diff --git a/tests.go b/tests.go
index <HASH>..<HASH> 100644
--- a/tests.go
+++ b/tests.go
@@ -221,6 +221,12 @@ func (t *TestSuite) AssertEqual(expected, actual interface{}) {
 	}
 }
 
+func (t *TestSuite) AssertNotEqual(expected, actual interface{}) {
+	if Equal(expected, actual) {
+		panic(fmt.Errorf("(expected) %v == %v (actual)", expected, actual))
+	}
+}
+
 func (t *TestSuite) Assert(exp bool) {
 	t.Assertf(exp, "Assertion failed")
 }
@@ -238,6 +244,13 @@ func (t *TestSuite) AssertContains(s string) {
 	}
 }
 
+// Assert that the response does not contain the given string.
+func (t *TestSuite) AssertNotContains(s string) {
+	if bytes.Contains(t.ResponseBody, []byte(s)) {
+		panic(fmt.Errorf("Assertion failed. Expected response not to contain %s", s))
+	}
+}
+
 // Assert that the response matches the given regular expression.BUG
 func (t *TestSuite) AssertContainsRegex(regex string) {
 	r := regexp.MustCompile(regex)
AssertNotEqual and AssertNotContains have been added