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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is free software; you can redistribute it and/or modify it
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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).
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/*
 * This file is available under and governed by the GNU General Public
 * License version 2 only, as published by the Free Software Foundation.
 * However, the following notice accompanied the original version of this
 * file:
 *
 * Copyright (c) 2008-2012, Stephen Colebourne & Michael Nascimento Santos
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
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 *  * Neither the name of JSR-310 nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
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 */
package test.java.time.format;

import static java.time.temporal.ChronoField.NANO_OF_SECOND;
import static java.time.temporal.ChronoField.SECOND_OF_MINUTE;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;

import com.tngtech.java.junit.dataprovider.DataProvider;
import com.tngtech.java.junit.dataprovider.DataProviderRunner;
import com.tngtech.java.junit.dataprovider.UseDataProvider;
import java.text.ParsePosition;
import java.time.DateTimeException;
import java.time.LocalTime;
import java.time.format.DateTimeFormatter;
import java.time.temporal.TemporalAccessor;
import java.time.temporal.TemporalField;

import org.junit.Test;
import org.junit.runner.RunWith;
import test.java.time.temporal.MockFieldValue;

/**
 * Test FractionPrinterParser.
 */
@RunWith(DataProviderRunner.class)
public class TestFractionPrinterParser extends AbstractTestPrinterParser {

    private DateTimeFormatter getFormatter(TemporalField field, int minWidth, int maxWidth, boolean decimalPoint) {
        return builder.appendFraction(field, minWidth, maxWidth, decimalPoint).toFormatter(locale).withDecimalStyle(decimalStyle);
    }

    //-----------------------------------------------------------------------
    // print
    //-----------------------------------------------------------------------
    @Test(expected=DateTimeException.class)
    public void test_print_emptyCalendrical() throws Exception {
        getFormatter(NANO_OF_SECOND, 0, 9, true).formatTo(EMPTY_DTA, buf);
    }

    public void test_print_append() throws Exception {
        buf.append("EXISTING");
        getFormatter(NANO_OF_SECOND, 0, 9, true).formatTo(LocalTime.of(12, 30, 40, 3), buf);
        assertEquals(buf.toString(), "EXISTING.000000003");
    }

    //-----------------------------------------------------------------------
    @DataProvider
    public static Object[][] provider_nanos() {
        return new Object[][] {
            {0, 9, 0,           ""},
            {0, 9, 2,           ".000000002"},
            {0, 9, 20,          ".00000002"},
            {0, 9, 200,         ".0000002"},
            {0, 9, 2000,        ".000002"},
            {0, 9, 20000,       ".00002"},
            {0, 9, 200000,      ".0002"},
            {0, 9, 2000000,     ".002"},
            {0, 9, 20000000,    ".02"},
            {0, 9, 200000000,   ".2"},
            {0, 9, 1,           ".000000001"},
            {0, 9, 12,          ".000000012"},
            {0, 9, 123,         ".000000123"},
            {0, 9, 1234,        ".000001234"},
            {0, 9, 12345,       ".000012345"},
            {0, 9, 123456,      ".000123456"},
            {0, 9, 1234567,     ".001234567"},
            {0, 9, 12345678,    ".012345678"},
            {0, 9, 123456789,   ".123456789"},

            {1, 9, 0,           ".0"},
            {1, 9, 2,           ".000000002"},
            {1, 9, 20,          ".00000002"},
            {1, 9, 200,         ".0000002"},
            {1, 9, 2000,        ".000002"},
            {1, 9, 20000,       ".00002"},
            {1, 9, 200000,      ".0002"},
            {1, 9, 2000000,     ".002"},
            {1, 9, 20000000,    ".02"},
            {1, 9, 200000000,   ".2"},

            {2, 3, 0,           ".00"},
            {2, 3, 2,           ".000"},
            {2, 3, 20,          ".000"},
            {2, 3, 200,         ".000"},
            {2, 3, 2000,        ".000"},
            {2, 3, 20000,       ".000"},
            {2, 3, 200000,      ".000"},
            {2, 3, 2000000,     ".002"},
            {2, 3, 20000000,    ".02"},
            {2, 3, 200000000,   ".20"},
            {2, 3, 1,           ".000"},
            {2, 3, 12,          ".000"},
            {2, 3, 123,         ".000"},
            {2, 3, 1234,        ".000"},
            {2, 3, 12345,       ".000"},
            {2, 3, 123456,      ".000"},
            {2, 3, 1234567,     ".001"},
            {2, 3, 12345678,    ".012"},
            {2, 3, 123456789,   ".123"},

            {6, 6, 0,           ".000000"},
            {6, 6, 2,           ".000000"},
            {6, 6, 20,          ".000000"},
            {6, 6, 200,         ".000000"},
            {6, 6, 2000,        ".000002"},
            {6, 6, 20000,       ".000020"},
            {6, 6, 200000,      ".000200"},
            {6, 6, 2000000,     ".002000"},
            {6, 6, 20000000,    ".020000"},
            {6, 6, 200000000,   ".200000"},
            {6, 6, 1,           ".000000"},
            {6, 6, 12,          ".000000"},
            {6, 6, 123,         ".000000"},
            {6, 6, 1234,        ".000001"},
            {6, 6, 12345,       ".000012"},
            {6, 6, 123456,      ".000123"},
            {6, 6, 1234567,     ".001234"},
            {6, 6, 12345678,    ".012345"},
            {6, 6, 123456789,   ".123456"},
       };
    }

