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b184d1ccfc
This also means we don't need the J2 becasue it is implied by len(Content) Change-Id: I04e2cbaa3e1faa1e3add22ec2d478821b9062419 Reviewed-on: https://go-review.googlesource.com/c/tools/+/170878 Run-TryBot: Ian Cottrell <iancottrell@google.com> Reviewed-by: Rebecca Stambler <rstambler@golang.org>
58 lines
1.4 KiB
Go
58 lines
1.4 KiB
Go
// Copyright 2019 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 diff
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import (
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"reflect"
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"testing"
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)
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func TestDiff(t *testing.T) {
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for _, tt := range []struct {
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a, b []string
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lines []*Op
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operations []*Op
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}{
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{
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a: []string{"A", "B", "C", "A", "B", "B", "A"},
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b: []string{"C", "B", "A", "B", "A", "C"},
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operations: []*Op{
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&Op{Kind: Delete, I1: 0, I2: 1, J1: 0},
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&Op{Kind: Delete, I1: 1, I2: 2, J1: 0},
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&Op{Kind: Insert, Content: []string{"B"}, I1: 3, I2: 3, J1: 1},
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&Op{Kind: Delete, I1: 5, I2: 6, J1: 4},
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&Op{Kind: Insert, Content: []string{"C"}, I1: 7, I2: 7, J1: 5},
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},
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},
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{
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a: []string{"A", "B"},
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b: []string{"A", "C", ""},
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operations: []*Op{
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&Op{Kind: Delete, I1: 1, I2: 2, J1: 1},
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&Op{Kind: Insert, Content: []string{"C"}, I1: 2, I2: 2, J1: 1},
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&Op{Kind: Insert, Content: []string{""}, I1: 2, I2: 2, J1: 2},
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},
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},
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} {
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ops := Operations(tt.a, tt.b)
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if len(ops) != len(tt.operations) {
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t.Fatalf("expected %v operations, got %v", len(tt.operations), len(ops))
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}
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for i, got := range ops {
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want := tt.operations[i]
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if !reflect.DeepEqual(want, got) {
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t.Errorf("expected %v, got %v", want, got)
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}
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}
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b := ApplyEdits(tt.a, tt.operations)
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for i, want := range tt.b {
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got := b[i]
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if got != want {
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t.Errorf("expected %v got %v", want, got)
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}
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}
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}
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}
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