mirror of https://github.com/docker/cli.git
68 lines
1.3 KiB
Go
68 lines
1.3 KiB
Go
package jsonstream
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import (
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"context"
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"encoding/json"
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"fmt"
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"io"
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"testing"
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"time"
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"github.com/docker/cli/cli/streams"
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"gotest.tools/v3/assert"
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)
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func TestDisplay(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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t.Cleanup(cancel)
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client, server := io.Pipe()
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t.Cleanup(func() {
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assert.NilError(t, server.Close())
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})
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go func() {
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enc := json.NewEncoder(server)
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for i := 0; i < 100; i++ {
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select {
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case <-ctx.Done():
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assert.NilError(t, server.Close(), "failed to close jsonmessage server")
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return
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default:
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err := enc.Encode(JSONMessage{
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Status: "Downloading",
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ID: fmt.Sprintf("id-%d", i),
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TimeNano: time.Now().UnixNano(),
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Time: time.Now().Unix(),
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Progress: &JSONProgress{
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Current: int64(i),
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Total: 100,
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Start: 0,
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},
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})
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if err != nil {
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break
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}
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time.Sleep(100 * time.Millisecond)
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}
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}
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}()
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streamCtx, cancelStream := context.WithCancel(context.Background())
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t.Cleanup(cancelStream)
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done := make(chan error)
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go func() {
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out := streams.NewOut(io.Discard)
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done <- Display(streamCtx, client, out)
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}()
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cancelStream()
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select {
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case <-time.After(time.Second * 3):
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case err := <-done:
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assert.ErrorIs(t, err, context.Canceled)
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}
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}
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