Attempt to make audio and speech discovery more robust.

internal/audio/retry_test.go

@@ -0,0 +1,51 @@
+// Copyright (c) 2026 Storm Dragon
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package audio
+
+import (
+	"context"
+	"errors"
+	"io"
+	"net"
+	"os/exec"
+	"syscall"
+	"testing"
+	"time"
+)
+
+func TestRetryRecoversAndPreservesPermanentErrors(t *testing.T) {
+	attempts := 0
+	err := Retry(context.Background(), func(context.Context) error {
+		attempts++
+		if attempts < 2 {
+			return &net.OpError{Op: "dial", Net: "unix", Err: syscall.ENOENT}
+		}
+		return nil
+	}, Temporary)
+	if err != nil || attempts != 2 {
+		t.Fatal(err, attempts)
+	}
+	for _, problem := range []error{syscall.EACCES, errors.New("invalid configuration"), &exec.Error{Name: "missing-speech-daemon", Err: exec.ErrNotFound}} {
+		attempts = 0
+		err := Retry(context.Background(), func(context.Context) error { attempts++; return problem }, Temporary)
+		if !errors.Is(err, problem) || attempts != 1 {
+			t.Fatal(err, attempts)
+		}
+	}
+}
+
+func TestRetryCancellationStopsBackoffAndDeadlinePreservesCause(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	attempts := 0
+	err := Retry(ctx, func(context.Context) error { attempts++; cancel(); return io.EOF }, Temporary)
+	if !errors.Is(err, context.Canceled) || attempts != 1 {
+		t.Fatal(err, attempts)
+	}
+	ctx, cancel = context.WithTimeout(context.Background(), 20*time.Millisecond)
+	defer cancel()
+	err = Retry(ctx, func(context.Context) error { return io.EOF }, Temporary)
+	if !errors.Is(err, context.DeadlineExceeded) || !errors.Is(err, io.EOF) {
+		t.Fatal(err)
+	}
+}