func createFixtures(t *testing.T) (reporter *ErrorReporter, ctrl *gomock.Controller) {
// reporter acts as a testing.T-like object that we pass to the
// Controller. We use it to test that the mock considered tests
// successful or failed.
reporter = NewErrorReporter(t)
ctrl = gomock.NewController(reporter)
return
}
func TestExpectTrueNil(t *testing.T) {
// Make sure that passing "nil" to EXPECT (thus as a nil interface value),
// will correctly match a nil concrete type.
ctrl := gomock.NewController(t)
defer ctrl.Finish()
mockIndex := mock_user.NewMockIndex(ctrl)
mockIndex.EXPECT().Ptr(nil) // this nil is a nil interface{}
mockIndex.Ptr(nil) // this nil is a nil *int
}
func TestPanicOverridesExpectationChecks(t *testing.T) {
ctrl := gomock.NewController(t)
reporter := NewErrorReporter(t)
reporter.assertFatal(func() {
ctrl.RecordCall(new(Subject), "FooMethod", "1")
defer ctrl.Finish()
reporter.Fatalf("Intentional panic")
})
}
func TestGrabPointer(t *testing.T) {
ctrl := gomock.NewController(t)
defer ctrl.Finish()
mockIndex := mock_user.NewMockIndex(ctrl)
mockIndex.EXPECT().Ptr(gomock.Any()).SetArg(0, 7) // set first argument to 7
i := user.GrabPointer(mockIndex)
if i != 7 {
t.Errorf("Expected 7, got %d", i)
}
}
func TestRemember(t *testing.T) {
ctrl := gomock.NewController(t)
defer ctrl.Finish()
mockIndex := mock_user.NewMockIndex(ctrl)
mockIndex.EXPECT().Put("a", 1) // literals work
mockIndex.EXPECT().Put("b", gomock.Eq(2)) // matchers work too
// NillableRet returns error. Not declaring it should result in a nil return.
mockIndex.EXPECT().NillableRet()
// Calls that returns something assignable to the return type.
boolc := make(chan bool)
// In this case, "chan bool" is assignable to "chan<- bool".
mockIndex.EXPECT().ConcreteRet().Return(boolc)
// In this case, nil is assignable to "chan<- bool".
mockIndex.EXPECT().ConcreteRet().Return(nil)
// Should be able to place expectations on variadic methods.
mockIndex.EXPECT().Ellip("%d", 0, 1, 1, 2, 3) // direct args
tri := []interface{}{1, 3, 6, 10, 15}
mockIndex.EXPECT().Ellip("%d", tri...) // args from slice
mockIndex.EXPECT().EllipOnly(gomock.Eq("arg"))
user.Remember(mockIndex, []string{"a", "b"}, []interface{}{1, 2})
// Check the ConcreteRet calls.
if c := mockIndex.ConcreteRet(); c != boolc {
t.Errorf("ConcreteRet: got %v, want %v", c, boolc)
}
if c := mockIndex.ConcreteRet(); c != nil {
t.Errorf("ConcreteRet: got %v, want nil", c)
}
// Try one with an action.
calledString := ""
mockIndex.EXPECT().Put(gomock.Any(), gomock.Any()).Do(func(key string, _ interface{}) {
calledString = key
})
mockIndex.EXPECT().NillableRet()
user.Remember(mockIndex, []string{"blah"}, []interface{}{7})
if calledString != "blah" {
t.Fatalf(`Uh oh. %q != "blah"`, calledString)
}
// Use Do with a nil arg.
mockIndex.EXPECT().Put("nil-key", gomock.Any()).Do(func(key string, value interface{}) {
if value != nil {
t.Errorf("Put did not pass through nil; got %v", value)
}
})
mockIndex.EXPECT().NillableRet()
user.Remember(mockIndex, []string{"nil-key"}, []interface{}{nil})
}
func TestEmbeddedInterface(t *testing.T) {
ctrl := gomock.NewController(t)
defer ctrl.Finish()
mockEmbed := mock_user.NewMockEmbed(ctrl)
mockEmbed.EXPECT().RegularMethod()
mockEmbed.EXPECT().EmbeddedMethod()
mockEmbed.EXPECT().ForeignEmbeddedMethod()
mockEmbed.RegularMethod()
mockEmbed.EmbeddedMethod()
var emb imp1.ForeignEmbedded = mockEmbed // also does interface check
emb.ForeignEmbeddedMethod()
}
// A more thorough test of notMatcher
func TestNotMatcher(t *testing.T) {
ctrl := gomock.NewController(t)
defer ctrl.Finish()
mockMatcher := mock_matcher.NewMockMatcher(ctrl)
notMatcher := gomock.Not(mockMatcher)
mockMatcher.EXPECT().Matches(4).Return(true)
if match := notMatcher.Matches(4); match {
t.Errorf("notMatcher should not match 4")
}
mockMatcher.EXPECT().Matches(5).Return(false)
if match := notMatcher.Matches(5); !match {
t.Errorf("notMatcher should match 5")
}
}