AK: Bring back FixedArray<T>

Let's bring this class back, but without the confusing resize() API.
A FixedArray<T> is simply a fixed-size array of T.

The size is provided at run-time, unlike Array<T> where the size is
provided at compile-time.

2 files changed, 30 insertions, 0 deletions

diff --git a/Tests/AK/CMakeLists.txt b/Tests/AK/CMakeLists.txt
index 346165afd0..8459a55706 100644
--- a/Tests/AK/CMakeLists.txt
+++ b/Tests/AK/CMakeLists.txt
@@ -21,6 +21,7 @@ set(AK_TEST_SOURCES
     TestEndian.cpp
     TestEnumBits.cpp
     TestFind.cpp
+    TestFixedArray.cpp
     TestFormat.cpp
     TestGenericLexer.cpp
     TestHashFunctions.cpp
diff --git a/Tests/AK/TestFixedArray.cpp b/Tests/AK/TestFixedArray.cpp
new file mode 100644
index 0000000000..6b33818c62
--- /dev/null
+++ b/Tests/AK/TestFixedArray.cpp
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibTest/TestSuite.h>
+
+#include <AK/FixedArray.h>
+#include <AK/String.h>
+
+TEST_CASE(construct)
+{
+    EXPECT(FixedArray<int>().size() == 0);
+}
+
+TEST_CASE(ints)
+{
+    FixedArray<int> ints(3);
+    ints[0] = 0;
+    ints[1] = 1;
+    ints[2] = 2;
+    EXPECT_EQ(ints[0], 0);
+    EXPECT_EQ(ints[1], 1);
+    EXPECT_EQ(ints[2], 2);
+
+    ints.clear();
+    EXPECT_EQ(ints.size(), 0u);
+}