/*

* Copyright (c) 2020 The Go Authors. All rights reserved.

*

* Use of this source code is governed by a BSD-style

* license that can be found in the LICENSE file.

*/

package com.google.re2j;

import com.google.common.truth.Truth;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.junit.runners.Parameterized;

import java.util.Arrays;

@RunWith(Parameterized.class)

public class RegexpHashcodeEqualsTest {

@Parameterized.Parameters

public static Iterable<Object[]> testCases() {

return Arrays.asList(

new Object[][] {

{"abc", "abc", true, RE2.POSIX},

{"abc", "def", false, RE2.POSIX},

{"(abc)", "(a)(b)(c)", false, RE2.POSIX},

{"a|$", "a|$", true, RE2.POSIX},

{"abc|def", "def|abc", false, RE2.POSIX},

{"a?", "b?", false, RE2.POSIX},

{"a?", "a?", true, RE2.POSIX},

{"a{1,3}", "a{1,3}", true, RE2.POSIX},

{"a{2,3}", "a{1,3}", false, RE2.POSIX},

{"^((?P<foo>what)a)$", "^((?P<foo>what)a)$", true, RE2.PERL},

{"^((?P<foo>what)a)$", "^((?P<bar>what)a)$", false, RE2.PERL},

});

}

@Parameterized.Parameter public String a;

@Parameterized.Parameter(1)

public String b;

@Parameterized.Parameter(2)

public boolean areEqual;

@Parameterized.Parameter(3)

public int mode;

@Test

public void testEquals() {

Regexp ra = Parser.parse(a, mode);

Regexp rb = Parser.parse(b, mode);

if (areEqual) {

Truth.assertThat(ra).isEqualTo(rb);

Truth.assertThat(ra.hashCode()).isEqualTo(rb.hashCode());

} else {

Truth.assertThat(ra).isNotEqualTo(rb);

}

}

}