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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/tint/scope_stack.h"
#include "gtest/gtest.h"
#include "src/tint/program_builder.h"
namespace tint {
namespace {
class ScopeStackTest : public ProgramBuilder, public testing::Test {};
TEST_F(ScopeStackTest, Get) {
ScopeStack<Symbol, uint32_t> s;
Symbol a(1, ID());
Symbol b(3, ID());
s.Push();
s.Set(a, 5u);
s.Set(b, 10u);
EXPECT_EQ(s.Get(a), 5u);
EXPECT_EQ(s.Get(b), 10u);
s.Push();
s.Set(a, 15u);
EXPECT_EQ(s.Get(a), 15u);
EXPECT_EQ(s.Get(b), 10u);
s.Pop();
EXPECT_EQ(s.Get(a), 5u);
EXPECT_EQ(s.Get(b), 10u);
}
TEST_F(ScopeStackTest, Get_MissingSymbol) {
ScopeStack<Symbol, uint32_t> s;
Symbol sym(1, ID());
EXPECT_EQ(s.Get(sym), 0u);
}
TEST_F(ScopeStackTest, Set) {
ScopeStack<Symbol, uint32_t> s;
Symbol a(1, ID());
Symbol b(2, ID());
EXPECT_EQ(s.Set(a, 5u), 0u);
EXPECT_EQ(s.Get(a), 5u);
EXPECT_EQ(s.Set(b, 10u), 0u);
EXPECT_EQ(s.Get(b), 10u);
EXPECT_EQ(s.Set(a, 20u), 5u);
EXPECT_EQ(s.Get(a), 20u);
EXPECT_EQ(s.Set(b, 25u), 10u);
EXPECT_EQ(s.Get(b), 25u);
}
TEST_F(ScopeStackTest, Clear) {
ScopeStack<Symbol, uint32_t> s;
Symbol a(1, ID());
Symbol b(2, ID());
EXPECT_EQ(s.Set(a, 5u), 0u);
EXPECT_EQ(s.Get(a), 5u);
s.Push();
EXPECT_EQ(s.Set(b, 10u), 0u);
EXPECT_EQ(s.Get(b), 10u);
s.Push();
s.Clear();
EXPECT_EQ(s.Get(a), 0u);
EXPECT_EQ(s.Get(b), 0u);
}
} // namespace
} // namespace tint