fix: remove mock tuf client output

pkg/policy/resolver_test.go

@@ -41,7 +41,7 @@ func TestResolvePolicy(t *testing.T) {
 			opts := &policy.Options{}
 			tempDir := test.CreateTempDir(t, "", "tuf-dest")
 			if !tc.DisableTUF {
-				tufClient = tuf.NewMockTufClient(tufPolicyPath, tempDir)
+				tufClient = tuf.NewMockTufClient(tufPolicyPath)
 			}
 			if tc.policyID != "" {
 				opts.PolicyID = tc.policyID

pkg/tuf/mock.go

@@ -10,23 +10,18 @@ import (
 
 type MockTufClient struct {
 	srcPath string
-	dstPath string
 }
 
-func NewMockTufClient(srcPath string, dstPath string) *MockTufClient {
+func NewMockTufClient(srcPath string) *MockTufClient {
 	if srcPath == "" {
 		panic("srcPath must be set")
 	}
-	if dstPath == "" {
-		panic("dstPath must be set")
-	}
 	return &MockTufClient{
 		srcPath: srcPath,
-		dstPath: dstPath,
 	}
 }
 
-func (dc *MockTufClient) DownloadTarget(target string, filePath string) (file *TargetFile, err error) {
+func (dc *MockTufClient) DownloadTarget(target string, _ string) (file *TargetFile, err error) {
 	targetPath := filepath.Join(dc.srcPath, target)
 	src, err := os.Open(targetPath)
 	if err != nil {
@@ -34,32 +29,12 @@ func (dc *MockTufClient) DownloadTarget(target string, filePath string) (file *T
 	}
 	defer src.Close()
 
-	var dstFilePath string
-	if filePath == "" {
-		dstFilePath = filepath.Join(dc.dstPath, filepath.FromSlash(target))
-	} else {
-		dstFilePath = filePath
-	}
-
-	err = os.MkdirAll(filepath.Dir(dstFilePath), os.ModePerm)
-	if err != nil {
-		return nil, err
-	}
-	dst, err := os.Create(dstFilePath)
-	if err != nil {
-		return nil, err
-	}
-	defer dst.Close()
-
-	// reading from tee will read from src and write to dst at the same time
-	tee := io.TeeReader(src, dst)
-
-	b, err := io.ReadAll(tee)
+	b, err := io.ReadAll(src)
 	if err != nil {
 		return nil, err
 	}
 
-	return &TargetFile{ActualFilePath: dstFilePath, TargetURI: targetPath, Data: b, Digest: util.SHA256Hex(b)}, nil
+	return &TargetFile{TargetURI: targetPath, Data: b, Digest: util.SHA256Hex(b)}, nil
 }
 
 type MockVersionChecker struct {