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// Copyright 2020 The Dawn & Tint Authors //
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
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// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
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#include "src/tint/utils/containers/scope_stack.h"
#include "gtest/gtest.h"
#include "src/tint/lang/wgsl/program/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(), "1");
Symbol b(3, ID(), "3");
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(), "1");
EXPECT_EQ(s.Get(sym), 0u);
}
TEST_F(ScopeStackTest, Set) {
ScopeStack<Symbol, uint32_t> s;
Symbol a(1, ID(), "1");
Symbol b(2, ID(), "2");
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(), "1");
Symbol b(2, ID(), "2");
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