Sprite store API

test/annotations/sprite_image.cpp

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+#include "../fixtures/util.hpp"
+
+#include <mbgl/annotation/sprite_image.hpp>
+#include <mbgl/util/exception.hpp>
+
+using namespace mbgl;
+
+TEST(Annotations, SpriteImageZeroWidth) {
+    try {
+        SpriteImage(0, 16, 2, "");
+        FAIL() << "Expected exception";
+    } catch (util::SpriteImageException& ex) {
+        EXPECT_STREQ("Sprite image dimensions may not be zero", ex.what());
+    }
+}
+
+TEST(Annotations, SpriteImageZeroHeight) {
+    try {
+        SpriteImage(16, 0, 2, "");
+        FAIL() << "Expected exception";
+    } catch (util::SpriteImageException& ex) {
+        EXPECT_STREQ("Sprite image dimensions may not be zero", ex.what());
+    }
+}
+
+TEST(Annotations, SpriteImageZeroRatio) {
+    try {
+        SpriteImage(16, 16, 0, "");
+        FAIL() << "Expected exception";
+    } catch (util::SpriteImageException& ex) {
+        EXPECT_STREQ("Sprite image dimensions may not be zero", ex.what());
+    }
+}
+
+TEST(Annotations, SpriteImageMismatchedData) {
+    try {
+        SpriteImage(16, 16, 2, "");
+        FAIL() << "Expected exception";
+    } catch (util::SpriteImageException& ex) {
+        EXPECT_STREQ("Sprite image pixel count mismatch", ex.what());
+    }
+}
+
+TEST(Annotations, SpriteImage) {
+    std::string pixels(32 * 24 * 4, '\0');
+    SpriteImage sprite(16, 12, 2, std::move(pixels));
+    EXPECT_EQ(16, sprite.width);
+    EXPECT_EQ(32, sprite.pixelWidth);
+    EXPECT_EQ(12, sprite.height);
+    EXPECT_EQ(24, sprite.pixelHeight);
+    EXPECT_EQ(2, sprite.ratio);
+    EXPECT_EQ(32u * 24 * 4, sprite.data.size());
+}
+
+TEST(Annotations, SpriteImageFractionalRatio) {
+    std::string pixels(20 * 12 * 4, '\0');
+    SpriteImage sprite(13, 8, 1.5, std::move(pixels));
+    EXPECT_EQ(13, sprite.width);
+    EXPECT_EQ(20, sprite.pixelWidth);
+    EXPECT_EQ(8, sprite.height);
+    EXPECT_EQ(12, sprite.pixelHeight);
+    EXPECT_EQ(1.5, sprite.ratio);
+    EXPECT_EQ(20u * 12 * 4, sprite.data.size());
+}

test/annotations/sprite_store.cpp

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+#include "../fixtures/util.hpp"
+
+#include <mbgl/annotation/sprite_store.hpp>
+
+using namespace mbgl;
+
+TEST(Annotations, SpriteStore) {
+    const auto sprite1 = std::make_shared<SpriteImage>(8, 8, 2, std::string(16 * 16 * 4, '\0'));
+    const auto sprite2 = std::make_shared<SpriteImage>(8, 8, 2, std::string(16 * 16 * 4, '\0'));
+    const auto sprite3 = std::make_shared<SpriteImage>(8, 8, 2, std::string(16 * 16 * 4, '\0'));
+
+    using Sprites = std::map<std::string, std::shared_ptr<const SpriteImage>>;
+    SpriteStore store(2);
+
+    // Adding single
+    store.setSprite("one", sprite1);
+    EXPECT_EQ(Sprites({
+        { "one", sprite1 },
+    }), store.getDirty());
+    EXPECT_EQ(Sprites(), store.getDirty());
+
+    // Adding multiple
+    store.setSprite("two", sprite2);
+    store.setSprite("three", sprite3);
+    EXPECT_EQ(Sprites({
+        { "two", sprite2 },
+        { "three", sprite3 },
+    }), store.getDirty());
+    EXPECT_EQ(Sprites(), store.getDirty());
+
+    // Removing
+    store.removeSprite("one");
+    store.removeSprite("two");
+    EXPECT_EQ(Sprites({
+        { "one", nullptr },
+        { "two", nullptr },
+    }), store.getDirty());
+    EXPECT_EQ(Sprites(), store.getDirty());
+
+    // Accessing
+    EXPECT_EQ(sprite3, store.getSprite("three"));
+    EXPECT_EQ(nullptr, store.getSprite("two"));
+    EXPECT_EQ(nullptr, store.getSprite("four"));
+
+    // Overwriting
+    store.setSprite("three", sprite1);
+    EXPECT_EQ(Sprites({
+        { "three", sprite1 },
+    }), store.getDirty());
+    EXPECT_EQ(Sprites(), store.getDirty());
+}