)
 }
 
@@ -727,9 +526,6 @@ func (a *Assertions) NotNil(object interface{}, msgAndArgs ...interface{}) bool
 //
 //    a.NotNilf(err, "error message %s", "formatted")
 func (a *Assertions) NotNilf(object interface{}, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return NotNilf(a.t, object, msg, args...)
 }
 
@@ -737,9 +533,6 @@ func (a *Assertions) NotNilf(object interface{}, msg string, args ...interface{}
 //
 //   a.NotPanics(func(){ RemainCalm() })
 func (a *Assertions) NotPanics(f PanicTestFunc, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return NotPanics(a.t, f, msgAndArgs...)
 }
 
@@ -747,9 +540,6 @@ func (a *Assertions) NotPanics(f PanicTestFunc, msgAndArgs ...interface{}) bool
 //
 //   a.NotPanicsf(func(){ RemainCalm() }, "error message %s", "formatted")
 func (a *Assertions) NotPanicsf(f PanicTestFunc, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return NotPanicsf(a.t, f, msg, args...)
 }
 
@@ -758,9 +548,6 @@ func (a *Assertions) NotPanicsf(f PanicTestFunc, msg string, args ...interface{}
 //  a.NotRegexp(regexp.MustCompile("starts"), "it's starting")
 //  a.NotRegexp("^start", "it's not starting")
 func (a *Assertions) NotRegexp(rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return NotRegexp(a.t, rx, str, msgAndArgs...)
 }
 
@@ -769,9 +556,6 @@ 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")
 func (a *Assertions) NotRegexpf(rx interface{}, str interface{}, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return NotRegexpf(a.t, rx, str, msg, args...)
 }
 
@@ -780,9 +564,6 @@ func (a *Assertions) NotRegexpf(rx interface{}, str interface{}, msg string, arg
 //
 //    a.NotSubset([1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]")
 func (a *Assertions) NotSubset(list interface{}, subset interface{}, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return NotSubset(a.t, list, subset, msgAndArgs...)
 }
 
@@ -791,25 +572,16 @@ func (a *Assertions) NotSubset(list interface{}, subset interface{}, msgAndArgs
 //
 //    a.NotSubsetf([1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]", "error message %s", "formatted")
 func (a *Assertions) NotSubsetf(list interface{}, subset interface{}, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return NotSubsetf(a.t, list, subset, msg, args...)
 }
 
 // NotZero asserts that i is not the zero value for its type.
 func (a *Assertions) NotZero(i interface{}, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return NotZero(a.t, i, msgAndArgs...)
 }
 
 // NotZerof asserts that i is not the zero value for its type.
 func (a *Assertions) NotZerof(i interface{}, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return NotZerof(a.t, i, msg, args...)
 }
 
@@ -817,9 +589,6 @@ func (a *Assertions) NotZerof(i interface{}, msg string, args ...interface{}) bo
 //
 //   a.Panics(func(){ GoCrazy() })
 func (a *Assertions) Panics(f PanicTestFunc, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Panics(a.t, f, msgAndArgs...)
 }
 
@@ -828,9 +597,6 @@ func (a *Assertions) Panics(f PanicTestFunc, msgAndArgs ...interface{}) bool {
 //
 //   a.PanicsWithValue("crazy error", func(){ GoCrazy() })
 func (a *Assertions) PanicsWithValue(expected interface{}, f PanicTestFunc, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return PanicsWithValue(a.t, expected, f, msgAndArgs...)
 }
 
@@ -839,9 +605,6 @@ func (a *Assertions) PanicsWithValue(expected interface{}, f PanicTestFunc, msgA
 //
 //   a.PanicsWithValuef("crazy error", func(){ GoCrazy() }, "error message %s", "formatted")
 func (a *Assertions) PanicsWithValuef(expected interface{}, f PanicTestFunc, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return PanicsWithValuef(a.t, expected, f, msg, args...)
 }
 
@@ -849,9 +612,6 @@ func (a *Assertions) PanicsWithValuef(expected interface{}, f PanicTestFunc, msg
 //
 //   a.Panicsf(func(){ GoCrazy() }, "error message %s", "formatted")
 func (a *Assertions) Panicsf(f PanicTestFunc, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Panicsf(a.t, f, msg, args...)
 }
 
@@ -860,9 +620,6 @@ func (a *Assertions) Panicsf(f PanicTestFunc, msg string, args ...interface{}) b
 //  a.Regexp(regexp.MustCompile("start"), "it's starting")
 //  a.Regexp("start...$", "it's not starting")
 func (a *Assertions) Regexp(rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Regexp(a.t, rx, str, msgAndArgs...)
 }
 
@@ -871,9 +628,6 @@ 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")
 func (a *Assertions) Regexpf(rx interface{}, str interface{}, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Regexpf(a.t, rx, str, msg, args...)
 }
 
@@ -882,9 +636,6 @@ func (a *Assertions) Regexpf(rx interface{}, str interface{}, msg string, args .
 //
 //    a.Subset([1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]")
 func (a *Assertions) Subset(list interface{}, subset interface{}, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Subset(a.t, list, subset, msgAndArgs...)
 }
 
@@ -893,9 +644,6 @@ func (a *Assertions) Subset(list interface{}, subset interface{}, msgAndArgs ...
 //
 //    a.Subsetf([1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]", "error message %s", "formatted")
 func (a *Assertions) Subsetf(list interface{}, subset interface{}, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Subsetf(a.t, list, subset, msg, args...)
 }
 
@@ -903,9 +651,6 @@ func (a *Assertions) Subsetf(list interface{}, subset interface{}, msg string, a
 //
 //    a.True(myBool)
 func (a *Assertions) True(value bool, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return True(a.t, value, msgAndArgs...)
 }
 
@@ -913,9 +658,6 @@ func (a *Assertions) True(value bool, msgAndArgs ...interface{}) bool {
 //
 //    a.Truef(myBool, "error message %s", "formatted")
 func (a *Assertions) Truef(value bool, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Truef(a.t, value, msg, args...)
 }
 
@@ -923,9 +665,6 @@ func (a *Assertions) Truef(value bool, msg string, args ...interface{}) bool {
 //
 //   a.WithinDuration(time.Now(), time.Now(), 10*time.Second)
 func (a *Assertions) WithinDuration(expected time.Time, actual time.Time, delta time.Duration, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return WithinDuration(a.t, expected, actual, delta, msgAndArgs...)
 }
 
@@ -933,24 +672,15 @@ func (a *Assertions) WithinDuration(expected time.Time, actual time.Time, delta
 //
 //   a.WithinDurationf(time.Now(), time.Now(), 10*time.Second, "error message %s", "formatted")
 func (a *Assertions) WithinDurationf(expected time.Time, actual time.Time, delta time.Duration, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return WithinDurationf(a.t, expected, actual, delta, msg, args...)
 }
 
 // Zero asserts that i is the zero value for its type.
 func (a *Assertions) Zero(i interface{}, msgAndArgs ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Zero(a.t, i, msgAndArgs...)
 }
 
 // Zerof asserts that i is the zero value for its type.
 func (a *Assertions) Zerof(i interface{}, msg string, args ...interface{}) bool {
-	if h, ok := a.t.(tHelper); ok {
-		h.Helper()
-	}
 	return Zerof(a.t, i, msg, args...)
 }