Added shaderType converage (#740)

Signed-off-by: ahcorde <[email protected]>

src/ShaderType_TEST.cc

@@ -0,0 +1,52 @@
+/* * Copyright (C) 2022 Open Source Robotics Foundation
+ *
+ * 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
+ *
+ *     http://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.
+ *
+*/
+
+#include <gtest/gtest.h>
+
+#include "ignition/rendering/ShaderType.hh"
+
+using namespace ignition;
+using namespace rendering;
+
+/////////////////////////////////////////////////
+TEST(ShaderType, ShaderUtil)
+{
+  EXPECT_TRUE(ShaderUtil::IsValid(ShaderType::ST_PIXEL));
+  EXPECT_TRUE(ShaderUtil::IsValid(ShaderType::ST_VERTEX));
+  EXPECT_TRUE(ShaderUtil::IsValid(ShaderType::ST_NORM_OBJ));
+  EXPECT_TRUE(ShaderUtil::IsValid(ShaderType::ST_NORM_TAN));
+  EXPECT_FALSE(ShaderUtil::IsValid(ShaderType::ST_UNKNOWN));
+
+  EXPECT_EQ(ShaderType::ST_PIXEL,
+      ShaderUtil::Sanitize(ShaderType::ST_PIXEL));
+  EXPECT_EQ(ShaderType::ST_UNKNOWN,
+      ShaderUtil::Sanitize(static_cast<ShaderType>(99)));
+
+  EXPECT_EQ("pixel", ShaderUtil::Name(ShaderType::ST_PIXEL));
+  EXPECT_EQ("vertex", ShaderUtil::Name(ShaderType::ST_VERTEX));
+  EXPECT_EQ("normal_map_object_space",
+      ShaderUtil::Name(ShaderType::ST_NORM_OBJ));
+  EXPECT_EQ("normal_map_tangent_space",
+      ShaderUtil::Name(ShaderType::ST_NORM_TAN));
+  EXPECT_EQ("UNKNOWN", ShaderUtil::Name(ShaderType::ST_UNKNOWN));
+
+  EXPECT_EQ(ST_PIXEL, ShaderUtil::Enum("pixel"));
+  EXPECT_EQ(ST_VERTEX, ShaderUtil::Enum("vertex"));
+  EXPECT_EQ(ST_NORM_OBJ, ShaderUtil::Enum("normal_map_object_space"));
+  EXPECT_EQ(ST_NORM_TAN, ShaderUtil::Enum("normal_map_tangent_space"));
+  EXPECT_EQ(ST_UNKNOWN, ShaderUtil::Enum("UNKNOWN"));
+  EXPECT_EQ(ST_UNKNOWN, ShaderUtil::Enum("invalid"));
+}