diff options
-rw-r--r-- | tests/RegionTest.cpp | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/tests/RegionTest.cpp b/tests/RegionTest.cpp index acb81809de..121f16d6ec 100644 --- a/tests/RegionTest.cpp +++ b/tests/RegionTest.cpp @@ -262,3 +262,31 @@ DEF_TEST(Region, reporter) { test_empties(reporter); test_fromchrome(reporter); } + +// Test that writeToMemory reports the same number of bytes whether there was a +// buffer to write to or not. +static void test_write(const SkRegion& region, skiatest::Reporter* r) { + const size_t bytesNeeded = region.writeToMemory(NULL); + SkAutoMalloc storage(bytesNeeded); + const size_t bytesWritten = region.writeToMemory(storage.get()); + REPORTER_ASSERT(r, bytesWritten == bytesNeeded); +} + +DEF_TEST(Region_writeToMemory, r) { + // Test an empty region. + SkRegion region; + REPORTER_ASSERT(r, region.isEmpty()); + test_write(region, r); + + // Test a rectangular region + bool nonEmpty = region.setRect(0, 0, 50, 50); + REPORTER_ASSERT(r, nonEmpty); + REPORTER_ASSERT(r, region.isRect()); + test_write(region, r); + + // Test a complex region + nonEmpty = region.op(50, 50, 100, 100, SkRegion::kUnion_Op); + REPORTER_ASSERT(r, nonEmpty); + REPORTER_ASSERT(r, region.isComplex()); + test_write(region, r); +} |