/*
 * Copyright (c) 2015, 2016, 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 8130450 8158906 8154374 8166400 8171892 8173807 8173848 8282434
 * @summary simple regression test
 * @build KullaTesting TestingInputStream
 * @run testng SimpleRegressionTest
 */


import java.util.List;

import javax.tools.Diagnostic;

import jdk.jshell.Snippet;
import jdk.jshell.VarSnippet;
import jdk.jshell.SnippetEvent;
import org.testng.annotations.Test;

import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertFalse;
import static org.testng.Assert.assertTrue;
import static jdk.jshell.Snippet.Status.OVERWRITTEN;
import static jdk.jshell.Snippet.SubKind.TEMP_VAR_EXPRESSION_SUBKIND;
import static jdk.jshell.Snippet.Status.VALID;
import org.testng.annotations.BeforeMethod;

@Test
public class SimpleRegressionTest extends KullaTesting {

    @BeforeMethod
    @Override
    public void setUp() {
        setUp(builder -> builder.executionEngine("local"));
    }

    public void testSnippetMemberAssignment() {
        assertEval("class C { int y; }");
        assertEval("C c = new C();");
        assertVarKeyMatch("c.y = 4;", true, "$1", TEMP_VAR_EXPRESSION_SUBKIND, "int", added(VALID));
    }

    public void testUserTakesTempVarName() {
        assertEval("int $2 = 4;");
        assertEval("String $1;");
        assertVarKeyMatch("1234;", true, "$3", TEMP_VAR_EXPRESSION_SUBKIND, "int", added(VALID));
    }

    public void testCompileThrow() {
        assertEvalException("throw new Exception();");
    }

    public void testMultiSnippetDependencies() {
        List<SnippetEvent> events = assertEval("int a = 3, b = a+a, c = b *100;",
                DiagCheck.DIAG_OK, DiagCheck.DIAG_OK,
                chain(added(VALID)),
                chain(added(VALID)),
                chain(added(VALID)));
        assertEquals(events.get(0).value(), "3");
        assertEquals(events.get(1).value(), "6");
        assertEquals(events.get(2).value(), "600");
        assertEval("c;", "600");
    }

    public void testLessThanParsing() {
        assertEval("int x = 3;", "3");
        assertEval("int y = 4;", "4");
        assertEval("int z = 5;", "5");
        assertEval("x < y", "true");
        assertEval("x < y;", "true");
        assertEval("x < y && y < z", "true");
    }

    public void testNotStmtCannotResolve() {
        assertDeclareFail("dfasder;", new ExpectedDiagnostic("compiler.err.cant.resolve.location", 0, 7, 0, -1, -1, Diagnostic.Kind.ERROR));
    }

    public void testNotStmtIncomparable() {
        assertDeclareFail("true == 5.0;", new ExpectedDiagnostic("compiler.err.incomparable.types", 0, 11, 5, -1, -1, Diagnostic.Kind.ERROR));
    }

    public void testStringAdd() {
        assertEval("String s = \"a\" + \"b\";", "\"ab\"");
    }

    public void testExprSanity() {
        assertEval("int x = 3;", "3");
        assertEval("int y = 4;", "4");
        assertEval("x + y;", "7");
        assertActiveKeys();
    }

    public void testGenericMethodCrash() {
        assertDeclareWarn1("<T> void f(T...a) {}", (ExpectedDiagnostic) null);
        Snippet sn = methodKey(assertEval("<R> R n(R x) { return x; }", added(VALID)));
        VarSnippet sne = varKey(assertEval("n(5)", added(VALID)));
        assertEquals(sne.typeName(), "Integer");
    }

    public void testLongRemoteStrings() { //8158906
        assertEval("String m(int x) { byte[] b = new byte[x]; for (int i = 0; i < x; ++i) b[i] = (byte) 'a'; return new String(b); }");
        boolean[] shut = new boolean[1];
        getState().onShutdown(j -> {
            shut[0] = true;
        });
        for (String len : new String[]{"12345", "64000", "65535", "65536", "120000"}) {
            List<SnippetEvent> el = assertEval("m(" + len + ");");
            assertFalse(shut[0], "JShell died with long string");
            assertEquals(el.size(), 1, "Excepted one event");
            assertTrue(el.get(0).value().length() > 10000,
                    "Expected truncated but long String, got: " + el.get(0).value().length());
        }
    }

    public void testLongRemoteJapaneseStrings() { //8158906
        assertEval("import java.util.stream.*;");
        assertEval("String m(int x) { return Stream.generate(() -> \"\u3042\").limit(x).collect(Collectors.joining()); }");
        boolean[] shut = new boolean[1];
        getState().onShutdown(j -> {
            shut[0] = true;
        });
        for (String len : new String[]{"12345", "21843", "21844", "21845", "21846", "64000", "65535", "65536", "120000"}) {
            List<SnippetEvent> el = assertEval("m(" + len + ");");
            assertFalse(shut[0], "JShell died with long string");
            assertEquals(el.size(), 1, "Excepted one event");
            assertTrue(el.get(0).value().length() > 10000,
                    "Expected truncated but long String, got: " + el.get(0).value().length());
        }
    }

