mirror of git://gcc.gnu.org/git/gcc.git
62 lines
1.2 KiB
Go
62 lines
1.2 KiB
Go
// Copyright 2015 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 exec
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import (
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"io"
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"testing"
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)
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func TestPrefixSuffixSaver(t *testing.T) {
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tests := []struct {
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N int
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writes []string
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want string
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}{
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{
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N: 2,
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writes: nil,
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want: "",
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},
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{
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N: 2,
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writes: []string{"a"},
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want: "a",
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},
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{
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N: 2,
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writes: []string{"abc", "d"},
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want: "abcd",
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},
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{
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N: 2,
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writes: []string{"abc", "d", "e"},
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want: "ab\n... omitting 1 bytes ...\nde",
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},
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{
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N: 2,
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writes: []string{"ab______________________yz"},
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want: "ab\n... omitting 22 bytes ...\nyz",
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},
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{
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N: 2,
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writes: []string{"ab_______________________y", "z"},
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want: "ab\n... omitting 23 bytes ...\nyz",
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},
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}
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for i, tt := range tests {
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w := &prefixSuffixSaver{N: tt.N}
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for _, s := range tt.writes {
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n, err := io.WriteString(w, s)
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if err != nil || n != len(s) {
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t.Errorf("%d. WriteString(%q) = %v, %v; want %v, %v", i, s, n, err, len(s), nil)
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}
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}
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if got := string(w.Bytes()); got != tt.want {
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t.Errorf("%d. Bytes = %q; want %q", i, got, tt.want)
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}
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}
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}
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