[AmberScript] Implement EXPECT EQ_RGB(A)? parsing (#367)

This CL adds the EXPECT parsing for EQ_RGB and EQ_RGBA expectations.
This is enough to allow a clear.amber script to be written.

Issue #345.

1 files changed, 39 insertions, 0 deletions

diff --git a/tests/cases/clear.amber b/tests/cases/clear.amber
new file mode 100644
index 0000000..705b290
--- /dev/null
+++ b/tests/cases/clear.amber
@@ -0,0 +1,39 @@
+#!amber
+# Copyright 2019 The Amber Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+SHADER vertex vtex_shader PASSTHROUGH
+SHADER fragment frag_shader GLSL
+#version 430
+
+layout(location = 0) in vec4 color_in;
+layout(location = 0) out vec4 color_out;
+
+void main() {
+  color_out = color_in;
+}
+END
+
+BUFFER img_buf FORMAT B8G8R8A8_UNORM
+
+PIPELINE graphics my_pipeline
+  ATTACH vtex_shader
+  ATTACH frag_shader
+
+  FRAMEBUFFER_SIZE 256 256
+  BIND BUFFER img_buf AS color LOCATION 0
+END
+
+CLEAR my_pipeline
+EXPECT my_pipeline BUFFER img_buf IDX 0 0 SIZE 256 256 EQ_RGBA 0 0 0 0