Function TestEvalStructFieldPointerExpressions

eval_test.go:578–623

(t *testing.T)

}

func TestEvalStructFieldPointerExpressions(t *testing.T) {
	var data = make(VarMap)

	type structWithPointers struct {
		StringField *string
		IntField    *int
		StructField *structWithPointers
	}

	stringVal := "test"
	intVal := 10
	nestedStringVal := "nested"

	s := structWithPointers{
		StringField: &stringVal,
		IntField:    &intVal,
		StructField: &structWithPointers{
			StringField: &nestedStringVal,
		},
	}
	data.Set("structWithPointerFields", s)
	RunJetTest(t, data, nil, "PointerFields_1", `{{ structWithPointerFields.IntField }}`, "10")
	RunJetTest(t, data, nil, "PointerFields_2", `{{ structWithPointerFields.StructField.IntField }}`, "<nil>")
	RunJetTest(t, data, nil, "PointerFields_3", `{{ structWithPointerFields.StringField }}`, "test")
	RunJetTest(t, data, nil, "PointerFields_4", `{{ structWithPointerFields.StructField.StringField }}`, "nested")

	s2 := structWithPointers{
		StringField: &stringVal,
		IntField:    &intVal,
	}
	data.Set("structWithPointerFields2", s2)
	RunJetTest(t, data, nil, "PointerFields_5", `{{ structWithPointerFields2.IntField }}`, "10")
	RunJetTest(t, data, nil, "PointerFields_6", `{{ structWithPointerFields2.StringField }}`, "test")
	RunJetTest(t, data, nil, "PointerFields_7", `{{ structWithPointerFields2.StructField }}`, "<nil>")

	var set = NewSet(NewOSFileSystemLoader("./testData"), WithSafeWriter(nil))
	tt, err := set.parse("PointerFields_8", `{{ structWithPointerFields2.StructField.StringField }}`, false)
	if err != nil {
		t.Error(err)
	}
	buff := bytes.NewBuffer(nil)
	err = tt.Execute(buff, data, nil)
	if err == nil {
		t.Error("expected evaluating field of nil struct to fail with a runtime error but got nil")
	}
}

func TestEvalBuiltinExpression(t *testing.T) {
	var data = make(VarMap)