107 lines
4.3 KiB
Go
107 lines
4.3 KiB
Go
package ckconfig
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import (
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"bytes"
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"context"
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"errors"
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"io"
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"testing"
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commandkit "go.maximumdirect.net/commandkit"
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)
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func TestBufferedReportCancellationBeforeDelivery(t *testing.T) {
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for _, quiet := range []bool{false, true} {
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t.Run(map[bool]string{false: "ordinary", true: "quiet"}[quiet], func(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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prepared := false
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app := newConfigTestApp(t, commandkit.NewCommand(commandkit.CommandSpec[struct{}]{
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Name: "report",
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Run: func(invocation commandkit.Invocation, _ struct{}) commandkit.Outcome {
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return renderPreparedConfigReport(invocation, commandkit.Explanation{Message: "selected context"}, func() (any, error) {
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prepared = true
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cancel()
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return "prepared report", nil
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})
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},
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}))
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args := []string{"report"}
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if quiet {
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args = append(args, "--quiet")
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}
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writes := 0
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got := app.Execute(ctx, args, commandkit.Streams{Out: reportWriteFunc(func(p []byte) (int, error) {
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writes++
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return len(p), nil
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})})
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if !prepared || writes != 0 || got.Status != 1 || !errors.Is(got.Cause, context.Canceled) || got.Explanation.Message != "selected context" {
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t.Fatalf("prepared=%t writes=%d outcome=%#v", prepared, writes, got)
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}
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if got.Presentation.Output.RenderError != nil || got.Presentation.Output.WriteError != nil {
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t.Fatalf("cancellation became a presentation failure: %#v", got.Presentation.Output)
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}
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})
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}
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}
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type reportWriteFunc func([]byte) (int, error)
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func (write reportWriteFunc) Write(p []byte) (int, error) { return write(p) }
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func TestBufferedReportDoesNotRejectCancellationAfterDeliveryStarts(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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app := newConfigTestApp(t, commandkit.NewCommand(commandkit.CommandSpec[struct{}]{
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Name: "report",
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Run: func(invocation commandkit.Invocation, _ struct{}) commandkit.Outcome {
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return renderPreparedConfigReport(invocation, commandkit.Explanation{}, func() (any, error) {
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return "report", nil
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})
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},
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}))
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got := app.Execute(ctx, []string{"report"}, commandkit.Streams{Out: reportWriteFunc(func(p []byte) (int, error) {
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cancel()
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return io.Discard.Write(p)
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})})
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if got.Status != 0 || got.Cause != nil {
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t.Fatalf("post-delivery cancellation changed the operation outcome: %#v", got)
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}
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}
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type effectiveWriterFunc func(io.Writer) error
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func (write effectiveWriterFunc) WriteEffective(w io.Writer) error { return write(w) }
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func TestShowCancellationDuringBufferedPreparation(t *testing.T) {
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renderErr := errors.New("native rendering failed")
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for _, tc := range []struct {
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name string
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renderErr error
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}{{name: "cancellation"}, {name: "cancellation and rendering failure", renderErr: renderErr}} {
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t.Run(tc.name, func(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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acquired, secondWrites := 0, 0
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scope := func(name string, writer EffectiveWriter) Scope[struct{}, struct{}] {
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return Scope[struct{}, struct{}]{Name: name, Operations: []Operation{Show}, Acquire: func(context.Context, Request, struct{}, struct{}) (commandkit.Acquired[View], error) {
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acquired++
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return commandkit.Acquired[View]{Value: View{Effective: writer}}, nil
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}}
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}
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app := newConfigTestApp(t, Command(Suite[struct{}, struct{}]{Scopes: []Scope[struct{}, struct{}]{
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scope("app", effectiveWriterFunc(func(w io.Writer) error { _, _ = io.WriteString(w, "name: app\n"); cancel(); return tc.renderErr })),
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scope("promptkit", effectiveWriterFunc(func(w io.Writer) error { secondWrites++; _, err := io.WriteString(w, "name: promptkit\n"); return err })),
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}}))
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var output bytes.Buffer
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got := app.Execute(ctx, []string{"config", "show", "--scope=all"}, commandkit.Streams{Out: &output, Err: io.Discard})
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if acquired != 2 || secondWrites != 0 || output.Len() != 0 || !errors.Is(got.Cause, context.Canceled) || got.Presentation.Output.WriteError != nil {
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t.Fatalf("acquired=%d second=%d output=%q outcome=%#v", acquired, secondWrites, output.String(), got)
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}
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if tc.renderErr == nil && got.Presentation.Output.RenderError != nil || tc.renderErr != nil && !errors.Is(got.Presentation.Output.RenderError, tc.renderErr) {
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t.Fatalf("render evidence = %#v", got.Presentation.Output)
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}
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})
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}
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}
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