Tests: Establish root Tests directory, move Userland/Tests there

With the goal of centralizing all tests in the system, this is a
first step to establish a Tests sub-tree. It will contain all of
the unit tests and test harnesses for the various components in the
system.

Tests/LibGfx/BenchmarkGfxPainter.cpp

@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2021, Oleg Sikorskiy <olegsik@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibTest/TestCase.h>
+
+#include <LibGfx/Bitmap.h>
+#include <LibGfx/Painter.h>
+#include <stdio.h>
+
+BENCHMARK_CASE(diagonal_lines)
+{
+    const int run_count = 50;
+    const int bitmap_size = 2000;
+
+    auto bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::BGRx8888, { bitmap_size, bitmap_size });
+    Gfx::Painter painter(*bitmap);
+
+    for (int run = 0; run < run_count; run++) {
+        for (int i = 0; i < bitmap_size; i++) {
+            painter.draw_line({ 0, 0 }, { i, bitmap_size - 1 }, Color::Blue);
+            painter.draw_line({ 0, 0 }, { bitmap_size - 1, i }, Color::Blue);
+        }
+    }
+}
+
+BENCHMARK_CASE(fill)
+{
+    const int run_count = 1000;
+    const int bitmap_size = 2000;
+
+    auto bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::BGRx8888, { bitmap_size, bitmap_size });
+    Gfx::Painter painter(*bitmap);
+
+    for (int run = 0; run < run_count; run++) {
+        painter.fill_rect(bitmap->rect(), Color::Blue);
+    }
+}
+
+BENCHMARK_CASE(fill_with_gradient)
+{
+    const int run_count = 50;
+    const int bitmap_size = 2000;
+
+    auto bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::BGRx8888, { bitmap_size, bitmap_size });
+    Gfx::Painter painter(*bitmap);
+
+    for (int run = 0; run < run_count; run++) {
+        painter.fill_rect_with_gradient(bitmap->rect(), Color::Blue, Color::Red);
+    }
+}

Tests/LibGfx/CMakeLists.txt

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+file(GLOB TEST_SOURCES  CONFIGURE_DEPENDS "*.cpp")
+
+foreach(source ${TEST_SOURCES})
+    serenity_test(${source} LibGfx LIBS LibGUI)
+endforeach()

