+ testDeleteNoSuchBlock(t, factory)
+
+ testStatus(t, factory)
+
+ testString(t, factory)
+
+ testUpdateReadOnly(t, factory)
+
+ testGetConcurrent(t, factory)
+ testPutConcurrent(t, factory)
+
+ testPutFullBlock(t, factory)
+}
+
+// Put a test block, get it and verify content
+// Test should pass for both writable and read-only volumes
+func testGet(t *testing.T, factory TestableVolumeFactory) {
+ v := factory(t)
+ defer v.Teardown()
+
+ v.PutRaw(TestHash, TestBlock)
+
+ buf, err := v.Get(TestHash)
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ bufs.Put(buf)
+
+ if bytes.Compare(buf, TestBlock) != 0 {
+ t.Errorf("expected %s, got %s", string(TestBlock), string(buf))
+ }
+}
+
+// Invoke get on a block that does not exist in volume; should result in error
+// Test should pass for both writable and read-only volumes
+func testGetNoSuchBlock(t *testing.T, factory TestableVolumeFactory) {
+ v := factory(t)
+ defer v.Teardown()
+
+ if _, err := v.Get(TestHash2); err == nil {
+ t.Errorf("Expected error while getting non-existing block %v", TestHash2)
+ }
+}
+
+// Compare() should return os.ErrNotExist if the block does not exist.
+// Otherwise, writing new data causes CompareAndTouch() to generate
+// error logs even though everything is working fine.
+func testCompareNonexistent(t *testing.T, factory TestableVolumeFactory) {
+ v := factory(t)
+ defer v.Teardown()
+
+ err := v.Compare(TestHash, TestBlock)
+ if err != os.ErrNotExist {
+ t.Errorf("Got err %T %q, expected os.ErrNotExist", err, err)
+ }
+}
+
+// Put a test block and compare the locator with same content
+// Test should pass for both writable and read-only volumes
+func testCompareSameContent(t *testing.T, factory TestableVolumeFactory, testHash string, testData []byte) {
+ v := factory(t)
+ defer v.Teardown()
+
+ v.PutRaw(testHash, testData)
+
+ // Compare the block locator with same content
+ err := v.Compare(testHash, testData)
+ if err != nil {
+ t.Errorf("Got err %q, expected nil", err)
+ }
+}
+
+// Test behavior of Compare() when stored data matches expected
+// checksum but differs from new data we need to store. Requires
+// testHash = md5(testDataA).
+//
+// Test should pass for both writable and read-only volumes
+func testCompareWithCollision(t *testing.T, factory TestableVolumeFactory, testHash string, testDataA, testDataB []byte) {
+ v := factory(t)
+ defer v.Teardown()
+
+ v.PutRaw(testHash, testDataA)
+
+ // Compare the block locator with different content; collision
+ err := v.Compare(TestHash, testDataB)
+ if err == nil {
+ t.Errorf("Got err nil, expected error due to collision")
+ }
+}
+
+// Test behavior of Compare() when stored data has become
+// corrupted. Requires testHash = md5(testDataA) != md5(testDataB).
+//
+// Test should pass for both writable and read-only volumes
+func testCompareWithCorruptStoredData(t *testing.T, factory TestableVolumeFactory, testHash string, testDataA, testDataB []byte) {
+ v := factory(t)
+ defer v.Teardown()
+
+ v.PutRaw(TestHash, testDataB)
+
+ err := v.Compare(testHash, testDataA)
+ if err == nil || err == CollisionError {
+ t.Errorf("Got err %+v, expected non-collision error", err)
+ }
+}
+
+// Put a block and put again with same content
+// Test is intended for only writable volumes
+func testPutBlockWithSameContent(t *testing.T, factory TestableVolumeFactory, testHash string, testData []byte) {
+ v := factory(t)
+ defer v.Teardown()
+
+ if v.Writable() == false {
+ return
+ }
+
+ err := v.Put(testHash, testData)
+ if err != nil {
+ t.Errorf("Got err putting block %q: %q, expected nil", TestBlock, err)
+ }
+
+ err = v.Put(testHash, testData)
+ if err != nil {
+ t.Errorf("Got err putting block second time %q: %q, expected nil", TestBlock, err)
+ }
+}
+
+// Put a block and put again with different content
+// Test is intended for only writable volumes
+func testPutBlockWithDifferentContent(t *testing.T, factory TestableVolumeFactory, testHash string, testDataA, testDataB []byte) {
+ v := factory(t)
+ defer v.Teardown()
+
+ if v.Writable() == false {
+ return
+ }
+
+ err := v.Put(testHash, testDataA)
+ if err != nil {
+ t.Errorf("Got err putting block %q: %q, expected nil", testDataA, err)
+ }
+
+ putErr := v.Put(testHash, testDataB)
+ buf, getErr := v.Get(testHash)
+ if putErr == nil {
+ // Put must not return a nil error unless it has
+ // overwritten the existing data.
