Tests: Move AK tests to Tests/AK

Tests/AK/TestSourceGenerator.cpp

@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2020, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibTest/TestCase.h>
+
+#include <AK/SourceGenerator.h>
+
+TEST_CASE(wrap_builder)
+{
+    StringBuilder builder;
+    SourceGenerator generator { builder };
+
+    generator.append("Hello, World!");
+
+    EXPECT_EQ(builder.string_view(), "Hello, World!");
+}
+
+TEST_CASE(generate_c_code)
+{
+    StringBuilder builder;
+    SourceGenerator generator { builder };
+    generator.set("name", "foo");
+
+    generator.append("const char* @name@ (void) { return \"@name@\"; }");
+
+    EXPECT_EQ(generator.as_string_view(), "const char* foo (void) { return \"foo\"; }");
+}
+
+TEST_CASE(scoped)
+{
+    StringBuilder builder;
+    SourceGenerator global_generator { builder };
+
+    global_generator.append("\n");
+
+    global_generator.set("foo", "foo-0");
+    global_generator.set("bar", "bar-0");
+    global_generator.append("@foo@ @bar@\n"); // foo-0 bar-0
+
+    {
+        auto scoped_generator_1 = global_generator.fork();
+        scoped_generator_1.set("bar", "bar-1");
+        global_generator.append("@foo@ @bar@\n"); // foo-0 bar-0
+    }
+
+    global_generator.append("@foo@ @bar@\n"); // foo-0 bar-0
+
+    {
+        auto scoped_generator_2 = global_generator.fork();
+        scoped_generator_2.set("foo", "foo-2");
+        scoped_generator_2.append("@foo@ @bar@\n"); // foo-2 bar-0
+
+        {
+            auto scoped_generator_3 = scoped_generator_2.fork();
+            scoped_generator_3.set("bar", "bar-3");
+            scoped_generator_3.append("@foo@ @bar@\n"); // foo-2 bar-3
+        }
+
+        {
+            auto scoped_generator_4 = global_generator.fork();
+            scoped_generator_4.append("@foo@ @bar@\n"); // foo-0 bar-0
+        }
+
+        scoped_generator_2.append("@foo@ @bar@\n"); // foo-2 bar-0
+    }
+
+    EXPECT_EQ(global_generator.as_string_view(), "\nfoo-0 bar-0\nfoo-0 bar-0\nfoo-0 bar-0\nfoo-2 bar-0\nfoo-2 bar-3\nfoo-0 bar-0\nfoo-2 bar-0\n");
+}