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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 *

 * 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,

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 *

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 */

/*

 * @test

 * @bug 8166744

 * @summary Test Completion

 * @modules jdk.internal.le/jdk.internal.jline.extra

 *          jdk.jshell/jdk.internal.jshell.tool:+open

 * @build HistoryTest

 * @run testng HistoryTest

 */

import java.lang.reflect.Field;

import java.util.Locale;

import java.util.logging.Level;

import java.util.logging.Logger;

import jdk.internal.jline.extra.EditingHistory;

import org.testng.annotations.Test;

import jdk.internal.jshell.tool.JShellTool;

import jdk.internal.jshell.tool.JShellToolBuilder;

import static org.testng.Assert.*;

public class HistoryTest extends ReplToolTesting {

    private JShellTool repl;

    @Override

    protected void testRawRun(Locale locale, String[] args) {

        // turn on logging of launch failures

        Logger.getLogger("jdk.jshell.execution").setLevel(Level.ALL);

        repl = ((JShellToolBuilder) builder(locale))

                .rawTool();

        try {

            repl.start(args);

        } catch (Exception ex) {

            fail("Repl tool died with exception", ex);

        }

    }

    @Test

    public void testHistory() {

        test(

             a -> {if (!a) setCommandInput("void test() {\n");},

             a -> {if (!a) setCommandInput("    System.err.println(1);\n");},

             a -> {if (!a) setCommandInput("    System.err.println(1);\n");},

             a -> {assertCommand(a, "} //test", "|  created method test()");},

             a -> {

                 if (!a) {

                     try {

                         previousAndAssert(getHistory(), "} //test");

                         previousSnippetAndAssert(getHistory(), "void test() {");

                     } catch (Exception ex) {

                         throw new IllegalStateException(ex);

                     }

                 }

                 assertCommand(a, "int dummy;", "dummy ==> 0");

             });

        test(

             a -> {if (!a) setCommandInput("void test2() {\n");},

             a -> {assertCommand(a, "} //test2", "|  created method test2()");},

             a -> {

                 if (!a) {

                     try {

                         previousAndAssert(getHistory(), "} //test2");

                         previousSnippetAndAssert(getHistory(), "void test2() {");

                         previousSnippetAndAssert(getHistory(), "/debug 0"); //added by test framework

                         previousSnippetAndAssert(getHistory(), "/exit");

                         previousSnippetAndAssert(getHistory(), "int dummy;");

                         previousSnippetAndAssert(getHistory(), "void test() {");

                     } catch (Exception ex) {

                         throw new IllegalStateException(ex);

                     }

                 }

                 assertCommand(a, "int dummy;", "dummy ==> 0");

             });

    }

    @Test

    public void test8166744() {

        test(

             a -> {if (!a) setCommandInput("class C {\n");},

             a -> {if (!a) setCommandInput("void f() {\n");},

             a -> {if (!a) setCommandInput("}\n");},

             a -> {assertCommand(a, "}", "|  created class C");},

             a -> {

                 if (!a) {

                     try {

                         previousAndAssert(getHistory(), "}");

                         previousAndAssert(getHistory(), "}");

                         previousAndAssert(getHistory(), "void f() {");

                         previousAndAssert(getHistory(), "class C {");

                         getHistory().add("class C{");

                     } catch (Exception ex) {

                         throw new IllegalStateException(ex);

                     }

                 }

                 assertCommand(a, "int dummy;", "dummy ==> 0");

             });

        test(

             a -> {if (!a) setCommandInput("class C {\n");},

             a -> {if (!a) setCommandInput("void f() {\n");},

             a -> {if (!a) setCommandInput("}\n");},

             a -> {assertCommand(a, "}", "|  created class C");},

             a -> {

                 if (!a) {

                     try {

                         previousSnippetAndAssert(getHistory(), "class C {");

                         getHistory().add("class C{");

                     } catch (Exception ex) {

                         throw new IllegalStateException(ex);

                     }

                 }

                 assertCommand(a, "int dummy;", "dummy ==> 0");

             });

    }

    private EditingHistory getHistory() throws Exception {

        Field input = repl.getClass().getDeclaredField("input");

        input.setAccessible(true);

        Object console = input.get(repl);

        Field history = console.getClass().getDeclaredField("history");

        history.setAccessible(true);

        return (EditingHistory) history.get(console);

    }

    private void previousAndAssert(EditingHistory history, String expected) {

        assertTrue(history.previous());

        assertEquals(history.current().toString(), expected);

    }

    private void previousSnippetAndAssert(EditingHistory history, String expected) {

        assertTrue(history.previousSnippet());

        assertEquals(history.current().toString(), expected);

    }

}