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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package csv
import (
"bytes"
"errors"
"testing"
)
var writeTests = []struct {
Input [][]string
Output string
UseCRLF bool
}{
{Input: [][]string{{"abc"}}, Output: "abc\n"},
{Input: [][]string{{"abc"}}, Output: "abc\r\n", UseCRLF: true},
{Input: [][]string{{`"abc"`}}, Output: `"""abc"""` + "\n"},
{Input: [][]string{{`a"b`}}, Output: `"a""b"` + "\n"},
{Input: [][]string{{`"a"b"`}}, Output: `"""a""b"""` + "\n"},
{Input: [][]string{{" abc"}}, Output: `" abc"` + "\n"},
{Input: [][]string{{"abc,def"}}, Output: `"abc,def"` + "\n"},
{Input: [][]string{{"abc", "def"}}, Output: "abc,def\n"},
{Input: [][]string{{"abc"}, {"def"}}, Output: "abc\ndef\n"},
{Input: [][]string{{"abc\ndef"}}, Output: "\"abc\ndef\"\n"},
{Input: [][]string{{"abc\ndef"}}, Output: "\"abc\r\ndef\"\r\n", UseCRLF: true},
{Input: [][]string{{"abc\rdef"}}, Output: "\"abcdef\"\r\n", UseCRLF: true},
{Input: [][]string{{"abc\rdef"}}, Output: "\"abc\rdef\"\n", UseCRLF: false},
{Input: [][]string{{""}}, Output: "\n"},
{Input: [][]string{{"", ""}}, Output: ",\n"},
{Input: [][]string{{"", "", ""}}, Output: ",,\n"},
{Input: [][]string{{"", "", "a"}}, Output: ",,a\n"},
{Input: [][]string{{"", "a", ""}}, Output: ",a,\n"},
{Input: [][]string{{"", "a", "a"}}, Output: ",a,a\n"},
{Input: [][]string{{"a", "", ""}}, Output: "a,,\n"},
{Input: [][]string{{"a", "", "a"}}, Output: "a,,a\n"},
{Input: [][]string{{"a", "a", ""}}, Output: "a,a,\n"},
{Input: [][]string{{"a", "a", "a"}}, Output: "a,a,a\n"},
{Input: [][]string{{`\.`}}, Output: "\"\\.\"\n"},
}
func TestWrite(t *testing.T) {
for n, tt := range writeTests {
b := &bytes.Buffer{}
f := NewWriter(b)
f.UseCRLF = tt.UseCRLF
err := f.WriteAll(tt.Input)
if err != nil {
t.Errorf("Unexpected error: %s\n", err)
}
out := b.String()
if out != tt.Output {
t.Errorf("#%d: out=%q want %q", n, out, tt.Output)
}
}
}
type errorWriter struct{}
func (e errorWriter) Write(b []byte) (int, error) {
return 0, errors.New("Test")
}
func TestError(t *testing.T) {
b := &bytes.Buffer{}
f := NewWriter(b)
f.Write([]string{"abc"})
f.Flush()
err := f.Error()
if err != nil {
t.Errorf("Unexpected error: %s\n", err)
}
f = NewWriter(errorWriter{})
f.Write([]string{"abc"})
f.Flush()
err = f.Error()
if err == nil {
t.Error("Error should not be nil")
}
}
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