Define adapter interfaces and fake implementations

internal/adapters/whisperx/fake_test.go

@@ -0,0 +1,31 @@
+package whisperx
+
+import (
+	"context"
+	"errors"
+	"testing"
+)
+
+func TestFakeClientCapturesRequestAndReturnsPath(t *testing.T) {
+	fake := &FakeClient{}
+	req := TranscribeRequest{SpeakerID: "alice", AudioPath: "audio/alice.flac", OutputRawTranscriptPath: "transcripts/raw/alice.json"}
+
+	res, err := fake.Transcribe(context.Background(), req)
+	if err != nil {
+		t.Fatalf("Transcribe() error = %v", err)
+	}
+	if len(fake.Requests) != 1 || fake.Requests[0].SpeakerID != "alice" {
+		t.Fatalf("requests = %#v, want one alice request", fake.Requests)
+	}
+	if res.OutputRawTranscriptPath != req.OutputRawTranscriptPath {
+		t.Fatalf("output path = %q, want %q", res.OutputRawTranscriptPath, req.OutputRawTranscriptPath)
+	}
+}
+
+func TestFakeClientError(t *testing.T) {
+	fake := &FakeClient{Err: errors.New("boom")}
+	_, err := fake.Transcribe(context.Background(), TranscribeRequest{})
+	if err == nil {
+		t.Fatal("expected error, got nil")
+	}
+}