84 lines
1.3 KiB
Go
84 lines
1.3 KiB
Go
package ui
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import (
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"strings"
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"testing"
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"github.com/google/go-cmp/cmp"
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)
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func TestStdioWrapper(t *testing.T) {
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var tests = []struct {
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inputs [][]byte
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output string
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}{
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{
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inputs: [][]byte{
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[]byte("foo"),
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},
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output: "foo\n",
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},
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{
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inputs: [][]byte{
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[]byte("foo"),
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[]byte("bar"),
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[]byte("\n"),
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[]byte("baz"),
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},
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output: "foobar\n" +
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"baz\n",
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},
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{
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inputs: [][]byte{
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[]byte("foo"),
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[]byte("bar\nbaz\n"),
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[]byte("bump\n"),
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},
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output: "foobar\n" +
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"baz\n" +
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"bump\n",
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},
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{
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inputs: [][]byte{
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[]byte("foo"),
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[]byte("bar\nbaz\n"),
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[]byte("bum"),
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[]byte("p\nx"),
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[]byte("x"),
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[]byte("x"),
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[]byte("z"),
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},
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output: "foobar\n" +
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"baz\n" +
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"bump\n" +
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"xxxz\n",
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},
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}
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for _, test := range tests {
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t.Run("", func(t *testing.T) {
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var output strings.Builder
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w := newLineWriter(func(s string) { output.WriteString(s) })
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for _, data := range test.inputs {
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n, err := w.Write(data)
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if err != nil {
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t.Fatal(err)
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}
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if n != len(data) {
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t.Errorf("invalid length returned by Write, want %d, got %d", len(data), n)
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}
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}
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err := w.Close()
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if err != nil {
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t.Fatal(err)
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}
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if outstr := output.String(); outstr != test.output {
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t.Error(cmp.Diff(test.output, outstr))
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}
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})
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}
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}
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