[WASM] Regex std implementation

libraries/stdlib/native-wasm/test/harmony_regex/AllCodePointsTest.kt

@@ -0,0 +1,65 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one or more
+ *  contributor license agreements.  See the NOTICE file distributed with
+ *  this work for additional information regarding copyright ownership.
+ *  The ASF licenses this file to You 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 test.text.harmony_regex
+
+import kotlin.text.*
+import kotlin.test.*
+
+class AllCodePointsTest {
+
+    fun assertTrue(msg: String, value: Boolean) = assertTrue(value, msg)
+    fun assertFalse(msg: String, value: Boolean) = assertFalse(value, msg)
+
+    fun codePointToString(codePoint: Int): String {
+        val charArray = Char.toChars(codePoint)
+        return charArray.concatToString(0, charArray.size)
+    }
+
+    // TODO: Here is a performance problem: an execution of this test requires much more time than it in Kotlin/JVM.
+    @Test fun test() {
+        // Regression for HARMONY-3145
+        var p = Regex("(\\p{all})+")
+        var res = true
+        var cnt = 0
+        var s: String
+        for (i in 0..1114111) {
+            s = codePointToString(i)
+            if (!s.matches(p)) {
+                cnt++
+                res = false
+            }
+        }
+        assertTrue(res)
+        assertEquals(0, cnt)
+
+        p = Regex("(\\P{all})+")
+        res = true
+        cnt = 0
+
+        for (i in 0..1114111) {
+            s = codePointToString(i)
+            if (!s.matches(p)) {
+                cnt++
+                res = false
+            }
+        }
+
+        assertFalse(res)
+        assertEquals(0x110000, cnt)
+    }
+}