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 * 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

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 * You should have received a copy of the GNU General Public License version

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package org.openjdk.tests.javac;

import org.openjdk.tests.shapegen.*;

import com.sun.source.util.JavacTask;

import com.sun.tools.javac.util.Pair;

import java.io.IOException;

import java.net.URI;

import java.util.Arrays;

import java.util.ArrayList;

import java.util.Collection;

import java.util.List;

import javax.tools.Diagnostic;

import javax.tools.JavaCompiler;

import javax.tools.JavaFileObject;

import javax.tools.SimpleJavaFileObject;

import javax.tools.StandardJavaFileManager;

import javax.tools.ToolProvider;

import org.testng.annotations.AfterSuite;

import org.testng.annotations.Test;

import org.testng.annotations.BeforeSuite;

import org.testng.annotations.DataProvider;

import static org.testng.Assert.*;

public class FDTest {

    public enum TestKind {

        POSITIVE,

        NEGATIVE;

        Collection<Hierarchy> getHierarchy(HierarchyGenerator hg) {

            return this == POSITIVE ?

                    hg.getOK() : hg.getErr();

        }

    }

    public static JavaCompiler comp;

    public static StandardJavaFileManager fm;

    @BeforeSuite

    static void init() {

        // create default shared JavaCompiler - reused across multiple

        // compilations

        comp = ToolProvider.getSystemJavaCompiler();

        fm = comp.getStandardFileManager(null, null, null);

    }

    @AfterSuite

    static void teardown() throws IOException {

        fm.close();

    }

    public static void main(String[] args) throws Exception {

        init();

        for (Pair<TestKind,Hierarchy> fdtest : generateCases()) {

            runTest(fdtest.fst, fdtest.snd, comp, fm);

        }

        teardown();

    }

    @Test(dataProvider = "fdCases")

    public void testOneCase(TestKind tk, Hierarchy hs)

            throws Exception {

        FDTest.runTest(tk, hs, comp, fm);

    }

    @DataProvider(name = "fdCases")

    public Object[][] caseGenerator() {

        List<Pair<TestKind, Hierarchy>> cases = generateCases();

        Object[][] fdCases = new Object[cases.size()][];

        for (int i = 0; i < cases.size(); ++i) {

            fdCases[i] = new Object[2];

            fdCases[i][0] = cases.get(i).fst;

            fdCases[i][1] = cases.get(i).snd;

        }

        return fdCases;

    }

    public static List<Pair<TestKind, Hierarchy>> generateCases() {

        ArrayList<Pair<TestKind,Hierarchy>> list = new ArrayList<>();

        HierarchyGenerator hg = new HierarchyGenerator();

        for (TestKind tk : TestKind.values()) {

            for (Hierarchy hs : tk.getHierarchy(hg)) {

            }

        }

        return list;

    }

    public static void runTest(TestKind tk, Hierarchy hs,

            JavaCompiler comp, StandardJavaFileManager fm) throws Exception {

        new FDTest(tk, hs).run(comp, fm);

    }

    TestKind tk;

    Hierarchy hs;

    DefenderTestSource source;

    DiagnosticChecker diagChecker;

    public FDTest() {}

    FDTest(TestKind tk, Hierarchy hs) {

        this.tk = tk;

        this.hs = hs;

        this.source = new DefenderTestSource();

        this.diagChecker = new DiagnosticChecker();

    }

    void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception {

        JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker,

                null, null, Arrays.asList(source));

        try {

            ct.analyze();

        } catch (Throwable ex) {

            fail("Error thrown when analyzing the following source:\n" + source.getCharContent(true));

        }

        check();

    }

    void check() {

        boolean errorExpected = tk == TestKind.NEGATIVE;

        if (errorExpected != diagChecker.errorFound) {

            fail("problem in source: \n" +

                 "\nerror found = " + diagChecker.errorFound +

                 "\nerror expected = " + errorExpected +

                 "\n" + dumpHierarchy() +

                 "\n" + source.getCharContent(true));

        }

    }

    String dumpHierarchy() {

        StringBuilder buf = new StringBuilder();

        buf.append("root = " + hs.root + "\n");

        for (ClassCase cc : hs.all) {

            buf.append("  class name = " + cc.getName() + "\n");

            buf.append("    class OK = " + cc.get_OK() + "\n");

            buf.append("    prov = " + cc.get_mprov() + "\n");

        }

        return buf.toString();

    }

    class DefenderTestSource extends SimpleJavaFileObject {

        String source;

        public DefenderTestSource() {

            super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);

            StringBuilder buf = new StringBuilder();

            List<ClassCase> defaultRef = new ArrayList<>();

            for (ClassCase cc : hs.all) {

                Hierarchy.genClassDef(buf, cc, null, defaultRef);

            }

            source = buf.toString();

        }

        @Override

        public CharSequence getCharContent(boolean ignoreEncodingErrors) {

            return source;

        }

    }

    static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> {

        boolean errorFound;

        public void report(Diagnostic<? extends JavaFileObject> diagnostic) {

            if (diagnostic.getKind() == Diagnostic.Kind.ERROR) {

                errorFound = true;

            }

        }

    }

}