Ruby flavor: Add Ruby regex tests for trufferuby issue 2204

regex/src/com.oracle.truffle.regex.test/src/com/oracle/truffle/regex/tregex/test/RubyTests.java

@@ -0,0 +1,74 @@
+/*
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+ */
+package com.oracle.truffle.regex.tregex.test;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class RubyTests extends RegexTestBase {
+
+    @Override
+    String getEngineOptions() {
+        return "Flavor=Ruby";
+    }
+
+    @Test
+    public void gr28693() {
+        test("\\A([0-9]+)_([_a-z0-9]*)\\.?([_a-z0-9]*)?\\.rb\\z", "", "20190116152522_enable_postgis_extension.rb", 0, true, 0, 42, 0, 14, 15, 39, 39, 39);
+        test("\\A([0-9]+)_([_a-z0-9]*)\\.?([_a-z0-9]*)?\\.rb\\z", "", "20190116152523_create_schools.rb", 0, true, 0, 32, 0, 14, 15, 29, 29, 29);
+        test("^0{2}?(00)?(44)?(0)?([1-357-9]\\d{9}|[18]\\d{8}|8\\d{6})$", "", "07123456789", 0, true, 0, 11, -1, -1, -1, -1, 0, 1, 1, 11);
+        test("^0{2}?(00)?(44)(0)?([1-357-9]\\d{9}|[18]\\d{8}|8\\d{6})$", "", "447123456789", 0, true, 0, 12, -1, -1, 0, 2, -1, -1, 2, 12);
+        test("^0{2}?(00)?44", "", "447123456789", 0, true, 0, 2, -1, -1);
+
+        Assert.assertEquals(5,
+                        compileRegex("\n" +
+                                        "      ^\n" +
+                                        "      ([ ]*) # indentations\n" +
+                                        "      (.+) # key\n" +
+                                        "      (?::(?=(?:\\s|$))) # :  (without the lookahead the #key includes this when : is present in value)\n" +
+                                        "      [ ]?\n" +
+                                        "      (['\"]?) # optional opening quote\n" +
+                                        "      (.*) # value\n" +
+                                        "      \\3 # matching closing quote\n" +
+                                        "      $\n" +
+                                        "    ", "x").getMember("groupCount").asInt());
+    }
+}