test(transcribe): a failed engine's reason is a kind, not its error text (red; review F3)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

internal/adapters/transcribe/ensemble_reason_test.go

@@ -0,0 +1,36 @@
+package transcribe_test
+
+import (
+	"context"
+	"errors"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"git.d-ma.be/mathias/tapir/internal/adapters/transcribe"
+	"git.d-ma.be/mathias/tapir/internal/reconcile"
+)
+
+// When one engine is down the page says so and why; the "why" is a kind, not the
+// engine's error text, which can carry provider output (adversarial review F3).
+
+func TestEnsemble_AFailedEnginesReasonIsAKindNotItsErrorText(t *testing.T) {
+	r := newEnsemble("text", "text", nil, errors.New("kb-whisper said: zebrakaka secret words"), false, &verdictAdj{v: reconcile.VerdictAlt})
+
+	got, err := r.e.Transcribe(context.Background(), "/a.wav")
+
+	require.NoError(t, err)
+	assert.NotContains(t, got.Reconciliation.Reason, "zebrakaka")
+	assert.Contains(t, got.Reconciliation.Reason, "iguana/kb-whisper failed", "which engine failed is still said")
+}
+
+func TestEnsemble_AnHTTPFailureShowsItsStatusCodeAsTheKind(t *testing.T) {
+	r := newEnsemble("text", "text", &transcribe.StatusError{Code: 502, Snippet: "zebrakaka"}, nil, false, &verdictAdj{})
+
+	got, err := r.e.Transcribe(context.Background(), "/a.wav")
+
+	require.NoError(t, err)
+	assert.Contains(t, got.Reconciliation.Reason, "http_502")
+	assert.NotContains(t, got.Reconciliation.Reason, "zebrakaka")
+}