Split WGSL generator tests to individual files.
This makes it easier to find and track tests as the generator grows.
Bug: tint:4
Change-Id: I9660e459f3ffd33f3048a331f23623318af013e0
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/16840
Reviewed-by: David Neto <dneto@google.com>
diff --git a/src/writer/wgsl/generator_impl_variable_test.cc b/src/writer/wgsl/generator_impl_variable_test.cc
new file mode 100644
index 0000000..06463e8
--- /dev/null
+++ b/src/writer/wgsl/generator_impl_variable_test.cc
@@ -0,0 +1,124 @@
+// Copyright 2020 The Tint 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
+//
+// 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 <memory>
+#include <vector>
+
+#include "gtest/gtest.h"
+#include "src/ast/binding_decoration.h"
+#include "src/ast/builtin_decoration.h"
+#include "src/ast/decorated_variable.h"
+#include "src/ast/location_decoration.h"
+#include "src/ast/set_decoration.h"
+#include "src/ast/type/f32_type.h"
+#include "src/ast/variable_decoration.h"
+#include "src/writer/wgsl/generator_impl.h"
+
+namespace tint {
+namespace writer {
+namespace wgsl {
+namespace {
+
+using GeneratorImplTest = testing::Test;
+
+TEST_F(GeneratorImplTest, EmitVariable) {
+ ast::type::F32Type f32;
+ ast::Variable v("a", ast::StorageClass::kNone, &f32);
+
+ GeneratorImpl g;
+ ASSERT_TRUE(g.EmitVariable(&v)) << g.error();
+ EXPECT_EQ(g.result(), R"(var a : f32;
+)");
+}
+
+TEST_F(GeneratorImplTest, EmitVariable_StorageClass) {
+ ast::type::F32Type f32;
+ ast::Variable v("a", ast::StorageClass::kInput, &f32);
+
+ GeneratorImpl g;
+ ASSERT_TRUE(g.EmitVariable(&v)) << g.error();
+ EXPECT_EQ(g.result(), R"(var<in> a : f32;
+)");
+}
+
+TEST_F(GeneratorImplTest, EmitVariable_Decorated) {
+ ast::type::F32Type f32;
+
+ std::vector<std::unique_ptr<ast::VariableDecoration>> decos;
+ decos.push_back(std::make_unique<ast::LocationDecoration>(2));
+
+ ast::DecoratedVariable dv;
+ dv.set_name("a");
+ dv.set_type(&f32);
+ dv.set_decorations(std::move(decos));
+
+ GeneratorImpl g;
+ ASSERT_TRUE(g.EmitVariable(&dv)) << g.error();
+ EXPECT_EQ(g.result(), R"([[location 2]] var a : f32;
+)");
+}
+
+TEST_F(GeneratorImplTest, EmitVariable_Decorated_Multiple) {
+ ast::type::F32Type f32;
+
+ std::vector<std::unique_ptr<ast::VariableDecoration>> decos;
+ decos.push_back(
+ std::make_unique<ast::BuiltinDecoration>(ast::Builtin::kPosition));
+ decos.push_back(std::make_unique<ast::BindingDecoration>(0));
+ decos.push_back(std::make_unique<ast::SetDecoration>(1));
+ decos.push_back(std::make_unique<ast::LocationDecoration>(2));
+
+ ast::DecoratedVariable dv;
+ dv.set_name("a");
+ dv.set_type(&f32);
+ dv.set_decorations(std::move(decos));
+
+ GeneratorImpl g;
+ ASSERT_TRUE(g.EmitVariable(&dv)) << g.error();
+ EXPECT_EQ(g.result(),
+ R"([[builtin position, binding 0, set 1, location 2]] var a : f32;
+)");
+}
+
+TEST_F(GeneratorImplTest, EmitVariable_Initializer) {
+ auto ident = std::make_unique<ast::IdentifierExpression>("initializer");
+
+ ast::type::F32Type f32;
+ ast::Variable v("a", ast::StorageClass::kNone, &f32);
+ v.set_initializer(std::move(ident));
+
+ GeneratorImpl g;
+ ASSERT_TRUE(g.EmitVariable(&v)) << g.error();
+ EXPECT_EQ(g.result(), R"(var a : f32 = initializer;
+)");
+}
+
+TEST_F(GeneratorImplTest, EmitVariable_Const) {
+ auto ident = std::make_unique<ast::IdentifierExpression>("initializer");
+
+ ast::type::F32Type f32;
+ ast::Variable v("a", ast::StorageClass::kNone, &f32);
+ v.set_initializer(std::move(ident));
+ v.set_is_const(true);
+
+ GeneratorImpl g;
+ ASSERT_TRUE(g.EmitVariable(&v)) << g.error();
+ EXPECT_EQ(g.result(), R"(const a : f32 = initializer;
+)");
+}
+
+} // namespace
+} // namespace wgsl
+} // namespace writer
+} // namespace tint
