145 lines
3.0 KiB
Go
145 lines
3.0 KiB
Go
/*
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Copyright 2018 Google LLC
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package snapshot
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import (
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"testing"
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)
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func Test_CacheKey(t *testing.T) {
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tests := []struct {
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name string
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map1 map[string]string
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map2 map[string]string
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equal bool
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}{
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{
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name: "maps are the same",
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map1: map[string]string{
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"a": "apple",
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"b": "bat",
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"c": "cat",
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"d": "dog",
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"e": "egg",
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},
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map2: map[string]string{
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"c": "cat",
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"d": "dog",
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"b": "bat",
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"a": "apple",
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"e": "egg",
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},
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equal: true,
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},
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{
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name: "maps are different",
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map1: map[string]string{
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"a": "apple",
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"b": "bat",
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"c": "cat",
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},
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map2: map[string]string{
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"c": "",
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"b": "bat",
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"a": "apple",
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},
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equal: false,
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},
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}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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lm1 := LayeredMap{adds: []map[string]string{test.map1}, deletes: []map[string]struct{}{nil, nil}}
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lm2 := LayeredMap{adds: []map[string]string{test.map2}, deletes: []map[string]struct{}{nil, nil}}
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k1, err := lm1.Key()
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if err != nil {
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t.Fatalf("error getting key for map 1: %v", err)
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}
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k2, err := lm2.Key()
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if err != nil {
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t.Fatalf("error getting key for map 2: %v", err)
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}
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if test.equal != (k1 == k2) {
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t.Fatalf("unexpected result: \nExpected\n%s\nActual\n%s\n", k1, k2)
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}
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})
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}
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}
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func Test_FlattenPaths(t *testing.T) {
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layers := []map[string]string{
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{
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"a": "2",
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"b": "3",
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},
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{
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"b": "5",
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"c": "6",
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},
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{
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"a": "8",
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},
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}
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whiteouts := []map[string]struct{}{
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{
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"a": {}, // delete a
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},
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{
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"b": {}, // delete b
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},
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{
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"c": {}, // delete c
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},
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}
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lm := LayeredMap{
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adds: []map[string]string{layers[0]},
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deletes: []map[string]struct{}{whiteouts[0]}}
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paths := lm.GetCurrentPaths()
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assertPath := func(f string, exists bool) {
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_, ok := paths[f]
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if exists && !ok {
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t.Fatalf("expected path '%s' to be present.", f)
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} else if !exists && ok {
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t.Fatalf("expected path '%s' not to be present.", f)
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}
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}
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assertPath("a", false)
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assertPath("b", true)
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lm = LayeredMap{
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adds: []map[string]string{layers[0], layers[1]},
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deletes: []map[string]struct{}{whiteouts[0], whiteouts[1]}}
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paths = lm.GetCurrentPaths()
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assertPath("a", false)
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assertPath("b", false)
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assertPath("c", true)
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lm = LayeredMap{
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adds: []map[string]string{layers[0], layers[1], layers[2]},
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deletes: []map[string]struct{}{whiteouts[0], whiteouts[1], whiteouts[2]}}
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paths = lm.GetCurrentPaths()
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assertPath("a", true)
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assertPath("b", false)
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assertPath("c", false)
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}
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