package moj;

import static org.junit.Assert.*;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import moj.mocks.*;

import org.junit.*;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;

import com.topcoder.shared.language.JavaLanguage;
import com.topcoder.shared.problem.DataType;
import com.topcoder.shared.problem.InvalidTypeException;

@RunWith(Parameterized.class)
public class JavaParameterTest {
    private String typename, value, expected;

    public JavaParameterTest(String typename, String varval, String expected) {
        this.typename = typename;
        this.value = varval;
        this.expected = expected;
    }

    JavaHarnessGenerator generator;
    ArrayList<String> code;

    @Before public void setUp() {
        generator = new JavaHarnessGenerator(
                new ProblemComponentModelMock(),
                JavaLanguage.JAVA_LANGUAGE,
                new PreferencesMock()
                );
        code = new ArrayList<String>();
    }

    static String compressSpaceBeforeEquals(String str) {
        return str.replaceFirst("\\s*=", " =").trim();
    }

    @Parameters
    public static List<Object[]> data() {
        Object[][] data = new Object[][] { 
                {"int", "-2147483648", "int var = -2147483648;"},

                {"String", "\"test string\"", "String var = \"test string\";"},
                {"String", "\"   multiple  spaces  \"", "String var = \"   multiple  spaces  \";"},
                {"String", "\"  a  =  3  \"", "String var = \"  a  =  3  \";"},

                {"double", "1.345e08", "double var = 1.345e08;"},

                {"long", "123",         "long var = 123;"},
                {"long", "-9999999999", "long var = -9999999999L;"},
                {"long", "2147483648",  "long var = 2147483648L;"},

                {"int[]", "{-2147483648, 2147483647, 0, -1, 555}", "int[] var = {-2147483648, 2147483647, 0, -1, 555};"},
                {"int[]", "{}",  "int[] var = {};"},

                {"String[]", "{\"a\",\n \"\",\n \"test test\"}", "String[] var = {\"a\",\n \"\",\n \"test test\"};"},
                {"String[]", "{\"spaces  space\", \"a   a\"}", "String[] var = {\"spaces  space\", \"a   a\"};"},

                {"double[]", "{ 1e9, -3.e-012, -4, 5 }", "double[] var = { 1e9, -3.e-012, -4, 5 };"},

                {"long[]", "{ 0, -1, 1, 2147483648,\n-2147483649, 9223372036854775807, -9223372036854775808}", "long[] var = {0, -1, 1, 2147483648L, -2147483649L, 9223372036854775807L, -9223372036854775808L};"},
        };
        return Arrays.asList(data);
    }

    @Test public void test() throws InvalidTypeException {
        DataType dt = DataTypeFactoryMock.getDataType(this.typename);
        generator.generateParameter(code, dt, "var", this.value, false);
        String result = compressSpaceBeforeEquals(code.get(0).toString());
        assertEquals(this.expected, result);
    }
}