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/**
* @file tests/representation_tests.cpp
* @brief Tests for the YARA representation.
* @copyright (c) 2019 Avast Software, licensed under the MIT license
*/
#include <gtest/gtest.h>
#include <iostream>
#include "yaramod/types/meta.h"
#include "yaramod/types/regexp.h"
#include "yaramod/types/token_stream.h"
using namespace ::testing;
namespace yaramod {
namespace tests {
class RepresentationTests : public Test {};
TEST_F(RepresentationTests,
MetaConstruction) {
TokenStream ts;
TokenIt key = ts.emplace_back(TokenType::META_KEY, "author");
TokenIt value = ts.emplace_back(TokenType::META_VALUE, "Mr. Avastian");
auto meta = Meta( key, value );
ASSERT_EQ(meta.getKey(), "author");
ASSERT_TRUE(meta.getValue().isString());
ASSERT_EQ(meta.getValue().getString(), "Mr. Avastian");
EXPECT_EQ(meta.getText(), "author = \"Mr. Avastian\"");
}
TEST_F(RepresentationTests,
MetaSetters) {
TokenStream ts;
TokenIt key = ts.emplace_back(TokenType::META_KEY, "author");
TokenIt value = ts.emplace_back(TokenType::META_VALUE, "Mr. Avastian");
auto meta = Meta( key, value );
meta.setKey("strain");
meta.setValue(Literal("cryptic"));
ASSERT_EQ(meta.getKey(), "strain");
ASSERT_TRUE(meta.getValue().isString());
ASSERT_EQ(meta.getValue().getString(), "cryptic");
EXPECT_EQ(meta.getText(), "strain = \"cryptic\"");
}
TEST_F(RepresentationTests,
MetaCopyIsJustReference) {
TokenStream ts;
TokenIt key = ts.emplace_back(TokenType::META_KEY, "author");
TokenIt value = ts.emplace_back(TokenType::META_VALUE, "Mr. Avastian");
auto meta = Meta(key, value);
auto copy = meta;
ASSERT_EQ(copy.getKey(), "author");
ASSERT_TRUE(copy.getValue().isString());
ASSERT_EQ(copy.getValue().getString(), "Mr. Avastian");
EXPECT_EQ(copy.getText(), "author = \"Mr. Avastian\"");
copy.setKey("strain");
copy.setValue(Literal("cryptic"));
ASSERT_EQ(meta.getKey(), "strain");
ASSERT_TRUE(meta.getValue().isString());
ASSERT_EQ(meta.getValue().getString(), "cryptic");
EXPECT_EQ(meta.getText(), "strain = \"cryptic\"");
}
TEST_F(RepresentationTests,
RegexpConstruction) {
auto ts = std::make_shared<TokenStream>();
auto unit1 = std::make_shared<RegexpText>("abc");
auto regexp1 = Regexp(ts, std::move(unit1));
EXPECT_EQ(regexp1.getText(), "/abc/");
EXPECT_EQ(ts->getTokensAsText(), std::vector<std::string>({"/", "a", "b", "c", "/"}));
regexp1.setIdentifier("$s1");
EXPECT_EQ(ts->getTokensAsText(), std::vector<std::string>({"$s1", "=", "/", "a", "b", "c", "/"}));
auto unit2 = std::make_shared<RegexpAnyChar>();
auto regexp2 = Regexp(ts, std::move(unit2));
EXPECT_EQ(regexp2.getText(), "/./");
EXPECT_EQ(ts->getTokensAsText(), std::vector<std::string>({"$s1", "=", "/", "a", "b", "c", "/", "/", ".", "/" }));
regexp2.setIdentifier("$s2");
EXPECT_EQ(ts->getTokensAsText(), std::vector<std::string>({"$s1", "=", "/", "a", "b", "c", "/", "$s2", "=", "/", ".", "/" }));
auto unit3 = std::make_shared<RegexpEndOfLine>();
auto regexp3 = Regexp(ts, std::move(unit3), "$s3");
EXPECT_EQ(regexp3.getText(), "/$/");
EXPECT_EQ(ts->getTokensAsText(), std::vector<std::string>({"$s1", "=", "/", "a", "b", "c", "/", "$s2", "=", "/", ".", "/" , "$s3", "=", "/", "$", "/" }));
}
TEST_F(RepresentationTests,
RegexpSetters) {
auto ts = std::make_shared<TokenStream>();
auto unit2 = std::make_shared<RegexpAnyChar>();
auto regexp2 = Regexp(ts, std::move(unit2));
EXPECT_EQ(regexp2.getText(), "/./");
EXPECT_EQ(ts->getTokensAsText(), std::vector<std::string>({ "/", ".", "/" }));
regexp2.setIdentifier("$s2");
EXPECT_EQ(ts->getTokensAsText(), std::vector<std::string>({ "$s2", "=", "/", ".", "/" }));
