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/**
* @file tests/tokenstream_tests.cpp
* @brief Tests for the YARA literal.
* @copyright (c) 2019 Avast Software, licensed under the MIT license
*/
#include <gtest/gtest.h>
#include <iostream>
#include "yaramod/types/token_stream.h"
#include "yaramod/types/meta.h"
using namespace ::testing;
namespace yaramod {
namespace tests {
class TokenStreamTests : public Test {};
TEST_F(TokenStreamTests,
BoolLiteral) {
auto l = Literal(true);
ASSERT_TRUE(l.isBool());
ASSERT_TRUE(l.getBool());
ASSERT_EQ(l.getText(), "true");
l = Literal(false);
ASSERT_TRUE(l.isBool());
ASSERT_FALSE(l.getBool());
ASSERT_EQ(l.getText(), "false");
l = Literal(true, "Yes");
ASSERT_TRUE(l.isBool());
ASSERT_TRUE(l.getBool());
ASSERT_EQ(l.getText(), "Yes");
}
TEST_F(TokenStreamTests,
TokenStreamFindSimple) {
TokenStream ts;
auto found = ts.find(TokenType::META_KEY);
ASSERT_EQ(found, ts.end());
TokenIt key = ts.emplace_back(TokenType::META_KEY, "author");
found = ts.find(TokenType::META_KEY);
ASSERT_EQ(found, key);
}
TEST_F(TokenStreamTests,
TokenStreamFind) {
TokenStream ts;
TokenIt c1 = ts.emplace_back(TokenType::COMMENT, "/*c1*/");
ts.emplace_back(TokenType::COMMENT, "/*c2*/");
TokenIt k1 = ts.emplace_back(TokenType::META_KEY, "k1");
TokenIt c3 = ts.emplace_back(TokenType::COMMENT, "/*c3*/");
ts.emplace_back(TokenType::META_KEY, "k2");
TokenIt c4 = ts.emplace_back(TokenType::COMMENT, "/*c4*/");
ts.emplace_back(TokenType::COMMENT, "/*c5*/");
ts.emplace_back(TokenType::META_KEY, "k3");
ASSERT_EQ(ts.find(COMMENT), c1);
ASSERT_EQ(ts.find(COMMENT, k1), c3);
ASSERT_EQ(ts.find(COMMENT, c3), c3);
ASSERT_EQ(ts.find(META_VALUE), ts.end());
ASSERT_EQ(ts.find(META_VALUE, c1), ts.end());
ASSERT_EQ(ts.find(META_VALUE, c1, c4), c4 );
}
TEST_F(TokenStreamTests,
TokenStreamFindBackwardsSimple) {
TokenStream ts;
auto found = ts.findBackwards(TokenType::META_KEY);
ASSERT_EQ(found, ts.begin());
TokenIt key = ts.emplace_back(TokenType::META_KEY, "author");
found = ts.findBackwards(TokenType::META_KEY);
ASSERT_EQ(found, key);
}
TEST_F(TokenStreamTests,
TokenStreamFindBackwards) {
TokenStream ts;
TokenIt c1 = ts.emplace_back(TokenType::COMMENT, "/*c1*/");
TokenIt c2 = ts.emplace_back(TokenType::COMMENT, "/*c2*/");
TokenIt k1 = ts.emplace_back(TokenType::META_KEY, "k1");
TokenIt c3 = ts.emplace_back(TokenType::COMMENT, "/*c3*/");
TokenIt k2 = ts.emplace_back(TokenType::META_KEY, "k2");
TokenIt c4 = ts.emplace_back(TokenType::COMMENT, "/*c4*/");
TokenIt c5 = ts.emplace_back(TokenType::COMMENT, "/*c5*/");
ts.emplace_back(TokenType::META_KEY, "k3");
ASSERT_EQ(ts.findBackwards(COMMENT), c5);
ASSERT_EQ(ts.findBackwards(COMMENT, k1), c2);
ASSERT_EQ(ts.findBackwards(COMMENT, c3), c2);
ASSERT_EQ(ts.findBackwards(META_VALUE), ts.end());
ASSERT_EQ(ts.findBackwards(META_VALUE, c1), c1);
ASSERT_EQ(ts.findBackwards(META_KEY, c1, c4), k2 );
}
TEST_F(TokenStreamTests,
TokenStreamEmplaceBack) {
TokenStream ts;
TokenIt key = ts.emplace_back(TokenType::META_KEY, "author");
ts.emplace_back(TokenType::EQ, "=");
TokenIt value = ts.emplace_back(TokenType::META_VALUE, "Mr. Avastian");
ASSERT_EQ(key->getPureText(), "author");
ASSERT_EQ(value->getPureText(), "Mr. Avastian");
}
TEST_F(TokenStreamTests,
TokenStreamEmplace) {
TokenStream ts;
auto key = ts.emplace_back(TokenType::META_KEY, "author");
ts.emplace_back(TokenType::EQ, "=");
auto value = ts.emplace_back(TokenType::META_VALUE, "Mr. Avastian");
auto comment = ts.emplace(value, TokenType::COMMENT, "/*comment about the author*/");
ASSERT_EQ(key->getPureText(), "author");
ASSERT_EQ(value->getPureText(), "Mr. Avastian");
ASSERT_EQ(comment->getPureText(), "/*comment about the author*/");
}
TEST_F(TokenStreamTests,
TokenStreamPushBack) {
TokenStream ts;
Token t(TokenType::RULE_NAME, Literal("rule_name"));
TokenIt name = ts.push_back(t);
ASSERT_EQ(name->getPureText(), "rule_name");
}
TEST_F(TokenStreamTests,
TokenStreamErase) {
TokenStream ts;
TokenIt key = ts.emplace_back(TokenType::META_KEY, "author");
ts.emplace_back(TokenType::META_KEY, "=");
TokenIt comment1 = ts.emplace_back(TokenType::COMMENT, "/*comment before author name*/");
TokenIt value = ts.emplace_back(TokenType::META_KEY, "author_name");
TokenIt comment2 = ts.emplace_back(TokenType::COMMENT, "/*comment after author name*/");
TokenIt behindErased = ts.erase(comment1);
ASSERT_EQ(behindErased, value);
behindErased = ts.erase(key, comment2);
ASSERT_EQ(behindErased, comment2);
ASSERT_EQ(comment2->getPureText(), "/*comment after author name*/");
ts.clear();
ASSERT_EQ(ts.size(), 0);
ASSERT_TRUE(ts.empty());
}
}
}
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