func (a *Assertions) NotContains(s interface{}, contains interface{}, msgAndArgs ...interface{}) {
	NotContains(a.t, s, contains, msgAndArgs...)
}
NotContains asserts that the specified string, list(array, slice...) or map does NOT contain the
specified substring or element.

a.NotContains("Hello World", "Earth", "But 'Hello World' does NOT contain 'Earth'")
a.NotContains(["Hello", "World"], "Earth", "But ['Hello', 'World'] does NOT contain 'Earth'")
a.NotContains({"Hello": "World"}, "Earth", "But {'Hello': 'World'} does NOT contain 'Earth'")

Returns whether the assertion was successful (true) or not (false).
package require
import (
	assert "github.com/stretchr/testify/assert"
	http "net/http"
	url "net/url"
	time "time"
)
func (a *Assertions) Condition(comp assert.Comparison, msgAndArgs ...interface{}) {
	Condition(a.t, comp, msgAndArgs...)
}
func (a *Assertions) Contains(s interface{}, contains interface{}, msgAndArgs ...interface{}) {
	Contains(a.t, s, contains, msgAndArgs...)
}
func (a *Assertions) Empty(object interface{}, msgAndArgs ...interface{}) {
	Empty(a.t, object, msgAndArgs...)
}
func (a *Assertions) Equal(expected interface{}, actual interface{}, msgAndArgs ...interface{}) {
	Equal(a.t, expected, actual, msgAndArgs...)
}
func (a *Assertions) EqualError(theError error, errString string, msgAndArgs ...interface{}) {
	EqualError(a.t, theError, errString, msgAndArgs...)
}
func (a *Assertions) EqualValues(expected interface{}, actual interface{}, msgAndArgs ...interface{}) {
	EqualValues(a.t, expected, actual, msgAndArgs...)
}
func (a *Assertions) Error(err error, msgAndArgs ...interface{}) {
	Error(a.t, err, msgAndArgs...)
}
func (a *Assertions) Exactly(expected interface{}, actual interface{}, msgAndArgs ...interface{}) {
	Exactly(a.t, expected, actual, msgAndArgs...)
}
func (a *Assertions) Fail(failureMessage string, msgAndArgs ...interface{}) {
	Fail(a.t, failureMessage, msgAndArgs...)
}
func (a *Assertions) FailNow(failureMessage string, msgAndArgs ...interface{}) {
	FailNow(a.t, failureMessage, msgAndArgs...)
}
func (a *Assertions) False(value bool, msgAndArgs ...interface{}) {
	False(a.t, value, msgAndArgs...)
}
func (a *Assertions) HTTPBodyContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}) {
	HTTPBodyContains(a.t, handler, method, url, values, str)
}
func (a *Assertions) HTTPBodyNotContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}) {
	HTTPBodyNotContains(a.t, handler, method, url, values, str)
}
func (a *Assertions) HTTPError(handler http.HandlerFunc, method string, url string, values url.Values) {
	HTTPError(a.t, handler, method, url, values)
}
func (a *Assertions) HTTPRedirect(handler http.HandlerFunc, method string, url string, values url.Values) {
	HTTPRedirect(a.t, handler, method, url, values)
}
func (a *Assertions) HTTPSuccess(handler http.HandlerFunc, method string, url string, values url.Values) {
	HTTPSuccess(a.t, handler, method, url, values)
}
func (a *Assertions) Implements(interfaceObject interface{}, object interface{}, msgAndArgs ...interface{}) {
	Implements(a.t, interfaceObject, object, msgAndArgs...)
}
func (a *Assertions) InDelta(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) {
	InDelta(a.t, expected, actual, delta, msgAndArgs...)
}
func (a *Assertions) InDeltaSlice(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) {
	InDeltaSlice(a.t, expected, actual, delta, msgAndArgs...)
}
func (a *Assertions) InEpsilon(expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) {
	InEpsilon(a.t, expected, actual, epsilon, msgAndArgs...)
}
func (a *Assertions) InEpsilonSlice(expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) {
	InEpsilonSlice(a.t, expected, actual, epsilon, msgAndArgs...)
}
func (a *Assertions) IsType(expectedType interface{}, object interface{}, msgAndArgs ...interface{}) {
	IsType(a.t, expectedType, object, msgAndArgs...)
}
func (a *Assertions) JSONEq(expected string, actual string, msgAndArgs ...interface{}) {
	JSONEq(a.t, expected, actual, msgAndArgs...)
}
func (a *Assertions) Len(object interface{}, length int, msgAndArgs ...interface{}) {
	Len(a.t, object, length, msgAndArgs...)
}
func (a *Assertions) Nil(object interface{}, msgAndArgs ...interface{}) {
	Nil(a.t, object, msgAndArgs...)
}
func (a *Assertions) NoError(err error, msgAndArgs ...interface{}) {
	NoError(a.t, err, msgAndArgs...)
}