Index: ash/shell_unittest.cc |
diff --git a/ash/shell_unittest.cc b/ash/shell_unittest.cc |
index fe929cb67bebf1d3a8ca223a1d8697339b1d31fa..19ed1cad0d26e768ebc9f94c10121fcc64e9f15f 100644 |
--- a/ash/shell_unittest.cc |
+++ b/ash/shell_unittest.cc |
@@ -56,6 +56,11 @@ aura::Window* GetAlwaysOnTopContainer() { |
// Expect ALL the containers! |
void ExpectAllContainers() { |
+ // Validate no duplicate container IDs. |
+ std::set<int32_t> container_ids; |
+ for (size_t i = 0; i < kAllShellContainerIdsSize; ++i) |
+ EXPECT_TRUE(container_ids.insert(kAllShellContainerIds[i]).second); |
+ |
aura::Window* root_window = Shell::GetPrimaryRootWindow(); |
EXPECT_TRUE( |
Shell::GetContainer(root_window, kShellWindowId_WallpaperContainer)); |