Adding name_unittests for Mojo port and node names.

These are pretty trivial, but possibly worth keeping.

Change-Id: I89866f829699ac597d44cd87e94f948211539174
Reviewed-on: https://chromium-review.googlesource.com/746365Reviewed-by: Ken Rockot <rockot@chromium.org>
Commit-Queue: Chris Bentzel <cbentzel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#513037}

mojo/edk/system/ports/BUILD.gn

@@ -42,6 +42,7 @@ source_set("tests") {
   testonly = true
 
   sources = [
+    "name_unittest.cc",
     "ports_unittest.cc",
   ]
 

mojo/edk/system/ports/name_unittest.cc

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "mojo/edk/system/ports/name.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace mojo {
+namespace edk {
+namespace ports {
+namespace test {
+
+TEST(NameTest, Defaults) {
+  PortName default_port_name;
+  EXPECT_EQ(kInvalidPortName, default_port_name);
+
+  NodeName default_node_name;
+  EXPECT_EQ(kInvalidNodeName, default_node_name);
+}
+
+TEST(NameTest, PortNameChecks) {
+  PortName port_name_a(50, 100);
+  PortName port_name_b(50, 100);
+  PortName port_name_c(100, 50);
+
+  EXPECT_EQ(port_name_a, port_name_b);
+  EXPECT_NE(port_name_a, port_name_c);
+  EXPECT_NE(port_name_b, port_name_c);
+
+  EXPECT_LT(port_name_a, port_name_c);
+  EXPECT_LT(port_name_b, port_name_c);
+  EXPECT_FALSE(port_name_a < port_name_b);
+  EXPECT_FALSE(port_name_b < port_name_a);
+
+  std::hash<PortName> port_hash_fn;
+
+  size_t hash_a = port_hash_fn(port_name_a);
+  size_t hash_b = port_hash_fn(port_name_b);
+  size_t hash_c = port_hash_fn(port_name_c);
+
+  EXPECT_EQ(hash_a, hash_b);
+  EXPECT_NE(hash_a, hash_c);
+  EXPECT_NE(hash_b, hash_c);
+}
+
+TEST(NameTest, NodeNameChecks) {
+  NodeName node_name_a(50, 100);
+  NodeName node_name_b(50, 100);
+  NodeName node_name_c(100, 50);
+
+  EXPECT_EQ(node_name_a, node_name_b);
+  EXPECT_NE(node_name_a, node_name_c);
+  EXPECT_NE(node_name_b, node_name_c);
+
+  EXPECT_LT(node_name_a, node_name_c);
+  EXPECT_LT(node_name_b, node_name_c);
+  EXPECT_FALSE(node_name_a < node_name_b);
+  EXPECT_FALSE(node_name_b < node_name_a);
+
+  std::hash<NodeName> node_hash_fn;
+
+  size_t hash_a = node_hash_fn(node_name_a);
+  size_t hash_b = node_hash_fn(node_name_b);
+  size_t hash_c = node_hash_fn(node_name_c);
+
+  EXPECT_EQ(hash_a, hash_b);
+  EXPECT_NE(hash_a, hash_c);
+  EXPECT_NE(hash_b, hash_c);
+}
+
+}  // namespace test
+}  // namespace ports
+}  // namespace edk
+}  // namespace mojo