    // 8130450
    public void testDuplicate() {
        Snippet snm = methodKey(assertEval("void mm() {}", added(VALID)));
        assertEval("void mm() {}",
                ste(MAIN_SNIPPET, VALID, VALID, false, null),
                ste(snm, VALID, OVERWRITTEN, false, MAIN_SNIPPET));
        Snippet snv = varKey(assertEval("boolean b;", added(VALID)));
        assertEval("boolean b;",
                ste(MAIN_SNIPPET, VALID, VALID, false, null),
                ste(snv, VALID, OVERWRITTEN, false, MAIN_SNIPPET));
    }

    public void testContextClassLoader() {
        assertEval("class C {}");
        assertEval("C.class.getClassLoader() == Thread.currentThread().getContextClassLoader()", "true");
    }

    public void testArrayRepresentation() {
        assertEval("new int[4]", "int[4] { 0, 0, 0, 0 }");
        assertEval("new int[0]", "int[0] {  }");
        assertEval("new byte[2]", "byte[2] { 0, 0 }");
        assertEval("new short[] { 1234, 4321 }", "short[2] { 1234, 4321 }");
        assertEval("new long[] { 123456789 }", "long[1] { 123456789 }");
        assertEval("new float[] { -23.5645f, 1.0101f }", "float[2] { -23.5645, 1.0101 }");
        assertEval("new double[] { 1/8, Math.PI }", "double[2] { 0.0, 3.141592653589793 }");
        assertEval("new String[] { \"hi\", \"low\", null }", "String[3] { \"hi\", \"low\", null }");
        assertEval("new char[] { 'a', 34, 77 }", "char[3] { 'a', '\"', 'M' }");
        assertEval("new boolean[] { false, true }", "boolean[2] { false, true }");
        assertEval("new int[][] { new int[] {44, 55}, new int[] {88,99}}",
                "int[2][] { int[2] { 44, 55 }, int[2] { 88, 99 } }");
        assertEval("new Object[] { \"howdy\", new int[] { 33, 44, 55 }, new String[] { \"up\", \"down\" }}",
                "Object[3] { \"howdy\", int[3] { 33, 44, 55 }, String[2] { \"up\", \"down\" } }");
    }

    public void testMultiDimArrayRepresentation() {
        assertEval("new int[3][1]",
                "int[3][] { int[1] { 0 }, int[1] { 0 }, int[1] { 0 } }");
        assertEval("new int[3][]",
                "int[3][] { null, null, null }");
        assertEval("new int[][] { new int[] {44}, new int[] {77, 88,99}}",
                "int[2][] { int[1] { 44 }, int[3] { 77, 88, 99 } }");
        assertEval("new String[3][1]",
                "String[3][] { String[1] { null }, String[1] { null }, String[1] { null } }");
        assertEval("class C { }");
        assertEval("new C[3][2]",
                "C[3][] { C[2] { null, null }, C[2] { null, null }, C[2] { null, null } }");
        assertEval("new boolean[2][1][3]",
                "boolean[2][][] { boolean[1][] { boolean[3] { false, false, false } }, boolean[1][] { boolean[3] { false, false, false } } }");
    }

    public void testStringRepresentation() {
        assertEval("\"A!\\rB!\"",
                   "\"A!\\rB!\"");
        assertEval("\"a\\bB\\tc\\nd\\fe\\rf\\\"g'\\\\h\"",
                   "\"a\\bB\\tc\\nd\\fe\\rf\\\"g'\\\\h\"");
        assertEval("\"\\141\\10B\\11c\\nd\\fe\\15f\\42g\\'\\134h\"",
                   "\"a\\bB\\tc\\nd\\fe\\rf\\\"g'\\\\h\"");
        assertEval("\"1234567890!@#$%^&*()-_=+qwertQWERT,./<>?;:[]{}\"",
                   "\"1234567890!@#$%^&*()-_=+qwertQWERT,./<>?;:[]{}\"");
        assertEval("\"AA\\1\\7\\35\\25\"",
                   "\"AA\\001\\007\\035\\025\"");
        assertEval("\"\"",
                   "\"\"");
        assertEval("(String)null",
                   "null");
        assertEval("\"\\u032Ea\"",
                   "\"\\u032Ea\"");
        assertEval("\"a\\u032Ea\"",
                   "\"a\u032Ea\"");
    }

    public void testCharRepresentation() {
        for (String s : new String[]{"'A'", "'Z'", "'0'", "'9'",
            "'a'", "'z'", "'*'", "'%'",
            "'\\b'", "'\\t'", "'\\n'", "'\\f'", "'\\r'",
            "'\"'", "'\\\''", "'\\\\'", "'\\007'", "'\\034'",}) {
            assertEval(s, s);
        }
        assertEval("'\\3'",
                "'\\003'");
        assertEval("'\\u001D'",
                "'\\035'");
        assertEval("\"a\\bb\\tc\\nd\\fe\\rf\\\"g'\\\\h\".charAt(1)",
                "'\\b'");
        assertEval("\"\\u032E\".charAt(0)",
                "'\\u032E'");
    }
}