package packer import ( "cgl.tideland.biz/asserts" "errors" "testing" ) func TestMultiError_Impl(t *testing.T) { var raw interface{} raw = &MultiError{} if _, ok := raw.(error); !ok { t.Fatal("MultiError must implement error") } } func TestMultiErrorError(t *testing.T) { assert := asserts.NewTestingAsserts(t, true) expected := `2 error(s) occurred: * foo * bar` errors := []error{ errors.New("foo"), errors.New("bar"), } multi := &MultiError{errors} assert.Equal(multi.Error(), expected, "should have proper error") }