assert: add Kind

assert/assertions.go

@@ -1793,3 +1793,15 @@ func buildErrorChainString(err error) string {
 	}
 	return chain
 }
+
+// Kind check if the given object is of the given type
+func Kind(t TestingT, expected reflect.Kind, object interface{}) bool {
+	if h, ok := t.(tHelper); ok {
+		h.Helper()
+	}
+
+	if reflect.TypeOf(object).Kind() == expected {
+		return true
+	}
+	return false
+}

assert/assertions_test.go

@@ -198,10 +198,14 @@ func TestEqual(t *testing.T) {
 		{uint64(123), uint64(123), true, ""},
 		{myType("1"), myType("1"), true, ""},
 		{&struct{}{}, &struct{}{}, true, "pointer equality is based on equality of underlying value"},
+		{time.Date(2020, 3, 1, 12, 23, 14, 0, time.UTC), time.Date(2020, 3, 1, 12, 23, 14, 0, time.UTC), true, ""},
+		{time.Date(2020, 6, 3, 12, 23, 14, 0, time.UTC), time.Date(2020, 6, 3, 12, 23, 14, 0, time.UTC), true, ""},
 
 		// Not expected to be equal
 		{m["bar"], "something", false, ""},
 		{myType("1"), myType("2"), false, ""},
+		{time.Date(2020, 3, 1, 12, 23, 14, 0, time.UTC), time.Date(2020, 5, 1, 12, 23, 14, 0, time.UTC), true, ""},
+		{time.Date(2020, 6, 3, 12, 23, 14, 0, time.UTC), time.Date(2020, 8, 3, 12, 23, 14, 0, time.UTC), true, ""},
 
 		// A case that might be confusing, especially with numeric literals
 		{10, uint(10), false, ""},
@@ -2466,3 +2470,42 @@ func TestErrorAs(t *testing.T) {
 		})
 	}
 }
+
+func TestKind(t *testing.T) {
+	type myType string
+
+	mockT := new(testing.T)
+	a := 12
+
+	cases := []struct {
+		expected reflect.Kind
+		object   interface{}
+		result   bool
+		remark   string
+	}{
+		{reflect.String, "Hello World", true, "1"},
+		{reflect.Int, 123, true, "2"},
+		{reflect.Array, [6]int{2, 3, 5, 7, 11, 13}, true, "3"},
+		{reflect.Func, Kind, true, "4"},
+		{reflect.Float64, 0.0345, true, "5"},
+		{reflect.Map, make(map[string]int), true, "6"},
+		{reflect.Bool, true, true, "7"},
+		{reflect.Ptr, &a, true, "8"},
+
+		// Not expected to be equal
+		{reflect.String, 13, false, "9"},
+		{reflect.Int, [6]int{2, 3, 5, 7, 11, 13}, false, "10"},
+		{reflect.Float64, 12, false, "11"},
+		{reflect.Bool, make(map[string]int), false, "12"},
+	}
+
+	for _, c := range cases {
+		t.Run(fmt.Sprintf("Kind(%#v, %#v)", c.expected, c.object), func(t *testing.T) {
+			res := Kind(mockT, c.expected, c.object)
+
+			if res != c.result {
+				t.Errorf("Kind(%#v, %#v) should return %#v: %s", c.expected, c.object, c.result, c.remark)
+			}
+		})
+	}
+}