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package scala.util.matching
import org.junit.Assert._
import org.junit.Test
import org.junit.runner.RunWith
import org.junit.runners.JUnit4
import scala.tools.testing.AssertUtil._
@RunWith(classOf[JUnit4])
class RegexTest {
@Test def t8022CharSequence(): Unit = {
val full = """.*: (.)$""".r
val text = " When I use this operator: *"
// Testing 2.10.x compatibility of the return types of unapplySeq
val x :: Nil = full.unapplySeq(text: Any).get
val y :: Nil = full.unapplySeq(text: CharSequence).get
assertEquals("*", x)
assertEquals("*", y)
}
@Test def t8022Match(): Unit = {
val R = """(\d)""".r
val matchh = R.findFirstMatchIn("a1").get
// Testing 2.10.x compatibility of the return types of unapplySeq
val x :: Nil = R.unapplySeq(matchh: Any).get
val y :: Nil = R.unapplySeq(matchh).get
assertEquals("1", x)
assertEquals("1", y)
}
@Test def t8787nullMatch() = {
val r = """\d+""".r
val s: String = null
val x = s match { case r() => 1 ; case _ => 2 }
assertEquals(2, x)
}
@Test def t8787nullMatcher() = {
val r = """(\d+):(\d+)""".r
val s = "1:2 3:4 5:6"
val z = ((r findAllMatchIn s).toList :+ null) flatMap {
case r(x, y) => Some((x.toInt, y.toInt))
case _ => None
}
assertEquals(List((1,2),(3,4),(5,6)), z)
}
@Test def `SI-9666: use inline group names`(): Unit = {
val r = new Regex("a(?<Bee>b*)c")
val ms = r findAllIn "stuff abbbc more abc and so on"
assertTrue(ms.hasNext)
assertEquals("abbbc", ms.next())
assertEquals("bbb", ms group "Bee")
assertTrue(ms.hasNext)
assertEquals("abc", ms.next())
assertEquals("b", ms group "Bee")
assertFalse(ms.hasNext)
}
@Test def `SI-9666: use explicit group names`(): Unit = {
val r = new Regex("a(b*)c", "Bee")
val ms = r findAllIn "stuff abbbc more abc and so on"
assertTrue(ms.hasNext)
assertEquals("abbbc", ms.next())
assertEquals("bbb", ms group "Bee")
assertTrue(ms.hasNext)
assertEquals("abc", ms.next())
assertEquals("b", ms group "Bee")
assertFalse(ms.hasNext)
}
@Test def `SI-9666: fall back to explicit group names`(): Unit = {
val r = new Regex("a(?<Bar>b*)c", "Bee")
val ms = r findAllIn "stuff abbbc more abc and so on"
assertTrue(ms.hasNext)
assertEquals("abbbc", ms.next())
assertEquals("bbb", ms group "Bee")
assertEquals("bbb", ms group "Bar")
assertTrue(ms.hasNext)
assertEquals("abc", ms.next())
assertEquals("b", ms group "Bee")
assertEquals("b", ms group "Bar")
assertFalse(ms.hasNext)
}
type NoGroup = IllegalArgumentException
type NoMatch = NoSuchElementException
type NoData = IllegalStateException
@Test def `SI-9666: throw on bad name`(): Unit = {
assertThrows[NoGroup] {
val r = new Regex("a(?<Bar>b*)c")
val ms = r findAllIn "stuff abbbc more abc and so on"
assertTrue(ms.hasNext)
ms group "Bee"
}
assertThrows[NoGroup] {
val r = new Regex("a(?<Bar>b*)c", "Bar")
val ms = r findAllIn "stuff abbbc more abc and so on"
assertTrue(ms.hasNext)
ms group "Bee"
}
assertThrows[NoGroup] {
val r = new Regex("a(b*)c", "Bar")
val ms = r findAllIn "stuff abbbc more abc and so on"
assertTrue(ms.hasNext)
ms group "Bee"
}
}
@Test def `SI-9827 MatchIterator ergonomics`(): Unit = {
val r = "(ab)(cd)".r
val s = "xxxabcdyyyabcdzzz"
assertEquals(3, r.findAllIn(s).start)
assertEquals(5, r.findAllIn(s).start(2))
locally {
val mi = r.findAllIn(s)
assertTrue(mi.hasNext)
assertEquals(3, mi.start)
assertEquals("abcd", mi.next())
assertEquals(3, mi.start)
assertTrue(mi.hasNext)
assertEquals(10, mi.start)
}
locally {
val mi = r.findAllIn(s)
assertEquals("abcd", mi.next())
assertEquals(3, mi.start)
assertEquals("abcd", mi.next())
assertEquals(10, mi.start)
assertThrows[NoMatch] { mi.next() }
assertThrows[NoData] { mi.start }
}
locally {
val mi = r.findAllIn("")
assertThrows[NoData] { mi.start }
assertThrows[NoMatch] { mi.next() }
}
locally {
val mi = r.findAllMatchIn(s)
val x = mi.next()
assertEquals("abcd", x.matched)
assertEquals(3, x.start)
val y = mi.next()
assertEquals("abcd", y.matched)
assertEquals(10, y.start)
assertThrows[NoMatch] { mi.next() }
assertEquals(3, x.start)
assertEquals(10, y.start)
}
locally {
val regex = "(foo)-(.*)".r
val s = "foo-abc-def"
val result = regex.findAllIn(s)
//result.toString // comment this line to make it not work
val r = (result.group(1), result.group(2))
assertEquals(("foo", "abc-def"), r)
}
locally {
val t = "this is a test"
val rx = " ".r
val m = rx.findAllIn(t)
assertEquals(5, rx.findAllIn(t).end)
}
locally {
val data = "<a>aaaaa</a><b>bbbbbb</b><c>ccccccc</c>"
val p = "^<a>(.+)</a><b>(.+)</b><c>(.+)</c>$".r
val parts = p.findAllIn(data)
val aes = parts.group(1)
val bes = parts.group(2)
val ces = parts.group(3)
assertEquals("ccccccc", ces)
assertEquals("bbbbbb", bes)
assertEquals("aaaaa", aes)
}
}
}
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