289 lines
7.1 KiB
Go
289 lines
7.1 KiB
Go
// Copyright 2013 Dario Castañé. All rights reserved.
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package mergo
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import (
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"gopkg.in/yaml.v1"
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"io/ioutil"
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"reflect"
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"testing"
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)
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type simpleTest struct {
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Value int
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}
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type complexTest struct {
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St simpleTest
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sz int
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Id string
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}
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type moreComplextText struct {
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Ct complexTest
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St simpleTest
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Nt simpleTest
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}
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type pointerTest struct {
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C *simpleTest
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}
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type sliceTest struct {
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S []int
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}
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func TestNil(t *testing.T) {
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if err := Merge(nil, nil); err != ErrNilArguments {
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t.Fail()
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}
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}
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func TestDifferentTypes(t *testing.T) {
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a := simpleTest{42}
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b := 42
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if err := Merge(&a, b); err != ErrDifferentArgumentsTypes {
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t.Fail()
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}
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}
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func TestSimpleStruct(t *testing.T) {
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a := simpleTest{}
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b := simpleTest{42}
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if err := Merge(&a, b); err != nil {
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t.FailNow()
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}
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if a.Value != 42 {
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t.Fatalf("b not merged in a properly: a.Value(%d) != b.Value(%d)", a.Value, b.Value)
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}
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if !reflect.DeepEqual(a, b) {
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t.FailNow()
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}
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}
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func TestComplexStruct(t *testing.T) {
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a := complexTest{}
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a.Id = "athing"
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b := complexTest{simpleTest{42}, 1, "bthing"}
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if err := Merge(&a, b); err != nil {
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t.FailNow()
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}
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if a.St.Value != 42 {
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t.Fatalf("b not merged in a properly: a.St.Value(%d) != b.St.Value(%d)", a.St.Value, b.St.Value)
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}
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if a.sz == 1 {
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t.Fatalf("a's private field sz not preserved from merge: a.sz(%d) == b.sz(%d)", a.sz, b.sz)
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}
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if a.Id != b.Id {
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t.Fatalf("a's field Id not merged properly: a.Id(%s) != b.Id(%s)", a.Id, b.Id)
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}
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}
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func TestPointerStruct(t *testing.T) {
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s1 := simpleTest{}
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s2 := simpleTest{19}
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a := pointerTest{&s1}
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b := pointerTest{&s2}
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if err := Merge(&a, b); err != nil {
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t.FailNow()
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}
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if a.C.Value != b.C.Value {
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//t.Fatalf("b not merged in a properly: a.C.Value(%d) != b.C.Value(%d)", a.C.Value, b.C.Value)
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}
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}
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func TestPointerStructNil(t *testing.T) {
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a := pointerTest{nil}
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b := pointerTest{&simpleTest{19}}
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if err := Merge(&a, b); err != nil {
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t.FailNow()
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}
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if a.C.Value != b.C.Value {
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t.Fatalf("b not merged in a properly: a.C.Value(%d) != b.C.Value(%d)", a.C.Value, b.C.Value)
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}
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}
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func TestSliceStruct(t *testing.T) {
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a := sliceTest{}
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b := sliceTest{[]int{1, 2, 3}}
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if err := Merge(&a, b); err != nil {
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t.FailNow()
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}
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if len(b.S) != 3 {
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t.FailNow()
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}
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if len(a.S) != len(b.S) {
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t.Fatalf("b not merged in a properly %d != %d", len(a.S), len(b.S))
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}
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a = sliceTest{[]int{1}}
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b = sliceTest{[]int{1, 2, 3}}
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if err := Merge(&a, b); err != nil {
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t.FailNow()
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}
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if len(b.S) != 3 {
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t.FailNow()
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}
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if len(a.S) != len(b.S) {
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t.Fatalf("b not merged in a properly %d != %d", len(a.S), len(b.S))
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}
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}
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func TestMaps(t *testing.T) {
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m := map[string]simpleTest{
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"a": simpleTest{},
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"b": simpleTest{42},
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}
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n := map[string]simpleTest{
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"a": simpleTest{16},
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"b": simpleTest{},
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"c": simpleTest{12},
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}
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if err := Merge(&m, n); err != nil {
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t.Fatalf(err.Error())
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}
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if len(m) != 3 {
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t.Fatalf(`n not merged in m properly, m must have 3 elements instead of %d`, len(m))
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}
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if m["a"].Value != 0 {
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t.Fatalf(`n merged in m because I solved non-addressable map values TODO: m["a"].Value(%d) != n["a"].Value(%d)`, m["a"].Value, n["a"].Value)
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}
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if m["b"].Value != 42 {
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t.Fatalf(`n wrongly merged in m: m["b"].Value(%d) != n["b"].Value(%d)`, m["b"].Value, n["b"].Value)
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}
