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-rw-r--r--db/write_batch_test.cc120
1 files changed, 120 insertions, 0 deletions
diff --git a/db/write_batch_test.cc b/db/write_batch_test.cc
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+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "leveldb/db.h"
+
+#include "db/memtable.h"
+#include "db/write_batch_internal.h"
+#include "leveldb/env.h"
+#include "util/logging.h"
+#include "util/testharness.h"
+
+namespace leveldb {
+
+static std::string PrintContents(WriteBatch* b) {
+ InternalKeyComparator cmp(BytewiseComparator());
+ MemTable* mem = new MemTable(cmp);
+ mem->Ref();
+ std::string state;
+ Status s = WriteBatchInternal::InsertInto(b, mem);
+ int count = 0;
+ Iterator* iter = mem->NewIterator();
+ for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
+ ParsedInternalKey ikey;
+ ASSERT_TRUE(ParseInternalKey(iter->key(), &ikey));
+ switch (ikey.type) {
+ case kTypeValue:
+ state.append("Put(");
+ state.append(ikey.user_key.ToString());
+ state.append(", ");
+ state.append(iter->value().ToString());
+ state.append(")");
+ count++;
+ break;
+ case kTypeDeletion:
+ state.append("Delete(");
+ state.append(ikey.user_key.ToString());
+ state.append(")");
+ count++;
+ break;
+ }
+ state.append("@");
+ state.append(NumberToString(ikey.sequence));
+ }
+ delete iter;
+ if (!s.ok()) {
+ state.append("ParseError()");
+ } else if (count != WriteBatchInternal::Count(b)) {
+ state.append("CountMismatch()");
+ }
+ mem->Unref();
+ return state;
+}
+
+class WriteBatchTest { };
+
+TEST(WriteBatchTest, Empty) {
+ WriteBatch batch;
+ ASSERT_EQ("", PrintContents(&batch));
+ ASSERT_EQ(0, WriteBatchInternal::Count(&batch));
+}
+
+TEST(WriteBatchTest, Multiple) {
+ WriteBatch batch;
+ batch.Put(Slice("foo"), Slice("bar"));
+ batch.Delete(Slice("box"));
+ batch.Put(Slice("baz"), Slice("boo"));
+ WriteBatchInternal::SetSequence(&batch, 100);
+ ASSERT_EQ(100, WriteBatchInternal::Sequence(&batch));
+ ASSERT_EQ(3, WriteBatchInternal::Count(&batch));
+ ASSERT_EQ("Put(baz, boo)@102"
+ "Delete(box)@101"
+ "Put(foo, bar)@100",
+ PrintContents(&batch));
+}
+
+TEST(WriteBatchTest, Corruption) {
+ WriteBatch batch;
+ batch.Put(Slice("foo"), Slice("bar"));
+ batch.Delete(Slice("box"));
+ WriteBatchInternal::SetSequence(&batch, 200);
+ Slice contents = WriteBatchInternal::Contents(&batch);
+ WriteBatchInternal::SetContents(&batch,
+ Slice(contents.data(),contents.size()-1));
+ ASSERT_EQ("Put(foo, bar)@200"
+ "ParseError()",
+ PrintContents(&batch));
+}
+
+TEST(WriteBatchTest, Append) {
+ WriteBatch b1, b2;
+ WriteBatchInternal::SetSequence(&b1, 200);
+ WriteBatchInternal::SetSequence(&b2, 300);
+ WriteBatchInternal::Append(&b1, &b2);
+ ASSERT_EQ("",
+ PrintContents(&b1));
+ b2.Put("a", "va");
+ WriteBatchInternal::Append(&b1, &b2);
+ ASSERT_EQ("Put(a, va)@200",
+ PrintContents(&b1));
+ b2.Clear();
+ b2.Put("b", "vb");
+ WriteBatchInternal::Append(&b1, &b2);
+ ASSERT_EQ("Put(a, va)@200"
+ "Put(b, vb)@201",
+ PrintContents(&b1));
+ b2.Delete("foo");
+ WriteBatchInternal::Append(&b1, &b2);
+ ASSERT_EQ("Put(a, va)@200"
+ "Put(b, vb)@202"
+ "Put(b, vb)@201"
+ "Delete(foo)@203",
+ PrintContents(&b1));
+}
+
+} // namespace leveldb
+
+int main(int argc, char** argv) {
+ return leveldb::test::RunAllTests();
+}