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/*
* Copyright 2010-2017 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package kotlin.text.test
import org.junit.Test
import kotlin.test.*
class RegexTest {
@Test fun namedGroups() {
val input = "1a 2b 3"
val regex = "(?<num>\\d)(?<liter>\\w)?".toRegex()
val matches = regex.findAll(input).toList()
assertTrue(matches.all { it.groups.size == 3 })
val (m1, m2, m3) = matches
assertEquals("1", m1.groups["num"]?.value)
assertEquals(0..0, m1.groups["num"]?.range)
assertEquals("a", m1.groups["liter"]?.value)
assertEquals(1..1, m1.groups["liter"]?.range)
assertEquals("2", m2.groups["num"]?.value)
assertEquals(3..3, m2.groups["num"]?.range)
assertEquals("b", m2.groups["liter"]?.value)
assertEquals(4..4, m2.groups["liter"]?.range)
assertEquals("3", m3.groups["num"]?.value)
assertNull(m3.groups["liter"])
assertFailsWith<IllegalArgumentException> { m2.groups["unknown_group"] }.let { e ->
assertTrue("unknown_group" in e.message!!)
}
}
}
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