Add test for ImageImporter

test/tests/CMakeLists.txt

@@ -147,6 +147,12 @@ add_executable(test_localisation ${STRING_TEST_SOURCES})
 target_link_libraries(test_localisation ${GTEST_LIBRARIES} test-common ${LDL} z)
 add_test(NAME localisation COMMAND test_localisation)
 
+# ImageImporter tests
+add_executable(test_imageimporter "${CMAKE_CURRENT_LIST_DIR}/ImageImporterTests.cpp"
+                                  "${CMAKE_CURRENT_LIST_DIR}/TestData.cpp")
+target_link_libraries(test_imageimporter ${GTEST_LIBRARIES} libopenrct2)
+add_test(NAME ImageImporter COMMAND test_imageimporter)
+
 # Ride ratings test
 set(RIDE_RATINGS_TEST_SOURCES "${CMAKE_CURRENT_LIST_DIR}/RideRatings.cpp"
                               "${CMAKE_CURRENT_LIST_DIR}/TestData.cpp")

test/tests/ImageImporterTests.cpp

@@ -0,0 +1,48 @@
+#include <string_view>
+#include <openrct2/core/Path.hpp>
+#include <openrct2/drawing/ImageImporter.h>
+#include <gtest/gtest.h>
+#include "TestData.h"
+
+using namespace OpenRCT2::Drawing;
+
+class ImageImporterTests : public testing::Test
+{
+public:
+    static std::string GetImagePath(const std::string_view& name)
+    {
+        return Path::Combine(TestData::GetBasePath(), "images", name.data());
+    }
+
+    static uint32 GetHash(void * buffer, size_t bufferLength)
+    {
+        uint32 hash = 27;
+        for (size_t i = 0; i < bufferLength; i++)
+        {
+            hash = (13 * hash) + ((uint8 *)buffer)[i];
+        }
+        return hash;
+    }
+};
+
+TEST_F(ImageImporterTests, Import_Logo)
+{
+    auto logoPath = GetImagePath("logo.png");
+
+    ImageImporter importer;
+    auto image = Imaging::ReadFromFile(logoPath, IMAGE_FORMAT::PNG_32);
+    auto result = importer.Import(image, 3, 5, ImageImporter::IMPORT_FLAGS::RLE);
+
+    ASSERT_EQ(result.Buffer, result.Element.offset);
+    ASSERT_EQ(128, result.Element.width);
+    ASSERT_EQ(128, result.Element.height);
+    ASSERT_EQ(3, result.Element.x_offset);
+    ASSERT_EQ(5, result.Element.y_offset);
+    ASSERT_EQ(0, result.Element.zoomed_offset);
+
+    // Check to ensure RLE data doesn't change unexpectedly.
+    // Update expected hash if change is expected.
+    ASSERT_NE(nullptr, result.Buffer);
+    auto hash = GetHash(result.Buffer, result.BufferLength);
+    ASSERT_EQ(0xCEF27C7D, hash);
+}

test/tests/tests.vcxproj

@@ -57,6 +57,7 @@
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="LanguagePackTest.cpp" />
+    <ClCompile Include="ImageImporterTests.cpp" />
     <ClCompile Include="IniReaderTest.cpp" />
     <ClCompile Include="IniWriterTest.cpp" />
     <ClCompile Include="Localisation.cpp" />