Playlist-level retry configuration

cmd/mxl-player/playlist_file_test.go

@@ -91,6 +91,41 @@ func TestDecodePlaylistFileAllowsEmptyPlaylist(t *testing.T) {
 	}
 }
 
+func TestDecodePlaylistFileRetry(t *testing.T) {
+	input := `{
+		"retry": {
+			"max_attempts": 3,
+			"initial_delay": "250ms",
+			"max_delay": "2s"
+		},
+		"entries": []
+	}`
+	got, err := decodePlaylistFile(strings.NewReader(input))
+	if err != nil {
+		t.Fatalf("decodePlaylistFile() error = %v", err)
+	}
+	if got.Retry == nil {
+		t.Fatal("decodePlaylistFile() retry = nil")
+	}
+	want := playback.RetryPolicy{
+		MaxAttempts: 3, InitialDelay: 250 * time.Millisecond, MaxDelay: 2 * time.Second,
+	}
+	if *got.Retry != want {
+		t.Fatalf("retry = %#v, want %#v", *got.Retry, want)
+	}
+}
+
+func TestDecodePlaylistFileRetryDefaults(t *testing.T) {
+	got, err := decodePlaylistFile(strings.NewReader(`{"retry":{},"entries":[]}`))
+	if err != nil {
+		t.Fatalf("decodePlaylistFile() error = %v", err)
+	}
+	if got.Retry == nil || got.Retry.MaxAttempts != 0 ||
+		got.Retry.InitialDelay != initialRetryDelay || got.Retry.MaxDelay != maxRetryDelay {
+		t.Fatalf("retry = %#v", got.Retry)
+	}
+}
+
 func TestDecodePlaylistFileRejectsInvalidInput(t *testing.T) {
 	tests := []struct {
 		name     string
@@ -103,6 +138,10 @@ func TestDecodePlaylistFileRejectsInvalidInput(t *testing.T) {
 		{name: "unknown field", input: `{"unknown": true}`, wantText: "unknown field"},
 		{name: "multiple roots", input: `{"entries": []} {"entries": []}`, wantText: "multiple root values"},
 		{name: "invalid failure policy", input: `{"on_failure":"skip","entries":[]}`, wantErr: playback.ErrPlaylistFailurePolicy},
+		{name: "negative retry attempts", input: `{"retry":{"max_attempts":-1},"entries":[]}`, wantErr: playback.ErrInvalidMaxAttempts},
+		{name: "invalid initial delay", input: `{"retry":{"initial_delay":"soon"},"entries":[]}`, wantText: "retry initial_delay"},
+		{name: "invalid maximum delay", input: `{"retry":{"max_delay":"later"},"entries":[]}`, wantText: "retry max_delay"},
+		{name: "invalid retry range", input: `{"retry":{"initial_delay":"2s","max_delay":"1s"},"entries":[]}`, wantErr: playback.ErrInvalidRetryRange},
 		{
 			name:     "invalid duration",
 			input:    `{"entries":[{"video":{"domain":"/video","uuid":"video"},"duration":"later"}]}`,