package seriatim

import (
	"context"
	"errors"
	"testing"
)

func TestFakeRunnerCapturesRequestAndReturnsPath(t *testing.T) {
	fake := &FakeRunner{}
	req := MergeRequest{GeneratedConfigPath: "config/seriatim.yml", OutputMergedTranscriptPath: "transcripts/merged.json"}

	res, err := fake.Run(context.Background(), req)
	if err != nil {
		t.Fatalf("Run() error = %v", err)
	}
	if len(fake.Requests) != 1 || fake.Requests[0].GeneratedConfigPath == "" {
		t.Fatalf("requests = %#v, want captured request", fake.Requests)
	}
	if res.MergedTranscriptPath != req.OutputMergedTranscriptPath {
		t.Fatalf("merged path = %q, want %q", res.MergedTranscriptPath, req.OutputMergedTranscriptPath)
	}
}

func TestFakeRunnerError(t *testing.T) {
	fake := &FakeRunner{Err: errors.New("boom")}
	_, err := fake.Run(context.Background(), MergeRequest{})
	if err == nil {
		t.Fatal("expected error, got nil")
	}
}