Tests/LibGfx/TestFontHandling.cpp

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+/*
+ * Copyright (c) 2020, the SerenityOS developers.
+ * Copyright (c) 2021, Brian Gianforcaro <bgianf@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibGfx/BitmapFont.h>
+#include <LibGfx/FontDatabase.h>
+#include <LibTest/TestCase.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+TEST_CASE(test_fontdatabase_get_by_name)
+{
+    const char* name = "Liza 10 400";
+    auto& font_database = Gfx::FontDatabase::the();
+    EXPECT(!font_database.get_by_name(name)->name().is_null());
+}
+
+TEST_CASE(test_fontdatabase_get)
+{
+    auto& font_database = Gfx::FontDatabase::the();
+    EXPECT(!font_database.get("Liza", 10, 400)->name().is_null());
+}
+
+TEST_CASE(test_fontdatabase_for_each_font)
+{
+    auto& font_database = Gfx::FontDatabase::the();
+    font_database.for_each_font([&](const Gfx::Font& font) {
+        EXPECT(!font.name().is_null());
+        EXPECT(!font.qualified_name().is_null());
+        EXPECT(!font.family().is_null());
+        EXPECT(font.glyph_count() > 0);
+    });
+}
+
+TEST_CASE(test_default_font)
+{
+    EXPECT(!Gfx::FontDatabase::default_font().name().is_null());
+}
+
+TEST_CASE(test_default_fixed_width_font)
+{
+    EXPECT(!Gfx::FontDatabase::default_fixed_width_font().name().is_null());
+}
+
+TEST_CASE(test_default_bold_fixed_width_font)
+{
+    EXPECT(!Gfx::FontDatabase::default_bold_fixed_width_font().name().is_null());
+}
+
+TEST_CASE(test_default_bold_font)
+{
+    EXPECT(!Gfx::FontDatabase::default_bold_font().name().is_null());
+}
+
+TEST_CASE(test_clone)
+{
+    u8 glyph_height = 1;
+    u8 glyph_width = 1;
+    auto font = Gfx::BitmapFont::create(glyph_height, glyph_width, true, Gfx::FontTypes::Default);
+
+    auto new_font = font->clone();
+    EXPECT(!new_font->name().is_null());
+    EXPECT(!new_font->qualified_name().is_null());
+    EXPECT(!new_font->family().is_null());
+    EXPECT(new_font->glyph_count() > 0);
+}
+
+TEST_CASE(test_set_name)
+{
+    u8 glyph_height = 1;
+    u8 glyph_width = 1;
+    auto font = Gfx::BitmapFont::create(glyph_height, glyph_width, true, Gfx::FontTypes::Default);
+
+    const char* name = "my newly created font";
+    font->set_name(name);
+
+    EXPECT(!font->name().is_null());
+    EXPECT(font->name().contains(name));
+}
+
+TEST_CASE(test_set_family)
+{
+    u8 glyph_height = 1;
+    u8 glyph_width = 1;
+    auto font = Gfx::BitmapFont::create(glyph_height, glyph_width, true, Gfx::FontTypes::Default);
+
+    const char* family = "my newly created font family";
+    font->set_family(family);
+
+    EXPECT(!font->family().is_null());
+    EXPECT(font->family().contains(family));
+}
+
+TEST_CASE(test_set_glyph_width)
+{
+    u8 glyph_height = 1;
+    u8 glyph_width = 1;
+    auto font = Gfx::BitmapFont::create(glyph_height, glyph_width, true, Gfx::FontTypes::Default);
+
+    size_t ch = 123;
+    font->set_glyph_width(ch, glyph_width);
+
+    EXPECT(font->glyph_width(ch) == glyph_width);
+}
+
+TEST_CASE(test_set_glyph_spacing)
+{
+    u8 glyph_height = 1;
+    u8 glyph_width = 1;
+    auto font = Gfx::BitmapFont::create(glyph_height, glyph_width, true, Gfx::FontTypes::Default);
+
+    u8 glyph_spacing = 8;
+    font->set_glyph_spacing(glyph_spacing);
+
+    EXPECT(font->glyph_spacing() == glyph_spacing);
+}
+
+TEST_CASE(test_set_type)
+{
+    u8 glyph_height = 1;
+    u8 glyph_width = 1;
+    auto font = Gfx::BitmapFont::create(glyph_height, glyph_width, true, Gfx::FontTypes::Default);
+
+    auto type = Gfx::FontTypes::Default;
+    font->set_type(type);
+
+    EXPECT(font->type() == type);
+}
+
+TEST_CASE(test_width)
+{
+    u8 glyph_height = 1;
+    u8 glyph_width = 1;
+    auto font = Gfx::BitmapFont::create(glyph_height, glyph_width, true, Gfx::FontTypes::Default);
+
+    EXPECT(font->width("A") == glyph_width);
+}
+
+TEST_CASE(test_glyph_or_emoji_width)
+{
+    u8 glyph_height = 1;
+    u8 glyph_width = 1;
+    auto font = Gfx::BitmapFont::create(glyph_height, glyph_width, true, Gfx::FontTypes::Default);
+    font->set_type(Gfx::FontTypes::Default);
+
+    EXPECT(font->glyph_or_emoji_width(0));
+}
+
+TEST_CASE(test_load_from_file)
+{
+    auto font = Gfx::BitmapFont::load_from_file("/res/fonts/PebbletonBold14.font");
+    EXPECT(!font->name().is_null());
+}
+
+TEST_CASE(test_write_to_file)
+{
+    u8 glyph_height = 1;
+    u8 glyph_width = 1;
+    auto font = Gfx::BitmapFont::create(glyph_height, glyph_width, true, Gfx::FontTypes::Default);
+
+    char path[] = "/tmp/new.font.XXXXXX";
+    EXPECT(mkstemp(path) != -1);
+    EXPECT(font->write_to_file(path));
+    unlink(path);
+}