+ if bytes.Compare(buf, testDataB) != 0 {
+ t.Errorf("Put succeeded but Get returned %+q, expected %+q", buf, testDataB)
+ }
+ } else {
+ // It is permissible for Put to fail, but it must
+ // leave us with either the original data, the new
+ // data, or nothing at all.
+ if getErr == nil && bytes.Compare(buf, testDataA) != 0 && bytes.Compare(buf, testDataB) != 0 {
+ t.Errorf("Put failed but Get returned %+q, which is neither %+q nor %+q", buf, testDataA, testDataB)
+ }
+ }
+ if getErr == nil {
+ bufs.Put(buf)
+ }
+}
+
+// Put and get multiple blocks
+// Test is intended for only writable volumes
+func testPutMultipleBlocks(t *testing.T, factory TestableVolumeFactory) {
+ v := factory(t)
+ defer v.Teardown()
+
+ if v.Writable() == false {
+ return
+ }
+
+ err := v.Put(TestHash, TestBlock)
+ if err != nil {
+ t.Errorf("Got err putting block %q: %q, expected nil", TestBlock, err)
+ }
+
+ err = v.Put(TestHash2, TestBlock2)
+ if err != nil {
+ t.Errorf("Got err putting block %q: %q, expected nil", TestBlock2, err)
+ }
+
+ err = v.Put(TestHash3, TestBlock3)
+ if err != nil {
+ t.Errorf("Got err putting block %q: %q, expected nil", TestBlock3, err)
+ }
+
+ data, err := v.Get(TestHash)
+ if err != nil {
+ t.Error(err)
+ } else {
+ if bytes.Compare(data, TestBlock) != 0 {
+ t.Errorf("Block present, but got %+q, expected %+q", data, TestBlock)
+ }
+ bufs.Put(data)
+ }
+
+ data, err = v.Get(TestHash2)
+ if err != nil {
+ t.Error(err)
+ } else {
+ if bytes.Compare(data, TestBlock2) != 0 {
+ t.Errorf("Block present, but got %+q, expected %+q", data, TestBlock2)
+ }
+ bufs.Put(data)
+ }
+
+ data, err = v.Get(TestHash3)
+ if err != nil {
+ t.Error(err)
+ } else {
+ if bytes.Compare(data, TestBlock3) != 0 {
+ t.Errorf("Block present, but to %+q, expected %+q", data, TestBlock3)
+ }
+ bufs.Put(data)
+ }
+}
+
+// testPutAndTouch
+// Test that when applying PUT to a block that already exists,
+// the block's modification time is updated.
+// Test is intended for only writable volumes
+func testPutAndTouch(t *testing.T, factory TestableVolumeFactory) {
+ v := factory(t)
+ defer v.Teardown()
+
+ if v.Writable() == false {
+ return
+ }
+
+ if err := v.Put(TestHash, TestBlock); err != nil {
+ t.Error(err)
+ }
+
+ // We'll verify { t0 < threshold < t1 }, where t0 is the
+ // existing block's timestamp on disk before Put() and t1 is
+ // its timestamp after Put().
+ threshold := time.Now().Add(-time.Second)
+
+ // Set the stored block's mtime far enough in the past that we
+ // can see the difference between "timestamp didn't change"
+ // and "timestamp granularity is too low".
+ v.TouchWithDate(TestHash, time.Now().Add(-20*time.Second))
+
+ // Make sure v.Mtime() agrees the above Utime really worked.
+ if t0, err := v.Mtime(TestHash); err != nil || t0.IsZero() || !t0.Before(threshold) {
+ t.Errorf("Setting mtime failed: %v, %v", t0, err)
+ }
+
+ // Write the same block again.
+ if err := v.Put(TestHash, TestBlock); err != nil {
+ t.Error(err)
+ }
+
+ // Verify threshold < t1
+ if t1, err := v.Mtime(TestHash); err != nil {
+ t.Error(err)
+ } else if t1.Before(threshold) {
+ t.Errorf("t1 %v should be >= threshold %v after v.Put ", t1, threshold)
+ }