Added unit test for the map wrapper class.

Review URL: http://webrtc-codereview.appspot.com/38001

git-svn-id: http://webrtc.googlecode.com/svn/trunk@71 4adac7df-926f-26a2-2b94-8c16560cd09d

system_wrappers/source/map_unittest.cc

@@ -0,0 +1,229 @@
+/*
+ *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "gtest/gtest.h"
+
+#include "map_wrapper.h"
+
+using ::webrtc::MapWrapper;
+using ::webrtc::MapItem;
+
+const unsigned int kNumberOfElements = 10;
+
+int* ItemPointer(MapItem* item) {
+    if (item == NULL) {
+        return NULL;
+    }
+    return reinterpret_cast<int*>(item->GetItem());
+}
+
+bool DeleteItemContent(MapItem* item) {
+    if(item == NULL) {
+        return false;
+    }
+    int* value_ptr = ItemPointer(item);
+    delete value_ptr;
+    return true;
+}
+
+int ItemValue(MapItem* item) {
+    if (item == NULL) {
+        return -1;
+    }
+    const int* value_ptr = ItemPointer(item);
+    if (value_ptr == 0) {
+        return -1;
+    }
+    return *value_ptr;
+}
+
+void PrintToConsole(const char* message, bool supress) {
+    if (supress) {
+        return;
+    }
+    printf(message);
+}
+
+bool CreateAscendingMap(MapWrapper* ascending_map) {
+    int* insert_value = NULL;
+    for (int i = 0; i < kNumberOfElements; ++i) {
+        insert_value = new int;
+        if (insert_value == NULL) {
+            return false;
+        }
+        *insert_value = i;
+        if (0 != ascending_map->Insert(
+                     i,
+                     reinterpret_cast<void*>(insert_value))) {
+            return false;
+        }
+    }
+    return true;
+}
+
+bool ClearMap(MapWrapper* clear_map) {
+    bool success = true;
+    while (clear_map->Size() != 0) {
+        MapItem* remove_item = clear_map->First();
+        if (remove_item == NULL) {
+            return false;
+        }
+        if (!DeleteItemContent(remove_item)) {
+            success = false;
+        }
+        if (clear_map->Erase(remove_item) != 0) {
+            return false;
+        }
+    }
+    return success;
+}
+
+void PrintMapItem(MapItem* item, bool supress) {
+    const int id = item->GetId();
+    const int value = ItemValue(item);
+    char print_buffer[16];
+    sprintf(print_buffer, "(%3i,%3i) ", id, value);
+    PrintToConsole(print_buffer, supress);
+}
+
+// Succeeds only if all the items were printed.
+bool PrintMap(const MapWrapper& print_map, bool supress) {
+    const int elements_to_print = print_map.Size();
+    int elements_printed = 0;
+    MapItem* item = print_map.First();
+    PrintToConsole("[", supress);
+    while (item != NULL) {
+        PrintMapItem(item, supress);
+        ++elements_printed;
+        item = print_map.Next(item);
+    }
+    PrintToConsole("]\n", supress);
+    return elements_printed == elements_to_print;
+}
+
+// Succeeds only if all the items were printed.
+bool ReversePrintMap(const MapWrapper& print_map, bool supress) {
+    const int elements_to_print = print_map.Size();
+    int elements_printed = 0;
+    MapItem* item = print_map.Last();
+    PrintToConsole("[", supress);
+    while (item != NULL) {
+        PrintMapItem(item, supress);
+        ++elements_printed;
+        item = print_map.Previous(item);
+    }
+    PrintToConsole("]\n", supress);
+    return elements_printed == elements_to_print;
+}
+
+// Returns true if the map items contain the same item.
+bool CompareItems(MapItem* lhs_item, MapItem* rhs_item) {
+    if ((lhs_item == NULL) || (rhs_item == NULL)) {
+        return false;
+    }
+    if (lhs_item->GetId() != rhs_item->GetId()) {
+        return false;
