8016846: Pattern.splitAsStream tests required

Reviewed-by: alanb, psandoz
Contributed-by: NBen Evans <benjamin.john.evans@gmail.com>

test/java/util/regex/PatternTest.java

+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test
+ * @summary Unit tests for wrapping classes should delegate to default methods
+ * @library ../stream/bootlib
+ * @build java.util.stream.OpTestCase
+ * @run testng/othervm PatternTest
+ */
+
+import org.testng.annotations.DataProvider;
+import org.testng.annotations.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Supplier;
+import java.util.regex.Pattern;
+import java.util.stream.LambdaTestHelpers;
+import java.util.stream.OpTestCase;
+import java.util.stream.Stream;
+import java.util.stream.TestData;
+
+@Test
+public class PatternTest extends OpTestCase {
+
+    @DataProvider(name = "Stream<String>")
+    public static Object[][] makeStreamTestData() {
+        List<Object[]> data = new ArrayList<>();
+
+        String description = "";
+        String input = "awgqwefg1fefw4vssv1vvv1";
+        Pattern pattern = Pattern.compile("4");
+        List<String> expected = new ArrayList<>();
+        expected.add("awgqwefg1fefw");
+        expected.add("vssv1vvv1");
+
+        // Must match the type signature of the consumer of this data, testStrings
+        // String, String, Pattern, List<String>
+        data.add(new Object[]{description, input, pattern, expected});
+
+        input = "afbfq\u00a3abgwgb\u00a3awngnwggw\u00a3a\u00a3ahjrnhneerh";
+        pattern = Pattern.compile("\u00a3a");
+        expected = new ArrayList<>();
+        expected.add("afbfq");
+        expected.add("bgwgb");
+        expected.add("wngnwggw");
+        expected.add("");
+        expected.add("hjrnhneerh");
+
+        data.add(new Object[]{description, input, pattern, expected});
+
+
+        input = "awgqwefg1fefw4vssv1vvv1";
+        pattern = Pattern.compile("1");
+        expected = new ArrayList<>();
+        expected.add("awgqwefg");
+        expected.add("fefw4vssv");
+        expected.add("vvv");
+
+        data.add(new Object[]{description, input, pattern, expected});
+
+
+        input = "a\u4ebafg1fefw\u4eba4\u9f9cvssv\u9f9c1v\u672c\u672cvv";
+        pattern = Pattern.compile("1");
+        expected = new ArrayList<>();
+        expected.add("a\u4ebafg");
+        expected.add("fefw\u4eba4\u9f9cvssv\u9f9c");
+        expected.add("v\u672c\u672cvv");
+
+        data.add(new Object[]{description, input, pattern, expected});
+
+
+        input = "1\u56da23\u56da456\u56da7890";
+        pattern = Pattern.compile("\u56da");
+        expected = new ArrayList<>();
+        expected.add("1");
+        expected.add("23");
+        expected.add("456");
+        expected.add("7890");
+
+        data.add(new Object[]{description, input, pattern, expected});
+
+
+        input = "1\u56da23\u9f9c\u672c\u672c\u56da456\u56da\u9f9c\u672c7890";
+        pattern = Pattern.compile("\u56da");
+        expected = new ArrayList<>();
+        expected.add("1");
+        expected.add("23\u9f9c\u672c\u672c");
+        expected.add("456");
+        expected.add("\u9f9c\u672c7890");
+
+        data.add(new Object[]{description, input, pattern, expected});
+
+
+        input = "";
+        pattern = Pattern.compile("\u56da");
+        expected = new ArrayList<>();
+
+        data.add(new Object[]{description, input, pattern, expected});
+
+
+        description = "Multiple separators";
+        input = "This is,testing: with\tdifferent separators.";
+        pattern = Pattern.compile("[ \t,:.]");
+        expected = new ArrayList<>();
+        expected.add("This");
+        expected.add("is");
+        expected.add("testing");
+        expected.add("");
+        expected.add("with");
+        expected.add("different");
+        expected.add("separators");
+
+        data.add(new Object[] {description, input, pattern, expected});
+        return data.toArray(new Object[0][]);
+    }
+
+    @Test(dataProvider = "Stream<String>")
+    public void testStrings(String description, String input, Pattern pattern, List<String> expected) {
+        Supplier<Stream<String>> ss =  () -> pattern.splitAsStream(input);
+        withData(TestData.Factory.ofSupplier(description, ss))
+                .stream(LambdaTestHelpers.identity())
+                .expectedResult(expected)
+                .exercise();
+    }
+}