text: /*
  Copyright 2016 The Kubernetes Authors.
  
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at
  
      http://www.apache.org/licenses/LICENSE-2.0
  
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
  */
  
  package diff
  
  import (
  	"testing"
  )
  
  func TestObjectReflectDiff(t *testing.T) {
  	type struct1 struct{ A []int }
  
  	testCases := map[string]struct {
  		a, b interface{}
  		out  string
  	}{
  		"map": {
  			a: map[string]int{},
  			b: map[string]int{},
  		},
  		"detect nil map": {
  			a: map[string]int(nil),
  			b: map[string]int{},
  			out: `
  object:
    a: map[string]int(nil)
    b: map[string]int{}`,
  		},
  		"detect map changes": {
  			a: map[string]int{"test": 1, "other": 2},
  			b: map[string]int{"test": 2, "third": 3},
  			out: `
  object[other]:
    a: 2
    b: <nil>
  object[test]:
    a: 1
    b: 2
  object[third]:
    a: <nil>
    b: 3`,
  		},
  		"nil slice":   {a: struct1{A: nil}, b: struct1{A: nil}},
  		"empty slice": {a: struct1{A: []int{}}, b: struct1{A: []int{}}},
  		"detect slice changes 1": {a: struct1{A: []int{1}}, b: struct1{A: []int{2}}, out: `
  object.A[0]:
    a: 1
    b: 2`,
  		},
  		"detect slice changes 2": {a: struct1{A: []int{}}, b: struct1{A: []int{2}}, out: `
  object.A[0]:
    a: <nil>
    b: 2`,
  		},
  		"detect slice changes 3": {a: struct1{A: []int{1}}, b: struct1{A: []int{}}, out: `
  object.A[0]:
    a: 1
    b: <nil>`,
  		},
  		"detect nil vs empty slices": {a: struct1{A: nil}, b: struct1{A: []int{}}, out: `
  object.A:
    a: []int(nil)
    b: []int{}`,
  		},
  	}
  	for name, test := range testCases {
  		expect := test.out
  		if len(expect) == 0 {
  			expect = "<no diffs>"
  		}
  		if actual := ObjectReflectDiff(test.a, test.b); actual != expect {
  			t.Errorf("%s: unexpected output: %s", name, actual)
  		}
  	}
  }
  
  func TestStringDiff(t *testing.T) {
  	diff := StringDiff("aaabb", "aaacc")
  	expect := "aaa\n\nA: bb\n\nB: cc\n\n"
  	if diff != expect {
  		t.Errorf("diff returned %v", diff)
  	}
  }
  