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|
package termstatus
import (
"context"
"strings"
"testing"
"github.com/google/go-cmp/cmp"
rtest "github.com/restic/restic/internal/test"
"golang.org/x/sync/errgroup"
)
func TestStdioWrapper(t *testing.T) {
var tests = []struct {
inputs [][]byte
output string
}{
{
inputs: [][]byte{
[]byte("foo"),
},
output: "foo\n",
},
{
inputs: [][]byte{
[]byte("foo"),
[]byte("bar"),
[]byte("\n"),
[]byte("baz"),
},
output: "foobar\n" +
"baz\n",
},
{
inputs: [][]byte{
[]byte("foo"),
[]byte("bar\nbaz\n"),
[]byte("bump\n"),
},
output: "foobar\n" +
"baz\n" +
"bump\n",
},
{
inputs: [][]byte{
[]byte("foo"),
[]byte("bar\nbaz\n"),
[]byte("bum"),
[]byte("p\nx"),
[]byte("x"),
[]byte("x"),
[]byte("z"),
},
output: "foobar\n" +
"baz\n" +
"bump\n" +
"xxxz\n",
},
}
for _, test := range tests {
t.Run("", func(t *testing.T) {
var output strings.Builder
w := newLineWriter(func(s string) { output.WriteString(s) })
for _, data := range test.inputs {
n, err := w.Write(data)
if err != nil {
t.Fatal(err)
}
if n != len(data) {
t.Errorf("invalid length returned by Write, want %d, got %d", len(data), n)
}
}
err := w.Close()
if err != nil {
t.Fatal(err)
}
if outstr := output.String(); outstr != test.output {
t.Error(cmp.Diff(test.output, outstr))
}
})
}
}
func TestStdioWrapperConcurrentWrites(t *testing.T) {
// tests for race conditions when run with `go test -race ./internal/ui/termstatus`
w := newLineWriter(func(_ string) {})
wg, _ := errgroup.WithContext(context.TODO())
for range 5 {
wg.Go(func() error {
_, err := w.Write([]byte("test\n"))
return err
})
}
rtest.OK(t, wg.Wait())
rtest.OK(t, w.Close())
}
|
