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66 lines
1.7 KiB
66 lines
1.7 KiB
// Copyright 2018 Google Inc. All rights reserved.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package parser
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import (
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"bytes"
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"testing"
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)
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func TestPatchList(t *testing.T) {
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expectOverlap := func(err error) {
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t.Helper()
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if _, ok := err.(PatchOverlapError); !ok {
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t.Error("missing PatchOverlapError")
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}
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}
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expectOk := func(err error) {
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t.Helper()
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if err != nil {
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t.Error(err)
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}
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}
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in := []byte("abcdefghijklmnopqrstuvwxyz")
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patchlist := PatchList{}
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expectOk(patchlist.Add(0, 3, "ABC"))
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expectOk(patchlist.Add(12, 15, "MNO"))
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expectOk(patchlist.Add(24, 26, "Z"))
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expectOk(patchlist.Add(15, 15, "_"))
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expectOverlap(patchlist.Add(0, 3, "x"))
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expectOverlap(patchlist.Add(12, 13, "x"))
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expectOverlap(patchlist.Add(13, 14, "x"))
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expectOverlap(patchlist.Add(14, 15, "x"))
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expectOverlap(patchlist.Add(11, 13, "x"))
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expectOverlap(patchlist.Add(12, 15, "x"))
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expectOverlap(patchlist.Add(11, 15, "x"))
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expectOverlap(patchlist.Add(15, 15, "x"))
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if t.Failed() {
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return
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}
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buf := new(bytes.Buffer)
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patchlist.Apply(bytes.NewReader(in), buf)
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expected := "ABCdefghijklMNO_pqrstuvwxZ"
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got := buf.String()
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if got != expected {
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t.Errorf("expected %q, got %q", expected, got)
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}
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}
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