1 files changed, 57 insertions, 0 deletions
diff --git a/test/sprite/sprite_image.test.cpp b/test/sprite/sprite_image.test.cpp
new file mode 100644
index 0000000000..f8982826a3
--- /dev/null
+++ b/test/sprite/sprite_image.test.cpp
@@ -0,0 +1,57 @@
+#include <mbgl/test/util.hpp>
+
+#include <mbgl/sprite/sprite_image.hpp>
+#include <mbgl/util/image.hpp>
+#include <mbgl/util/exception.hpp>
+
+using namespace mbgl;
+
+TEST(Sprite, SpriteImageZeroWidth) {
+    PremultipliedImage image(0, 16);
+    try {
+        SpriteImage(std::move(image), 2.0);
+        FAIL() << "Expected exception";
+    } catch (util::SpriteImageException& ex) {
+        EXPECT_STREQ("Sprite image dimensions may not be zero", ex.what());
+    }
+}
+
+TEST(Sprite, SpriteImageZeroHeight) {
+    PremultipliedImage image(16, 0);
+    try {
+        SpriteImage(std::move(image), 2.0);
+        FAIL() << "Expected exception";
+    } catch (util::SpriteImageException& ex) {
+        EXPECT_STREQ("Sprite image dimensions may not be zero", ex.what());
+    }
+}
+
+TEST(Sprite, SpriteImageZeroRatio) {
+    PremultipliedImage image(16, 16);
+    try {
+        SpriteImage(std::move(image), 0.0);
+        FAIL() << "Expected exception";
+    } catch (util::SpriteImageException& ex) {
+        EXPECT_STREQ("Sprite pixelRatio may not be <= 0", ex.what());
+    }
+}
+
+TEST(Sprite, SpriteImage) {
+    PremultipliedImage image(32, 24);
+    SpriteImage sprite(std::move(image), 2.0);
+    EXPECT_EQ(16, sprite.getWidth());
+    EXPECT_EQ(32u, sprite.image.width);
+    EXPECT_EQ(12, sprite.getHeight());
+    EXPECT_EQ(24u, sprite.image.height);
+    EXPECT_EQ(2, sprite.pixelRatio);
+}
+
+TEST(Sprite, SpriteImageFractionalRatio) {
+    PremultipliedImage image(20, 12);
+    SpriteImage sprite(std::move(image), 1.5);
+    EXPECT_EQ(float(20.0 / 1.5), sprite.getWidth());
+    EXPECT_EQ(20u, sprite.image.width);
+    EXPECT_EQ(float(12.0 / 1.5), sprite.getHeight());
+    EXPECT_EQ(12u, sprite.image.height);
+    EXPECT_EQ(1.5, sprite.pixelRatio);
+}