526 lines
12 KiB
Go
526 lines
12 KiB
Go
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// 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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"io/ioutil"
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"reflect"
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"testing"
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"time"
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"gopkg.in/yaml.v1"
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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 TestKb(t *testing.T) {
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type testStruct struct {
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Name string
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KeyValue map[string]interface{}
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}
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akv := make(map[string]interface{})
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akv["Key1"] = "not value 1"
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akv["Key2"] = "value2"
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a := testStruct{}
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a.Name = "A"
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a.KeyValue = akv
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bkv := make(map[string]interface{})
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bkv["Key1"] = "value1"
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bkv["Key3"] = "value3"
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b := testStruct{}
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b.Name = "B"
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b.KeyValue = bkv
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ekv := make(map[string]interface{})
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ekv["Key1"] = "value1"
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ekv["Key2"] = "value2"
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ekv["Key3"] = "value3"
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expected := testStruct{}
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expected.Name = "B"
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expected.KeyValue = ekv
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Merge(&b, a)
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if !reflect.DeepEqual(b, expected) {
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t.Errorf("Actual: %#v did not match \nExpected: %#v", b, expected)
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}
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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 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 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 merged unexpectedly: a.ID(%s) == b.ID(%s)", a.ID, b.ID)
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}
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}
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func TestComplexStructWithOverwrite(t *testing.T) {
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a := complexTest{simpleTest{1}, 1, "do-not-overwrite-with-empty-value"}
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b := complexTest{simpleTest{42}, 2, ""}
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expect := complexTest{simpleTest{42}, 1, "do-not-overwrite-with-empty-value"}
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if err := MergeWithOverwrite(&a, b); err != nil {
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t.FailNow()
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}
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if !reflect.DeepEqual(a, expect) {
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t.Fatalf("Test failed:\ngot :\n%#v\n\nwant :\n%#v\n\n", a, expect)
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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 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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type embeddingStruct struct {
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embeddedStruct
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}
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type embeddedStruct struct {
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A string
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}
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func TestEmbeddedStruct(t *testing.T) {
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tests := []struct {
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src embeddingStruct
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dst embeddingStruct
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expected embeddingStruct
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}{
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{
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src: embeddingStruct{
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embeddedStruct{"foo"},
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},
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dst: embeddingStruct{
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embeddedStruct{""},
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},
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expected: embeddingStruct{
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embeddedStruct{"foo"},
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},
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},
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{
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src: embeddingStruct{
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embeddedStruct{""},
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},
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dst: embeddingStruct{
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embeddedStruct{"bar"},
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},
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expected: embeddingStruct{
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embeddedStruct{"bar"},
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},
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},
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{
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src: embeddingStruct{
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embeddedStruct{"foo"},
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},
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dst: embeddingStruct{
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embeddedStruct{"bar"},
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},
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expected: embeddingStruct{
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embeddedStruct{"bar"},
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},
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},
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}
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for _, test := range tests {
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err := Merge(&test.dst, test.src)
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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continue
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}
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if !reflect.DeepEqual(test.dst, test.expected) {
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t.Errorf("unexpected output\nexpected:\n%+v\nsaw:\n%+v\n", test.expected, test.dst)
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}
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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 proper way %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(a.S) != 1 {
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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 merged unexpectedly %d != %d", len(a.S), len(b.S))
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}
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}
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func TestMapsWithOverwrite(t *testing.T) {
