Tests: Move AK tests to Tests/AK

Tests/AK/TestMACAddress.cpp

@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2020, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibTest/TestCase.h>
+
+#include <AK/MACAddress.h>
+#include <AK/Types.h>
+
+TEST_CASE(should_default_construct)
+{
+    constexpr MACAddress sut {};
+    static_assert(sut.is_zero());
+    EXPECT(sut.is_zero());
+}
+
+TEST_CASE(should_braces_construct)
+{
+    constexpr MACAddress sut { 1, 2, 3, 4, 5, 6 };
+    static_assert(!sut.is_zero());
+    EXPECT(!sut.is_zero());
+}
+
+TEST_CASE(should_construct_from_6_octets)
+{
+    constexpr MACAddress sut(1, 2, 3, 4, 5, 6);
+    static_assert(!sut.is_zero());
+    EXPECT(!sut.is_zero());
+}
+
+TEST_CASE(should_provide_read_access_to_octet_by_index)
+{
+    constexpr auto is_all_expected = [](auto& sut) {
+        for (auto i = 0u; i < sizeof(MACAddress); ++i) {
+            if (sut[i] != i + 1) {
+                return false;
+            }
+        }
+        return true;
+    };
+
+    constexpr MACAddress sut(1, 2, 3, 4, 5, 6);
+
+    static_assert(is_all_expected(sut));
+
+    for (auto i = 0u; i < sizeof(MACAddress); ++i) {
+        EXPECT_EQ(i + 1, sut[i]);
+    }
+}
+
+TEST_CASE(should_provide_write_access_to_octet_by_index)
+{
+    constexpr auto sut = [] {
+        MACAddress m {};
+        for (auto i = 0u; i < sizeof(MACAddress); ++i) {
+            m[i] = i + 1;
+        }
+        return m;
+    }();
+
+    constexpr MACAddress expected(1, 2, 3, 4, 5, 6);
+
+    static_assert(expected == sut);
+}
+
+TEST_CASE(should_equality_compare)
+{
+    constexpr MACAddress a(1, 2, 3, 4, 5, 6);
+    constexpr MACAddress b(1, 2, 3, 42, 5, 6);
+
+    static_assert(a == a);
+    static_assert(a != b);
+
+    EXPECT(a == a);
+    EXPECT(a != b);
+}
+
+TEST_CASE(should_string_format)
+{
+    MACAddress sut(1, 2, 3, 4, 5, 6);
+    EXPECT_EQ("01:02:03:04:05:06", sut.to_string());
+}