fix dummy collector's name (#7442)

Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/7442

Reviewed By: jay-zhuang

Differential Revision: D24011201

Pulled By: ajkr

fbshipit-source-id: 54f24c29875f7575612a780f15a42cda918d6641

table/table_test.cc

@@ -70,7 +70,7 @@ const std::string kDummyValue(10000, 'o');
 // DummyPropertiesCollector used to test BlockBasedTableProperties
 class DummyPropertiesCollector : public TablePropertiesCollector {
  public:
-  const char* Name() const override { return ""; }
+  const char* Name() const override { return "DummyPropertiesCollector"; }
 
   Status Finish(UserCollectedProperties* /*properties*/) override {
     return Status::OK();
@@ -92,7 +92,9 @@ class DummyPropertiesCollectorFactory1
       TablePropertiesCollectorFactory::Context /*context*/) override {
     return new DummyPropertiesCollector();
   }
-  const char* Name() const override { return "DummyPropertiesCollector1"; }
+  const char* Name() const override {
+    return "DummyPropertiesCollectorFactory1";
+  }
 };
 
 class DummyPropertiesCollectorFactory2
@@ -102,7 +104,9 @@ class DummyPropertiesCollectorFactory2
       TablePropertiesCollectorFactory::Context /*context*/) override {
     return new DummyPropertiesCollector();
   }
-  const char* Name() const override { return "DummyPropertiesCollector2"; }
+  const char* Name() const override {
+    return "DummyPropertiesCollectorFactory2";
+  }
 };
 
 // Return reverse of "key".
@@ -1498,7 +1502,8 @@ TEST_P(BlockBasedTableTest, BlockBasedTableProperties2) {
     ASSERT_EQ("rocksdb.ReverseBytewiseComparator", props.comparator_name);
     ASSERT_EQ("UInt64AddOperator", props.merge_operator_name);
     ASSERT_EQ("rocksdb.Noop", props.prefix_extractor_name);
-    ASSERT_EQ("[DummyPropertiesCollector1,DummyPropertiesCollector2]",
+    ASSERT_EQ(
+        "[DummyPropertiesCollectorFactory1,DummyPropertiesCollectorFactory2]",
         props.property_collectors_names);
     ASSERT_EQ("", props.filter_policy_name);  // no filter policy is used
     c.ResetTableReader();
@@ -2186,7 +2191,8 @@ class CustomFlushBlockPolicy : public FlushBlockPolicyFactory,
   explicit CustomFlushBlockPolicy(std::vector<int> keys_per_block)
       : keys_per_block_(keys_per_block) {}
 
-  const char* Name() const override { return "table_test"; }
+  const char* Name() const override { return "CustomFlushBlockPolicy"; }
+
   FlushBlockPolicy* NewFlushBlockPolicy(const BlockBasedTableOptions&,
                                         const BlockBuilder&) const override {
     return new CustomFlushBlockPolicy(keys_per_block_);