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m := map[string]simpleTest{
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"a": {}, // overwritten by 16
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"b": {42}, // not overwritten by empty value
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"c": {13}, // overwritten by 12
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"d": {61},
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}
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n := map[string]simpleTest{
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"a": {16},
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"b": {},
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"c": {12},
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"e": {14},
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}
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expect := map[string]simpleTest{
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"a": {16},
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"b": {},
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"c": {12},
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"d": {61},
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"e": {14},
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}
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if err := MergeWithOverwrite(&m, n); err != nil {
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t.Fatalf(err.Error())
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}
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if !reflect.DeepEqual(m, expect) {
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t.Fatalf("Test failed:\ngot :\n%#v\n\nwant :\n%#v\n\n", m, expect)
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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": {},
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"b": {42},
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"c": {13},
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"d": {61},
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}
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n := map[string]simpleTest{
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"a": {16},
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"b": {},
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"c": {12},
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"e": {14},
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}
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expect := map[string]simpleTest{
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"a": {0},
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"b": {42},
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"c": {13},
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"d": {61},
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"e": {14},
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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 !reflect.DeepEqual(m, expect) {
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t.Fatalf("Test failed:\ngot :\n%#v\n\nwant :\n%#v\n\n", m, expect)
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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 != 13 {
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t.Fatalf(`n overwritten 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 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 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 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 merged unexpectedly: 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) {
|
||
|
|
a := simpleTest{}
|
||
|
|
b := map[string]interface{}{
|
||
|
|
"value": 42,
|
||
|
|
}
|
||
|
|
if err := Map(&a, b); err != nil {
|
||
|
|
t.FailNow()
|
||
|
|
}
|
||
|
|
if a.Value != 42 {
|
||
|
|
t.Fatalf("b not merged in properly: a.Value(%d) != b.Value(%v)", a.Value, b["value"])
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
type pointerMapTest struct {
|
||
|
|
A int
|
||
|
|
hidden int
|
||
|
|
B *simpleTest
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestBackAndForth(t *testing.T) {
|
||
|
|
pt := pointerMapTest{42, 1, &simpleTest{66}}
|
||
|
|
m := make(map[string]interface{})
|
||
|
|
if err := Map(&m, pt); err != nil {
|
||
|
|
t.FailNow()
|
||
|
|
}
|
||
|
|
var (
|
||
|
|
v interface{}
|
||
|
|
ok bool
|
||
|
|
)
|
||
|
|
if v, ok = m["a"]; v.(int) != pt.A || !ok {
|
||
|
|
t.Fatalf("pt not merged in properly: m[`a`](%d) != pt.A(%d)", v, pt.A)
|
||
|
|
}
|
||
|
|
if v, ok = m["b"]; !ok {
|
||
|
|
t.Fatalf("pt not merged in properly: B is missing in m")
|
||
|
|
}
|
||
|
|
var st *simpleTest
|
||
|
|
if st = v.(*simpleTest); st.Value != 66 {
|
||
|
|
t.Fatalf("something went wrong while mapping pt on m, B wasn't copied")
|
||
|
|
}
|
||
|
|
bpt := pointerMapTest{}
|
||
|
|
if err := Map(&bpt, m); err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
if bpt.A != pt.A {
|
||
|
|
t.Fatalf("pt not merged in properly: bpt.A(%d) != pt.A(%d)", bpt.A, pt.A)
|
||
|
|
}
|
||
|
|
if bpt.hidden == pt.hidden {
|
||
|
|
t.Fatalf("pt unexpectedly merged: bpt.hidden(%d) == pt.hidden(%d)", bpt.hidden, pt.hidden)
|
||
|
|
}
|
||
|
|
if bpt.B.Value != pt.B.Value {
|
||
|
|
t.Fatalf("pt not merged in properly: bpt.B.Value(%d) != pt.B.Value(%d)", bpt.B.Value, pt.B.Value)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
type structWithTimePointer struct {
|
||
|
|
Birth *time.Time
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestTime(t *testing.T) {
|
||
|
|
now := time.Now()
|
||
|
|
dataStruct := structWithTimePointer{
|
||
|
|
Birth: &now,
|
||
|
|
}
|
||
|
|
dataMap := map[string]interface{}{
|
||
|
|
"Birth": &now,
|
||
|
|
}
|
||
|
|
b := structWithTimePointer{}
|
||
|
|
if err := Merge(&b, dataStruct); err != nil {
|
||
|
|
t.FailNow()
|
||
|
|
}
|
||
|
|
if b.Birth.IsZero() {
|
||
|
|
t.Fatalf("time.Time not merged in properly: b.Birth(%v) != dataStruct['Birth'](%v)", b.Birth, dataStruct.Birth)
|
||
|
|
}
|
||
|
|
if b.Birth != dataStruct.Birth {
|
||
|
|
t.Fatalf("time.Time not merged in properly: b.Birth(%v) != dataStruct['Birth'](%v)", b.Birth, dataStruct.Birth)
|
||
|
|
}
|
||
|
|
b = structWithTimePointer{}
|
||
|
|
if err := Map(&b, dataMap); err != nil {
|
||
|
|
t.FailNow()
|
||
|
|
}
|
||
|
|
if b.Birth.IsZero() {
|
||
|
|
t.Fatalf("time.Time not merged in properly: b.Birth(%v) != dataMap['Birth'](%v)", b.Birth, dataMap["Birth"])
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
type simpleNested struct {
|
||
|
|
A int
|
||
|
|
}
|
||
|
|
|
||
|
|
type structWithNestedPtrValueMap struct {
|
||
|
|
NestedPtrValue map[string]*simpleNested
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestNestedPtrValueInMap(t *testing.T) {
|
||
|
|
src := &structWithNestedPtrValueMap{
|
||
|
|
NestedPtrValue: map[string]*simpleNested{
|
||
|
|
"x": {
|
||
|
|
A: 1,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
}
|
||
|
|
dst := &structWithNestedPtrValueMap{
|
||
|
|
NestedPtrValue: map[string]*simpleNested{
|
||
|
|
"x": {},
|
||
|
|
},
|
||
|
|
}
|
||
|
|
if err := Map(dst, src); err != nil {
|
||
|
|
t.FailNow()
|
||
|
|
}
|
||
|
|
if dst.NestedPtrValue["x"].A == 0 {
|
||
|
|
t.Fatalf("Nested Ptr value not merged in properly: dst.NestedPtrValue[\"x\"].A(%v) != src.NestedPtrValue[\"x\"].A(%v)", dst.NestedPtrValue["x"].A, src.NestedPtrValue["x"].A)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func loadYAML(path string) (m map[string]interface{}) {
|
||
|
|
m = make(map[string]interface{})
|
||
|
|
raw, _ := ioutil.ReadFile(path)
|
||
|
|
_ = yaml.Unmarshal(raw, &m)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
type structWithMap struct {
|
||
|
|
m map[string]structWithUnexportedProperty
|
||
|
|
}
|
||
|
|
|
||
|
|
type structWithUnexportedProperty struct {
|
||
|
|
s string
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestUnexportedProperty(t *testing.T) {
|
||
|
|
a := structWithMap{map[string]structWithUnexportedProperty{
|
||
|
|
"key": structWithUnexportedProperty{"hello"},
|
||
|
|
}}
|
||
|
|
b := structWithMap{map[string]structWithUnexportedProperty{
|
||
|
|
"key": structWithUnexportedProperty{"hi"},
|
||
|
|
}}
|
||
|
|
defer func() {
|
||
|
|
if r := recover(); r != nil {
|
||
|
|
t.Errorf("Should not have panicked")
|
||
|
|
}
|
||
|
|
}()
|
||
|
|
Merge(&a, b)
|
||
|
|
}
|