auto unit3 = std::make_shared<RegexpEndOfLine>();
auto regexp3 = Regexp(ts, std::move(unit3), "$s3");
EXPECT_EQ(regexp3.getText(), "/$/");
EXPECT_EQ(ts->getTokensAsText(), std::vector<std::string>({ "$s2", "=", "/", ".", "/", "$s3", "=", "/", "$", "/" }));
regexp2.setSuffixModifiers("modifiers 2");
regexp3.setSuffixModifiers("modifiers 3");
EXPECT_EQ(ts->getTokensAsText(), std::vector<std::string>({ "$s2", "=", "/", ".", "/", "modifiers 2", "$s3", "=", "/", "$", "/", "modifiers 3" }));
}
TEST_F(RepresentationTests,
RegexpConcat) {
std::vector<std::shared_ptr<RegexpUnit>> v;
v.push_back(std::make_shared<RegexpWordChar>());
v.push_back(std::make_shared<RegexpNonWordChar>());
v.push_back(std::make_shared<RegexpSpace>());
v.push_back(std::make_shared<RegexpNonSpace>());
v.push_back(std::make_shared<RegexpDigit>());
v.push_back(std::make_shared<RegexpNonDigit>());
v.push_back(std::make_shared<RegexpWordBoundary>());
v.push_back(std::make_shared<RegexpNonWordBoundary>());
v.push_back(std::make_shared<RegexpStartOfLine>());
RegexpConcat concat(std::move(v));
EXPECT_EQ(concat.getText(), "\\w\\W\\s\\S\\d\\D\\b\\B^");
auto ts = concat.getTokenStream();
EXPECT_EQ(ts->getTokensAsText(), std::vector<std::string>({ "\\w", "\\W", "\\s", "\\S", "\\d", "\\D", "\\b", "\\B", "^" }));
}
TEST_F(RepresentationTests,
RegexpGroup) {
auto unit = std::make_shared<RegexpStartOfLine>();
RegexpGroup group(std::move(unit));
EXPECT_EQ(group.getText(), "(^)");
auto ts = group.getTokenStream();
EXPECT_EQ(ts->getTokensAsText(), std::vector<std::string>({ "(", "^", ")" }));
}
TEST_F(RepresentationTests,
RegexpOr) {
auto unit1 = std::make_shared<RegexpText>("abc");
auto unit2 = std::make_shared<RegexpAnyChar>();
RegexpOr regexp_or(std::move(unit1), std::move(unit2));
EXPECT_EQ(regexp_or.getText(), "abc|.");
auto ts = regexp_or.getTokenStream();
EXPECT_EQ(ts->getTokensAsText(), std::vector<std::string>({ "a", "b", "c", "|", "." }));
}
TEST_F(RepresentationTests,
RegexpRange) {
auto unit = std::make_shared<RegexpText>("abc");
std::optional<std::uint64_t> left(100);
std::optional<std::uint64_t> right(200);
auto pair = std::make_pair(left, right);
bool greedy = false;
RegexpRange range(std::move(unit), std::move(pair) , greedy);
EXPECT_EQ(range.getText(), "abc{100,200}?");
auto ts = range.getTokenStream();
EXPECT_EQ(ts->getTokensAsText(), std::vector<std::string>({"a", "b", "c", "{", "100", ",", "200", "}", "?"}));
}
TEST_F(RepresentationTests,
RegexpOptional) {
auto unit = std::make_shared<RegexpText>("abc");
bool greedy = true;
auto regexp_optional = RegexpOptional(std::move(unit), greedy);
EXPECT_EQ(regexp_optional.getText(), "abc?");
auto ts = regexp_optional.getTokenStream();
EXPECT_EQ(ts->getTokensAsText(), std::vector<std::string>({"a", "b", "c", "?", ""}));
}
TEST_F(RepresentationTests,
RegexpPositiveIteration) {
auto unit = std::make_shared<RegexpText>("abc");
bool greedy = false;
auto regexp_iter = RegexpPositiveIteration(std::move(unit), greedy);
EXPECT_EQ(regexp_iter.getText(), "abc+?");
auto ts = regexp_iter.getTokenStream();
EXPECT_EQ(ts->getTokensAsText(), std::vector<std::string>({"a", "b", "c", "+", "?"}));
}
TEST_F(RepresentationTests,
RegexpIteration) {
auto unit = std::make_shared<RegexpText>("abc");
bool greedy = false;
auto regexp_iter = RegexpIteration(std::move(unit), greedy);
EXPECT_EQ(regexp_iter.getText(), "abc*?");
auto ts = regexp_iter.getTokenStream();
EXPECT_EQ(ts->getTokensAsText(), std::vector<std::string>({"a", "b", "c", "*", "?"}));
}
}
}
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