8182297: jshell tool: pasting multiple lines of code truncated

Read input needs to be kept across ConsoleReader.readLine invocations unless consumed.

Reviewed-by: rfield, rfield

langtools/src/jdk.jshell/share/classes/jdk/internal/jshell/tool/ConsoleIOContext.java

@@ -1167,7 +1167,7 @@ class ConsoleIOContext extends IOContext {
 
         public TestTerminal(StopDetectingInputStream input) throws Exception {
             super(true);
-            setAnsiSupported(false);
+            setAnsiSupported(Boolean.getBoolean("test.terminal.ansi.supported"));
             setEchoEnabled(false);
             this.input = input;
             int h = DEFAULT_HEIGHT;

langtools/test/jdk/jshell/PasteAndMeasurementsUITest.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2017, 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
+ * @bug 8182297
+ * @summary Verify that pasting multi-line snippets works properly.
+ * @library /tools/lib
+ * @modules
+ *     java.base/java.lang:open
+ *     java.base/java.io:open
+ *     jdk.compiler/com.sun.tools.javac.api
+ *     jdk.compiler/com.sun.tools.javac.main
+ *     jdk.jshell/jdk.internal.jshell.tool.resources:open
+ *     jdk.jshell/jdk.jshell:open
+ * @build toolbox.ToolBox toolbox.JarTask toolbox.JavacTask
+ * @build Compiler UITesting
+ * @build PasteAndMeasurementsUITest
+ * @run testng/othervm PasteAndMeasurementsUITest
+ */
+
+import java.io.Console;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+
+import org.testng.annotations.Test;
+
+@Test
+public class PasteAndMeasurementsUITest extends UITesting {
+
+    public void testPrevNextSnippet() throws Exception {
+        System.setProperty(ANSI_SUPPORTED_PROPERTY, "true");
+        Field cons = System.class.getDeclaredField("cons");
+        cons.setAccessible(true);
+        Constructor console = Console.class.getDeclaredConstructor();
+        console.setAccessible(true);
+        cons.set(null, console.newInstance());
+        doRunTest((inputSink, out) -> {
+            inputSink.write("void test1() {\nSystem.err.println(1);\n}\n" + LOC +
+                            "void test2() {\nSystem.err.println(1);\n}\n" + LOC + LOC + LOC + LOC + LOC);
+            waitOutput(out,       "\u001b\\[6nvoid test1\\(\\) \\{\n" +
+                            "\u0006\u001b\\[6nSystem.err.println\\(1\\);\n" +
+                            "\u0006\u001b\\[6n\\}\n" +
+                            "\\|  created method test1\\(\\)\n" +
+                            "\u0005\u001b\\[6nvoid test2\\(\\) \\{\n" +
+                            "\u0006\u001b\\[6nSystem.err.println\\(1\\);\n" +
+                            "\u0006\u001b\\[6n\\}\n" +
+                            "\\|  created method test2\\(\\)\n" +
+                            "\u0005\u001b\\[6n");
+        });
+    }
+        private static final String ANSI_SUPPORTED_PROPERTY = "test.terminal.ansi.supported";
+        private static final String LOC = "\033[12;1R";
+}

langtools/test/jdk/jshell/UITesting.java

@@ -138,7 +138,7 @@ public class UITesting {
             while (true) {
                 Matcher m = expectedPattern.matcher(out);
                 if (m.find()) {
-                    out.delete(0, m.end() + 1);
+                    out.delete(0, m.end());
                     return ;
                 }
                 long e =  System.currentTimeMillis();