1 files changed, 68 insertions, 0 deletions
diff --git a/compiler/utils/scoped_hashtable_test.cc b/compiler/utils/scoped_hashtable_test.cc
new file mode 100644
index 0000000000..072da8c5bd
--- /dev/null
+++ b/compiler/utils/scoped_hashtable_test.cc
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "common_test.h"
+#include "scoped_hashtable.h"
+
+using utils::ScopedHashtable;
+
+namespace art {
+
+class Value {
+ public:
+  explicit Value(int v):value_(v) {}
+  int value_;
+};
+
+class ScopedHashtableTest : public CommonTest {
+};
+
+TEST_F(ScopedHashtableTest, Basics) {
+  ScopedHashtable<int, Value*> sht;
+  // Check table is empty when no scope is open.
+  EXPECT_TRUE(NULL == sht.Lookup(1));
+
+  // Check table is empty when scope open.
+  sht.OpenScope();
+  EXPECT_TRUE(NULL == sht.Lookup(1));
+  // Check table is empty after closing scope.
+  EXPECT_EQ(sht.CloseScope(), true);
+  // Check closing scope on empty table is no-op.
+  EXPECT_EQ(sht.CloseScope(), false);
+  // Check that find in current scope works.
+  sht.OpenScope();
+  sht.Add(1, new Value(1));
+  EXPECT_EQ(sht.Lookup(1)->value_, 1);
+  // Check that updating values in current scope works.
+  sht.Add(1, new Value(2));
+  EXPECT_EQ(sht.Lookup(1)->value_, 2);
+  // Check that find works in previous scope.
+  sht.OpenScope();
+  EXPECT_EQ(sht.Lookup(1)->value_, 2);
+  // Check that shadowing scopes works.
+  sht.Add(1, new Value(3));
+  EXPECT_EQ(sht.Lookup(1)->value_, 3);
+  // Check that having multiple keys work correctly.
+  sht.Add(2, new Value(4));
+  EXPECT_EQ(sht.Lookup(1)->value_, 3);
+  EXPECT_EQ(sht.Lookup(2)->value_, 4);
+  // Check that scope removal works corectly.
+  sht.CloseScope();
+  EXPECT_EQ(sht.Lookup(1)->value_, 2);
+  EXPECT_TRUE(NULL == sht.Lookup(2));
+}
+
+} // end namespace art