add scaledimagecache
BUG=
Review URL: https://codereview.chromium.org/20005003
git-svn-id: http://skia.googlecode.com/svn/trunk@10286 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tests/ImageCacheTest.cpp b/tests/ImageCacheTest.cpp
new file mode 100644
index 0000000..63b18e8
--- /dev/null
+++ b/tests/ImageCacheTest.cpp
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "Test.h"
+#include "SkScaledImageCache.h"
+
+static void make_bm(SkBitmap* bm, int w, int h) {
+ bm->setConfig(SkBitmap::kARGB_8888_Config, w, h);
+ bm->allocPixels();
+}
+
+static void TestImageCache(skiatest::Reporter* reporter) {
+ static const int COUNT = 10;
+ static const int DIM = 256;
+ static const size_t defLimit = DIM * DIM * 4 * COUNT + 1024; // 1K slop
+ SkScaledImageCache cache(defLimit);
+ SkScaledImageCache::ID* id;
+
+ SkBitmap bm[COUNT];
+
+ SkScalar scale = 2;
+ for (size_t i = 0; i < COUNT; ++i) {
+ SkBitmap tmp;
+
+ make_bm(&bm[i], DIM, DIM);
+ id = cache.findAndLock(bm[i], scale, scale, &tmp);
+ REPORTER_ASSERT(reporter, NULL == id);
+
+ make_bm(&tmp, DIM, DIM);
+ id = cache.addAndLock(bm[i], scale, scale, tmp);
+ REPORTER_ASSERT(reporter, NULL != id);
+
+ SkBitmap tmp2;
+ SkScaledImageCache::ID* id2 = cache.findAndLock(bm[i], scale, scale,
+ &tmp2);
+ REPORTER_ASSERT(reporter, id == id2);
+ REPORTER_ASSERT(reporter, tmp.pixelRef() == tmp2.pixelRef());
+ REPORTER_ASSERT(reporter, tmp.width() == tmp2.width());
+ REPORTER_ASSERT(reporter, tmp.height() == tmp2.height());
+ cache.unlock(id2);
+
+ cache.unlock(id);
+ }
+
+ // stress test, should trigger purges
+ for (size_t i = 0; i < COUNT * 100; ++i) {
+ SkBitmap tmp;
+
+ make_bm(&tmp, DIM, DIM);
+ id = cache.addAndLock(bm[0], scale, scale, tmp);
+ REPORTER_ASSERT(reporter, NULL != id);
+ cache.unlock(id);
+
+ scale += 1;
+ }
+
+ cache.setByteLimit(0);
+}
+
+#include "TestClassDef.h"
+DEFINE_TESTCLASS("ImageCache", TestImageCacheClass, TestImageCache)