github.com/ovsinc/prototool@v1.3.0/internal/diff/diff_test.go (about) 1 // Copyright (c) 2018 Uber Technologies, Inc. 2 // 3 // Permission is hereby granted, free of charge, to any person obtaining a copy 4 // of this software and associated documentation files (the "Software"), to deal 5 // in the Software without restriction, including without limitation the rights 6 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 7 // copies of the Software, and to permit persons to whom the Software is 8 // furnished to do so, subject to the following conditions: 9 // 10 // The above copyright notice and this permission notice shall be included in 11 // all copies or substantial portions of the Software. 12 // 13 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 18 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 19 // THE SOFTWARE. 20 21 // Primarily adapted from https://github.com/golang/go/blob/e86168430f0aab8f971763e4b00c2aae7bec55f0/src/cmd/gofmt/gofmt.go. 22 // Copyright 2009 The Go Authors. All rights reserved. 23 // Use of this source code is governed by a BSD-style 24 // license that can be found in the LICENSE file. 25 26 package diff 27 28 import ( 29 "testing" 30 31 "github.com/stretchr/testify/assert" 32 ) 33 34 func TestDo(t *testing.T) { 35 testDo(t, "", "", nil) 36 testDo(t, "abc", "abc", nil) 37 testDo(t, "abc", "abd", nil, "-abc", "+abd") 38 testDo(t, "abc\nabc", "abc\nabd", nil, "-abc", "+abd") 39 testDo(t, "abc\nabc", "abc\nabc", nil) 40 } 41 42 func testDo( 43 t *testing.T, 44 input string, 45 output string, 46 expectedError error, 47 expectedDiffs ...string, 48 ) { 49 diff, err := Do([]byte(input), []byte(output), "") 50 for _, expectedDiff := range expectedDiffs { 51 assert.Contains(t, string(diff), expectedDiff, "diff does not contain %s", expectedDiff) 52 } 53 assert.Equal(t, expectedError, err) 54 }