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Writing Skia Tests
==================
+ [Unit Tests](#test)
+ [Rendering Tests](#gm)
+ [Benchmark Tests](#bench)
We assume you have already synced Skia's dependecies and set up Skia's build system.
<!--?prettify lang=sh?-->
python tools/git-sync-deps
bin/gn gen out/Debug
bin/gn gen out/Release --args='is_debug=false'
<span id="test"></span>
Writing a Unit Test
-------------------
1. Add a file `tests/NewUnitTest.cpp`:
<!--?prettify lang=cc?-->
/*
* Copyright ........
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file.
*/
#include "Test.h"
DEF_TEST(NewUnitTest, reporter) {
if (1 + 1 != 2) {
ERRORF(reporter, "%d + %d != %d", 1, 1, 2);
}
bool lifeIsGood = true;
REPORTER_ASSERT(reporter, lifeIsGood);
}
2. Add `NewUnitTest.cpp` to `gn/tests.gni`.
3. Recompile and run test:
<!--?prettify lang=sh?-->
ninja -C out/Debug dm
out/Debug/dm --match NewUnitTest
<span id="gm"></span>
Writing a Rendering Test
------------------------
1. Add a file `gm/newgmtest.cpp`:
<!--?prettify lang=cc?-->
/*
* Copyright ........
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file.
*/
#include "gm.h"
DEF_SIMPLE_GM(newgmtest, canvas, 128, 128) {
canvas->clear(SK_ColorWHITE);
SkPaint p;
p.setStrokeWidth(2);
canvas->drawLine(16, 16, 112, 112, p);
}
2. Add `newgmtest.cpp` to `gn/gm.gni`.
3. Recompile and run test:
<!--?prettify lang=sh?-->
ninja -C out/Debug dm
out/Debug/dm --match newgmtest
4. Run the GM inside SampleApp:
<!--?prettify lang=sh?-->
ninja -C out/Debug SampleApp
out/Debug/SampleApp --slide GM:newgmtest
<span id="bench"></span>
Writing a Benchmark Test
------------------------
1. Add a file `bench/FooBench.cpp`:
<!--?prettify lang=cc?-->
/*
* Copyright ........
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file.
*/
#include "Benchmark.h"
#include "SkCanvas.h"
namespace {
class FooBench : public Benchmark {
public:
FooBench() {}
virtual ~FooBench() {}
protected:
const char* onGetName() override { return "Foo"; }
SkIPoint onGetSize() override { return SkIPoint{100, 100}; }
void onDraw(int loops, SkCanvas* canvas) override {
while (loops-- > 0) {
canvas->drawLine(0.0f, 0.0f, 100.0f, 100.0f, SkPaint());
}
}
};
} // namespace
DEF_BENCH(return new FooBench;)
2. Add `FooBench.cpp` to `gn/bench.gni`.
3. Recompile and run nanobench:
<!--?prettify lang=sh?-->
ninja -C out/Release nanobench
out/Release/nanobench --match Foo
|