Tests/LibGfx/TestImageDecoder.cpp

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+/*
+ * Copyright (c) 2021, the SerenityOS developers.
+ * Copyright (c) 2021, Brian Gianforcaro <bgianf@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <AK/String.h>
+#include <LibGfx/BMPLoader.h>
+#include <LibGfx/GIFLoader.h>
+#include <LibGfx/ICOLoader.h>
+#include <LibGfx/ImageDecoder.h>
+#include <LibGfx/JPGLoader.h>
+#include <LibGfx/PBMLoader.h>
+#include <LibGfx/PGMLoader.h>
+#include <LibGfx/PNGLoader.h>
+#include <LibGfx/PPMLoader.h>
+#include <LibTest/TestCase.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+TEST_CASE(test_bmp)
+{
+    auto image = Gfx::load_bmp("/res/html/misc/bmpsuite_files/rgba32-1.bmp");
+    auto bmp = Gfx::BMPImageDecoderPlugin((const u8*)&image, sizeof(*image));
+    EXPECT(bmp.frame_count());
+
+    EXPECT(!bmp.sniff());
+    EXPECT(!bmp.is_animated());
+    EXPECT(!bmp.loop_count());
+
+    auto frame = bmp.frame(1);
+    EXPECT(frame.duration == 0);
+}
+
+TEST_CASE(test_gif)
+{
+    auto image = Gfx::load_gif("/res/graphics/download-animation.gif");
+    auto gif = Gfx::GIFImageDecoderPlugin((const u8*)&image, sizeof(*image));
+    EXPECT(gif.frame_count());
+
+    EXPECT(!gif.sniff());
+    // FIXME: is_animated() should return true
+    // LibGfx::load_gif() returns a bitmap and lies about is_animated()
+    EXPECT(!gif.is_animated());
+    EXPECT(!gif.loop_count());
+
+    auto frame = gif.frame(1);
+    EXPECT(frame.duration == 0);
+}
+
+TEST_CASE(test_ico)
+{
+    // FIXME: Use an ico file
+    auto image = Gfx::load_ico("/res/graphics/buggie.png");
+    auto ico = Gfx::ICOImageDecoderPlugin((const u8*)&image, sizeof(*image));
+    EXPECT(ico.frame_count());
+
+    EXPECT(!ico.sniff());
+    EXPECT(!ico.is_animated());
+    EXPECT(!ico.loop_count());
+
+    auto frame = ico.frame(1);
+    EXPECT(frame.duration == 0);
+}
+
+TEST_CASE(test_jpg)
+{
+    auto image = Gfx::load_jpg("/res/html/misc/bmpsuite_files/rgb24.jpg");
+    auto jpg = Gfx::JPGImageDecoderPlugin((const u8*)&image, sizeof(*image));
+    EXPECT(jpg.frame_count());
+
+    EXPECT(!jpg.sniff());
+    EXPECT(!jpg.is_animated());
+    EXPECT(!jpg.loop_count());
+
+    auto frame = jpg.frame(1);
+    EXPECT(frame.duration == 0);
+}
+
+TEST_CASE(test_pbm)
+{
+    auto image = Gfx::load_pbm("/res/html/misc/pbmsuite_files/buggie-raw.pbm");
+    auto pbm = Gfx::PBMImageDecoderPlugin((const u8*)&image, sizeof(*image));
+    EXPECT(pbm.frame_count());
+
+    EXPECT(!pbm.sniff());
+    EXPECT(!pbm.is_animated());
+    EXPECT(!pbm.loop_count());
+
+    auto frame = pbm.frame(1);
+    EXPECT(frame.duration == 0);
+}
+
+TEST_CASE(test_pgm)
+{
+    auto image = Gfx::load_pbm("/res/html/misc/pbmsuite_files/buggie-raw.pbm");
+    auto pgm = Gfx::PGMImageDecoderPlugin((const u8*)&image, sizeof(*image));
+    EXPECT(pgm.frame_count());
+
+    EXPECT(!pgm.sniff());
+    EXPECT(!pgm.is_animated());
+    EXPECT(!pgm.loop_count());
+
+    auto frame = pgm.frame(1);
+    EXPECT(frame.duration == 0);
+}
+
+TEST_CASE(test_png)
+{
+    auto image = Gfx::load_png("/res/graphics/buggie.png");
+    auto png = Gfx::PNGImageDecoderPlugin((const u8*)&image, sizeof(*image));
+    EXPECT(png.frame_count());
+
+    EXPECT(!png.sniff());
+    EXPECT(!png.is_animated());
+    EXPECT(!png.loop_count());
+
+    auto frame = png.frame(1);
+    EXPECT(frame.duration == 0);
+}
+
+TEST_CASE(test_ppm)
+{
+    auto image = Gfx::load_ppm("/res/html/misc/ppmsuite_files/buggie-raw.ppm");
+    auto ppm = Gfx::PPMImageDecoderPlugin((const u8*)&image, sizeof(*image));
+    EXPECT(ppm.frame_count());
+
+    EXPECT(!ppm.sniff());
+    EXPECT(!ppm.is_animated());
+    EXPECT(!ppm.loop_count());
+
+    auto frame = ppm.frame(1);
+    EXPECT(frame.duration == 0);
+}