+    }
+    return lhs_item->GetItem() == rhs_item->GetItem();
+}
+
+// Returns true if the map contains the same items.
+bool CompareMaps(const MapWrapper& lhs, const MapWrapper& rhs) {
+    const int map_size = lhs.Size();
+    if (map_size != rhs.Size()) {
+        return false;
+    }
+    int item_count = 0;
+    MapItem* lhs_item = lhs.First();
+    while (lhs_item != NULL) {
+        MapItem* rhs_item = rhs.Find(lhs_item->GetId());
+        if (rhs_item == NULL) {
+            return false;
+        }
+        if (!CompareItems(lhs_item, rhs_item)) {
+            return false;
+        }
+        ++item_count;
+        lhs_item = lhs.Next(lhs_item);
+    }
+    return item_count == map_size;
+} 
+
+class MapWrapperTest : public ::testing::Test {
+protected:
+    virtual void SetUp() {
+        ASSERT_TRUE(CreateAscendingMap(&ascending_map_));
+    }
+
+    virtual void TearDown() {
+        EXPECT_TRUE(ClearMap(&ascending_map_));
+    }
+    MapWrapper ascending_map_;
+};
+
+TEST_F(MapWrapperTest,RemoveTest) {
+    // Erase using int id
+    { // Create local scope to avoid accidental re-use
+        MapItem* item_first = ascending_map_.First();
+        ASSERT_FALSE(item_first == NULL);
+        const int first_value_id = item_first->GetId();
+        const int first_value = ItemValue(item_first);
+        EXPECT_TRUE(first_value == 0);
+        EXPECT_EQ(first_value_id,first_value);
+        EXPECT_FALSE(NULL == ascending_map_.Find(first_value_id));
+        EXPECT_TRUE(DeleteItemContent(item_first));
+        ascending_map_.Erase(first_value_id);
+        EXPECT_TRUE(NULL == ascending_map_.Find(first_value_id));
+        EXPECT_EQ(kNumberOfElements-1,ascending_map_.Size());
+    }
+    
+    // Erase using MapItem* item
+    MapItem* item_last = ascending_map_.Last();
+    ASSERT_FALSE(item_last == NULL);
+    const int last_value_id = item_last->GetId();
+    const int last_value = ItemValue(item_last);
+    EXPECT_TRUE(last_value == kNumberOfElements - 1);    
+    EXPECT_EQ(last_value_id, last_value);
+    EXPECT_FALSE(NULL == ascending_map_.Find(last_value_id));
+    ascending_map_.Erase(last_value_id);
+    EXPECT_TRUE(DeleteItemContent(item_last));
+    EXPECT_TRUE(NULL == ascending_map_.Find(last_value_id));
+    EXPECT_EQ(kNumberOfElements-2,ascending_map_.Size());
+}
+
+TEST_F(MapWrapperTest, PrintTest) {
+    const bool supress = true; // Don't spam the console
+
+    EXPECT_TRUE(PrintMap(ascending_map_, supress));
+    EXPECT_TRUE(ReversePrintMap(ascending_map_, supress));
+}
+
+TEST_F(MapWrapperTest, CopyTest) {
+    MapWrapper compare_map;
+    ASSERT_TRUE(CreateAscendingMap(&compare_map));
+    const int map_size = compare_map.Size();
+    ASSERT_EQ(ascending_map_.Size(), map_size);
+    EXPECT_FALSE(CompareMaps(compare_map,ascending_map_));
+
+    int copy_count = 0;
+    MapItem* ascend_item = ascending_map_.First();
+    while (ascend_item != NULL) {
+        MapItem* compare_item = compare_map.Find(ascend_item->GetId());
+        ASSERT_FALSE(compare_item == NULL);
+        DeleteItemContent(ascend_item);
+        compare_item->SetItem(ascend_item->GetItem());
+        ascend_item = ascending_map_.Next(ascend_item);
+        ++copy_count;
+    }
+    EXPECT_TRUE(CompareMaps(compare_map,ascending_map_));
+    while (compare_map.Erase(compare_map.First()) == 0) {
+    }
+    EXPECT_EQ(map_size, copy_count);
+}

system_wrappers/source/system_wrappers_tests.gyp

@@ -24,6 +24,7 @@
       ],
       'sources': [
         'list_unittest.cc',
+        'map_unittest.cc',
       ],
     },
   ],