mirror of https://github.com/k3s-io/k3s
73 lines
2.1 KiB
Go
73 lines
2.1 KiB
Go
/*
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Copyright 2015 Google Inc. All rights reserved.
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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 util
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import (
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"hash/adler32"
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"testing"
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)
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type wheel struct {
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radius uint32
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}
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type unicycle struct {
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primaryWheel *wheel
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licencePlateID string
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tags map[string]string
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}
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func TestDeepObjectPointer(t *testing.T) {
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// Arrange
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wheel1 := wheel{radius: 17}
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wheel2 := wheel{radius: 22}
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wheel3 := wheel{radius: 17}
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myUni1 := unicycle{licencePlateID: "blah", primaryWheel: &wheel1, tags: map[string]string{"color": "blue", "name": "john"}}
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myUni2 := unicycle{licencePlateID: "blah", primaryWheel: &wheel2, tags: map[string]string{"color": "blue", "name": "john"}}
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myUni3 := unicycle{licencePlateID: "blah", primaryWheel: &wheel3, tags: map[string]string{"color": "blue", "name": "john"}}
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// Run it more than once to verify determinism of hasher.
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for i := 0; i < 100; i++ {
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hasher1 := adler32.New()
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hasher2 := adler32.New()
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hasher3 := adler32.New()
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// Act
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DeepHashObject(hasher1, myUni1)
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hash1 := hasher1.Sum32()
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DeepHashObject(hasher1, myUni1)
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hash1a := hasher1.Sum32()
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DeepHashObject(hasher2, myUni2)
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hash2 := hasher2.Sum32()
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DeepHashObject(hasher3, myUni3)
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hash3 := hasher3.Sum32()
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// Assert
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if hash1 != hash1a {
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t.Errorf("repeated hash of the same object produced different results: %d vs %d", hash1, hash1a)
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}
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if hash1 == hash2 {
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t.Errorf("hash1 (%d) and hash2(%d) must be different because they have different values for wheel size", hash1, hash2)
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}
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if hash1 != hash3 {
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t.Errorf("hash1 (%d) and hash3(%d) must be the same because although they point to different objects, they have the same values for wheel size", hash1, hash3)
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}
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}
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}
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