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if m["c"].Value != 12 {
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t.Fatalf(`n not merged in m: m["c"].Value(%d) != n["c"].Value(%d)`, m["c"].Value, n["c"].Value)
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}
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}
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func TestYAMLMaps(t *testing.T) {
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thing := loadYAML("testdata/thing.yml")
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license := loadYAML("testdata/license.yml")
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ft := thing["fields"].(map[interface{}]interface{})
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fl := license["fields"].(map[interface{}]interface{})
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expectedLength := len(ft) + len(fl)
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if err := Merge(&license, thing); err != nil {
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t.Fatal(err.Error())
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}
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currentLength := len(license["fields"].(map[interface{}]interface{}))
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if currentLength != expectedLength {
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t.Fatalf(`thing not merged in license properly, license must have %d elements instead of %d`, expectedLength, currentLength)
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}
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fields := license["fields"].(map[interface{}]interface{})
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if _, ok := fields["id"]; !ok {
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t.Fatalf(`thing not merged in license properly, license must have a new id field from thing`)
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}
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}
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func TestTwoPointerValues(t *testing.T) {
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a := &simpleTest{}
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b := &simpleTest{42}
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if err := Merge(a, b); err != nil {
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t.Fatalf(`Boom. You crossed the streams: %s`, err)
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}
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}
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func TestMap(t *testing.T) {
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a := complexTest{}
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a.Id = "athing"
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c := moreComplextText{a, simpleTest{}, simpleTest{}}
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b := map[string]interface{}{
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"ct": map[string]interface{}{
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"st": map[string]interface{}{
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"value": 42,
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},
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"sz": 1,
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"id": "bthing",
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},
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"st": &simpleTest{144}, // Mapping a reference
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"zt": simpleTest{299}, // Mapping a missing field (zt doesn't exist)
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"nt": simpleTest{3},
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}
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if err := Map(&c, b); err != nil {
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t.FailNow()
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}
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m := b["ct"].(map[string]interface{})
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n := m["st"].(map[string]interface{})
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o := b["st"].(*simpleTest)
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p := b["nt"].(simpleTest)
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if c.Ct.St.Value != 42 {
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t.Fatalf("b not merged in a properly: c.Ct.St.Value(%d) != b.Ct.St.Value(%d)", c.Ct.St.Value, n["value"])
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}
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if c.St.Value != 144 {
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t.Fatalf("b not merged in a properly: c.St.Value(%d) != b.St.Value(%d)", c.St.Value, o.Value)
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}
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if c.Nt.Value != 3 {
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t.Fatalf("b not merged in a properly: c.Nt.Value(%d) != b.Nt.Value(%d)", c.St.Value, p.Value)
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}
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if c.Ct.sz == 1 {
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t.Fatalf("a's private field sz not preserved from merge: c.Ct.sz(%d) == b.Ct.sz(%d)", c.Ct.sz, m["sz"])
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}
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if c.Ct.Id != m["id"] {
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t.Fatalf("a's field Id not merged properly: c.Ct.Id(%s) != b.Ct.Id(%s)", c.Ct.Id, m["id"])
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}
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}
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func TestSimpleMap(t *testing.T) {
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a := simpleTest{}
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b := map[string]interface{}{
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"value": 42,
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}
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if err := Map(&a, b); err != nil {
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t.FailNow()
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}
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if a.Value != 42 {
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t.Fatalf("b not merged in a properly: a.Value(%d) != b.Value(%v)", a.Value, b["value"])
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}
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}
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type pointerMapTest struct {
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A int
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hidden int
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B *simpleTest
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}
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func TestBackAndForth(t *testing.T) {
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pt := pointerMapTest{42, 1, &simpleTest{66}}
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m := make(map[string]interface{})
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if err := Map(&m, pt); err != nil {
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t.FailNow()
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}
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var (
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v interface{}
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ok bool
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)
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if v, ok = m["a"]; v.(int) != pt.A || !ok {
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t.Fatalf("pt not merged properly: m[`a`](%d) != pt.A(%d)", v, pt.A)
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}
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if v, ok = m["b"]; !ok {
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t.Fatalf("pt not merged properly: B is missing in m")
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}
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var st *simpleTest
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if st = v.(*simpleTest); st.Value != 66 {
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t.Fatalf("something went wrong while mapping pt on m, B wasn't copied")
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}
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bpt := pointerMapTest{}
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if err := Map(&bpt, m); err != nil {
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t.Fatal(err)
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}
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if bpt.A != pt.A {
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t.Fatalf("pt not merged properly: bpt.A(%d) != pt.A(%d)", bpt.A, pt.A)
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}
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if bpt.hidden == pt.hidden {
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t.Fatalf("pt unexpectedly merged: bpt.hidden(%d) == pt.hidden(%d)", bpt.hidden, pt.hidden)
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}
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if bpt.B.Value != pt.B.Value {
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t.Fatalf("pt not merged properly: bpt.B.Value(%d) != pt.B.Value(%d)", bpt.B.Value, pt.B.Value)
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}
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}
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func loadYAML(path string) (m map[string]interface{}) {
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m = make(map[string]interface{})
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raw, _ := ioutil.ReadFile(path)
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_ = yaml.Unmarshal(raw, &m)
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return
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}
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