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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/vespalib/testkit/test_kit.h>
#include <vespa/vespalib/util/regexp.h>
#include <vespa/vespalib/util/exception.h>
#include <regex>
using namespace vespalib;
TEST("require that prefix detection works") {
EXPECT_EQUAL("", Regexp::get_prefix(""));
EXPECT_EQUAL("", Regexp::get_prefix("foo"));
EXPECT_EQUAL("foo", Regexp::get_prefix("^foo"));
EXPECT_EQUAL("", Regexp::get_prefix("^foo|bar"));
EXPECT_EQUAL("foo", Regexp::get_prefix("^foo$"));
EXPECT_EQUAL("foo", Regexp::get_prefix("^foo[a-z]"));
EXPECT_EQUAL("fo", Regexp::get_prefix("^foo{0,1}"));
EXPECT_EQUAL("foo", Regexp::get_prefix("^foo."));
EXPECT_EQUAL("fo", Regexp::get_prefix("^foo*"));
EXPECT_EQUAL("fo", Regexp::get_prefix("^foo?"));
EXPECT_EQUAL("foo", Regexp::get_prefix("^foo+"));
}
TEST("require that prefix detection sometimes underestimates the prefix size") {
EXPECT_EQUAL("", Regexp::get_prefix("^^foo"));
EXPECT_EQUAL("", Regexp::get_prefix("^foo(bar|baz)"));
EXPECT_EQUAL("fo", Regexp::get_prefix("^foo{1,2}"));
EXPECT_EQUAL("foo", Regexp::get_prefix("^foo\\."));
EXPECT_EQUAL("foo", Regexp::get_prefix("^foo(bar)"));
EXPECT_EQUAL("", Regexp::get_prefix("(^foo)"));
EXPECT_EQUAL("", Regexp::get_prefix("^(foo)"));
EXPECT_EQUAL("foo", Regexp::get_prefix("^foo[a]"));
EXPECT_EQUAL("", Regexp::get_prefix("^foo|^foobar"));
}
const vespalib::string special("^|()[]{}.*?+\\$");
struct ExprFixture {
std::vector<vespalib::string> expressions;
ExprFixture() {
expressions.push_back(special);
for (char c: special) {
expressions.push_back(vespalib::string(&c, 1));
}
expressions.push_back("abc");
expressions.push_back("[:digit:]");
}
};
TEST_F("require that regexp can be made from suffix string", ExprFixture()) {
for (vespalib::string str: f1.expressions) {
std::regex re(std::string(Regexp::make_from_suffix(str)));
EXPECT_TRUE(std::regex_search(std::string(str), re));
EXPECT_FALSE(std::regex_search(std::string(str + "foo"), re));
EXPECT_TRUE(std::regex_search(std::string("foo" + str), re));
EXPECT_FALSE(std::regex_search(std::string("foo" + str + "bar"), re));
}
}
TEST_F("require that regexp can be made from substring string", ExprFixture()) {
for (vespalib::string str: f1.expressions) {
std::regex re(std::string(Regexp::make_from_substring(str)));
EXPECT_TRUE(std::regex_search(std::string(str), re));
EXPECT_TRUE(std::regex_search(std::string(str + "foo"), re));
EXPECT_TRUE(std::regex_search(std::string("foo" + str), re));
EXPECT_TRUE(std::regex_search(std::string("foo" + str + "bar"), re));
}
}
TEST_MAIN() { TEST_RUN_ALL(); }
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