Tests: Move AK tests to Tests/AK

Author: https://github.com/bgianfo
Commit: 67322b0702
Pull-request: https://github.com/SerenityOS/serenity/pull/6891

Tests/AK/TestArray.cpp

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2020, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibTest/TestCase.h>
+
+#include <AK/Array.h>
+
+static constexpr int constexpr_sum(const Span<const int> span)
+{
+    int sum = 0;
+    for (auto value : span)
+        sum += value;
+
+    return sum;
+}
+
+TEST_CASE(compile_time_contructible)
+{
+    constexpr Array<int, 4> array = { 0, 1, 2, 3 };
+    static_assert(array.size() == 4);
+}
+
+TEST_CASE(compile_time_iterable)
+{
+    constexpr Array<int, 8> array = { 0, 1, 2, 3, 4, 5, 6, 7 };
+    static_assert(constexpr_sum(array) == 28);
+}