Fix integration tests (#2970)

The recent engine changes (#2887) broke some integration tests. This PR fixes them. I also fixed an unrelated linter issue.

pkg/detectors/multi_part_credential_provider_test.go

@@ -25,6 +25,7 @@ func TestMultiPartCredentialProviders(t *testing.T) {
 	}
 
 	for _, tc := range testCases {
+		tc := tc
 		t.Run(tc.name, func(t *testing.T) {
 			t.Parallel()
 

pkg/engine/filesystem_integration_test.go

@@ -61,11 +61,13 @@ func TestFilesystem(t *testing.T) {
 
 	// Run the scan.
 	ctx := context.Background()
-	e, err := Start(ctx,
-		WithDetectors(DefaultDetectors()...),
-		WithVerify(false),
-	)
+	e, err := NewEngine(ctx, &Config{
+		Detectors:     DefaultDetectors(),
+		SourceManager: sources.NewManager(),
+		Verify:        false,
+	})
 	assert.NoError(t, err)
+	e.Start(ctx)
 	err = e.ScanFileSystem(ctx, sources.FilesystemConfig{
 		Paths:            []string{rootDir},
 		ExcludePathsFile: filepath.Join(configDir, "exclude"),

pkg/engine/gitlab_integration_test.go

@@ -16,11 +16,13 @@ import (
 func TestGitLab(t *testing.T) {
 	// Run the scan.
 	ctx := context.Background()
-	e, err := Start(ctx,
-		WithDetectors(DefaultDetectors()...),
-		WithVerify(false),
-	)
+	e, err := NewEngine(ctx, &Config{
+		Detectors:     DefaultDetectors(),
+		SourceManager: sources.NewManager(),
+		Verify:        false,
+	})
 	assert.NoError(t, err)
+	e.Start(ctx)
 
 	secret, err := common.GetTestSecret(ctx)
 	if err != nil {