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// 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 "src/scope_stack.h"
#include "gtest/gtest.h"
#include "src/program_builder.h"
namespace tint {
namespace {
class ScopeStackTest : public ProgramBuilder, public testing::Test {};
TEST_F(ScopeStackTest, Global) {
ScopeStack<uint32_t> s;
Symbol sym(1, ID());
s.set_global(sym, 5);
uint32_t val = 0;
EXPECT_TRUE(s.get(sym, &val));
EXPECT_EQ(val, 5u);
}
TEST_F(ScopeStackTest, Global_SetWithPointer) {
auto* v = Var("my_var", ty.f32(), ast::StorageClass::kNone);
ScopeStack<ast::Variable*> s;
s.set_global(v->symbol(), v);
ast::Variable* v2 = nullptr;
EXPECT_TRUE(s.get(v->symbol(), &v2));
EXPECT_EQ(v2->symbol(), v->symbol());
}
TEST_F(ScopeStackTest, Global_CanNotPop) {
ScopeStack<uint32_t> s;
Symbol sym(1, ID());
s.set_global(sym, 5);
s.pop_scope();
uint32_t val = 0;
EXPECT_TRUE(s.get(sym, &val));
EXPECT_EQ(val, 5u);
}
TEST_F(ScopeStackTest, Scope) {
ScopeStack<uint32_t> s;
Symbol sym(1, ID());
s.push_scope();
s.set(sym, 5);
uint32_t val = 0;
EXPECT_TRUE(s.get(sym, &val));
EXPECT_EQ(val, 5u);
}
TEST_F(ScopeStackTest, Get_MissingSymbol) {
ScopeStack<uint32_t> s;
Symbol sym(1, ID());
uint32_t ret = 0;
EXPECT_FALSE(s.get(sym, &ret));
EXPECT_EQ(ret, 0u);
}
TEST_F(ScopeStackTest, Has) {
ScopeStack<uint32_t> s;
Symbol sym(1, ID());
Symbol sym2(2, ID());
s.set_global(sym2, 3);
s.push_scope();
s.set(sym, 5);
EXPECT_TRUE(s.has(sym));
EXPECT_TRUE(s.has(sym2));
}
TEST_F(ScopeStackTest, ReturnsScopeBeforeGlobalFirst) {
ScopeStack<uint32_t> s;
Symbol sym(1, ID());
s.set_global(sym, 3);
s.push_scope();
s.set(sym, 5);
uint32_t ret;
EXPECT_TRUE(s.get(sym, &ret));
EXPECT_EQ(ret, 5u);
}
} // namespace
} // namespace tint