fix: tests error conditions should be used properly. (#4833)

cmd/erasure-createfile.go

@@ -38,7 +38,8 @@ func (s *ErasureStorage) CreateFile(src io.Reader, volume, path string, buffer [
 		errChans[i] = make(chan error, 1) // create buffered channel to let finished go-routines die early
 	}
 
-	blocks, n := [][]byte{}, len(buffer)
+	var blocks [][]byte
+	var n = len(buffer)
 	for n == len(buffer) {
 		n, err = io.ReadFull(src, buffer)
 		if n == 0 && err == io.EOF {

cmd/erasure-createfile_test.go

@@ -82,10 +82,6 @@ func TestErasureCreateFile(t *testing.T) {
 			setup.Remove()
 			t.Fatalf("Test %d: failed to generate random test data: %v", i, err)
 		}
-		algorithm := test.algorithm
-		if !algorithm.Available() {
-			algorithm = DefaultBitrotAlgorithm
-		}
 		file, err := storage.CreateFile(bytes.NewReader(data[test.offset:]), "testbucket", "object", buffer, test.algorithm, test.dataBlocks+1)
 		if err != nil && !test.shouldFail {
 			t.Errorf("Test %d: should pass but failed with: %v", i, err)

cmd/object-api-putobject_test.go

@@ -229,7 +229,7 @@ func testObjectAPIPutObjectDiskNotFound(obj ObjectLayer, instanceType string, di
 	sha256sum := ""
 	for i, testCase := range testCases {
 		objInfo, actualErr := obj.PutObject(testCase.bucketName, testCase.objName, testCase.intputDataSize, bytes.NewReader(testCase.inputData), testCase.inputMeta, sha256sum)
-		actualErr = errorCause(err)
+		actualErr = errorCause(actualErr)
 		if actualErr != nil && testCase.shouldPass {
 			t.Errorf("Test %d: %s: Expected to pass, but failed with: <ERROR> %s.", i+1, instanceType, actualErr.Error())
 		}

cmd/xl-v1-healing-common_test.go

@@ -350,7 +350,8 @@ func TestDisksWithAllParts(t *testing.T) {
 	// make data with more than one part
 	partCount := 3
 	data := bytes.Repeat([]byte("a"), int(globalPutPartSize)*partCount)
-	xlDisks := obj.(*xlObjects).storageDisks
+	xl := obj.(*xlObjects)
+	xlDisks := xl.storageDisks
 
 	err = obj.MakeBucketWithLocation("bucket", "")
 	if err != nil {
@@ -363,8 +364,8 @@ func TestDisksWithAllParts(t *testing.T) {
 	}
 
 	partsMetadata, errs := readAllXLMetadata(xlDisks, bucket, object)
-	if err != nil {
-		t.Fatalf("Failed to read xl meta data %v", err)
+	if reducedErr := reduceReadQuorumErrs(errs, objectOpIgnoredErrs, xl.readQuorum); reducedErr != nil {
+		t.Fatalf("Failed to read xl meta data %v", reducedErr)
 	}
 
 	diskFailures := make(map[int]string)

cmd/xl-v1-multipart.go

@@ -738,15 +738,14 @@ func (xl xlObjects) PutObjectPart(bucket, object, uploadID string, partID int, s
 	if onlineDisks, err = writeUniqueXLMetadata(onlineDisks, minioMetaTmpBucket, tempXLMetaPath, partsMetadata, xl.writeQuorum); err != nil {
 		return pi, toObjectErr(err, minioMetaTmpBucket, tempXLMetaPath)
 	}
-	var rErr error
-	onlineDisks, rErr = commitXLMetadata(onlineDisks, minioMetaTmpBucket, tempXLMetaPath, minioMetaMultipartBucket, uploadIDPath, xl.writeQuorum)
-	if rErr != nil {
-		return pi, toObjectErr(rErr, minioMetaMultipartBucket, uploadIDPath)
+
+	if _, err = commitXLMetadata(onlineDisks, minioMetaTmpBucket, tempXLMetaPath, minioMetaMultipartBucket, uploadIDPath, xl.writeQuorum); err != nil {
+		return pi, toObjectErr(err, minioMetaMultipartBucket, uploadIDPath)
 	}
 
 	fi, err := xl.statPart(bucket, object, uploadID, partSuffix)
 	if err != nil {
-		return pi, toObjectErr(rErr, minioMetaMultipartBucket, partSuffix)
+		return pi, toObjectErr(err, minioMetaMultipartBucket, partSuffix)
 	}
 
 	// Return success.
@@ -1029,7 +1028,7 @@ func (xl xlObjects) CompleteMultipartUpload(bucket string, object string, upload
 	}
 
 	// Rename the multipart object to final location.
-	if onlineDisks, err = renameObject(onlineDisks, minioMetaMultipartBucket, uploadIDPath, bucket, object, xl.writeQuorum); err != nil {
+	if _, err = renameObject(onlineDisks, minioMetaMultipartBucket, uploadIDPath, bucket, object, xl.writeQuorum); err != nil {
 		return oi, toObjectErr(err, bucket, object)
 	}
 

cmd/xl-v1-object.go

@@ -98,7 +98,7 @@ func (xl xlObjects) CopyObject(srcBucket, srcObject, dstBucket, dstObject string
 			return oi, toObjectErr(err, srcBucket, srcObject)
 		}
 		// Rename atomically `xl.json` from tmp location to destination for each disk.
-		if onlineDisks, err = renameXLMetadata(onlineDisks, minioMetaTmpBucket, tempObj, srcBucket, srcObject, xl.writeQuorum); err != nil {
+		if _, err = renameXLMetadata(onlineDisks, minioMetaTmpBucket, tempObj, srcBucket, srcObject, xl.writeQuorum); err != nil {
 			return oi, toObjectErr(err, srcBucket, srcObject)
 		}
 		return xlMeta.ToObjectInfo(srcBucket, srcObject), nil
@@ -680,8 +680,7 @@ func (xl xlObjects) PutObject(bucket string, object string, size int64, data io.
 	}
 
 	// Rename the successfully written temporary object to final location.
-	onlineDisks, err = renameObject(onlineDisks, minioMetaTmpBucket, tempObj, bucket, object, xl.writeQuorum)
-	if err != nil {
+	if _, err = renameObject(onlineDisks, minioMetaTmpBucket, tempObj, bucket, object, xl.writeQuorum); err != nil {
 		return ObjectInfo{}, toObjectErr(err, bucket, object)
 	}