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/*

 * @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;

@Test

public class SimpleRegressionTest extends KullaTesting {

    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 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 } } }");

    }

}