    @Test
    @UseDataProvider("provider_nanos")
    public void test_print_nanos(int minWidth, int maxWidth, int value, String result) throws Exception {
        getFormatter(NANO_OF_SECOND,  minWidth, maxWidth, true).formatTo(new MockFieldValue(NANO_OF_SECOND, value), buf);
        if (result == null) {
            fail("Expected exception");
        }
        assertEquals(buf.toString(), result);
    }

    @Test
    @UseDataProvider("provider_nanos")
    public void test_print_nanos_noDecimalPoint(int minWidth, int maxWidth, int value, String result) throws Exception {
        getFormatter(NANO_OF_SECOND,  minWidth, maxWidth, false).formatTo(new MockFieldValue(NANO_OF_SECOND, value), buf);
        if (result == null) {
            fail("Expected exception");
        }
        assertEquals(buf.toString(), (result.startsWith(".") ? result.substring(1) : result));
    }

    //-----------------------------------------------------------------------
    @DataProvider
    public static Object[][] provider_seconds() {
        return new Object[][] {
            {0, 9, 0,  ""},
            {0, 9, 3,  ".05"},
            {0, 9, 6,  ".1"},
            {0, 9, 9,  ".15"},
            {0, 9, 12, ".2"},
            {0, 9, 15, ".25"},
            {0, 9, 30, ".5"},
            {0, 9, 45, ".75"},

            {2, 2, 0,  ".00"},
            {2, 2, 3,  ".05"},
            {2, 2, 6,  ".10"},
            {2, 2, 9,  ".15"},
            {2, 2, 12, ".20"},
            {2, 2, 15, ".25"},
            {2, 2, 30, ".50"},
            {2, 2, 45, ".75"},
        };
    }

    @Test
    @UseDataProvider("provider_seconds")
    public void test_print_seconds(int minWidth, int maxWidth, int value, String result) throws Exception {
        getFormatter(SECOND_OF_MINUTE, minWidth, maxWidth, true).formatTo(new MockFieldValue(SECOND_OF_MINUTE, value), buf);
        if (result == null) {
            fail("Expected exception");
        }
        assertEquals(buf.toString(), result);
    }

    @Test
    @UseDataProvider("provider_seconds")
    public void test_print_seconds_noDecimalPoint(int minWidth, int maxWidth, int value, String result) throws Exception {
        getFormatter(SECOND_OF_MINUTE, minWidth, maxWidth, false).formatTo(new MockFieldValue(SECOND_OF_MINUTE, value), buf);
        if (result == null) {
            fail("Expected exception");
        }
        assertEquals(buf.toString(), (result.startsWith(".") ? result.substring(1) : result));
    }

    //-----------------------------------------------------------------------
    // parse
    //-----------------------------------------------------------------------
    @Test
    @UseDataProvider("provider_nanos")
    public void test_reverseParse(int minWidth, int maxWidth, int value, String result) throws Exception {
        ParsePosition pos = new ParsePosition(0);
        int expectedValue = fixParsedValue(maxWidth, value);
        TemporalAccessor parsed = getFormatter(NANO_OF_SECOND, minWidth, maxWidth, true).parseUnresolved(result, pos);
        assertEquals(pos.getIndex(), result.length());
        assertParsed(parsed, NANO_OF_SECOND, value == 0 && minWidth == 0 ? null : (long) expectedValue);
    }

    @Test
    @UseDataProvider("provider_nanos")
    public void test_reverseParse_noDecimalPoint(int minWidth, int maxWidth, int value, String result) throws Exception {
        ParsePosition pos = new ParsePosition((result.startsWith(".") ? 1 : 0));
        TemporalAccessor parsed = getFormatter(NANO_OF_SECOND, minWidth, maxWidth, false).parseUnresolved(result, pos);
        assertEquals(pos.getIndex(), result.length());
        int expectedValue = fixParsedValue(maxWidth, value);
        assertParsed(parsed, NANO_OF_SECOND, value == 0 && minWidth == 0 ? null : (long) expectedValue);
    }

    @Test
    @UseDataProvider("provider_nanos")
    public void test_reverseParse_followedByNonDigit(int minWidth, int maxWidth, int value, String result) throws Exception {
        ParsePosition pos = new ParsePosition(0);
        int expectedValue = fixParsedValue(maxWidth, value);
        TemporalAccessor parsed = getFormatter(NANO_OF_SECOND, minWidth, maxWidth, true).parseUnresolved(result + " ", pos);
        assertEquals(pos.getIndex(), result.length());
        assertParsed(parsed, NANO_OF_SECOND, value == 0 && minWidth == 0 ? null : (long) expectedValue);
    }

//    @Test(dataProvider="Nanos")
//    public void test_reverseParse_followedByNonDigit_noDecimalPoint(int minWidth, int maxWidth, int value, String result) throws Exception {
//        FractionPrinterParser pp = new FractionPrinterParser(NANO_OF_SECOND, minWidth, maxWidth, false);
//        int newPos = pp.parse(parseContext, result + " ", (result.startsWith(".") ? 1 : 0));
//        assertEquals(newPos, result.length());
//        int expectedValue = fixParsedValue(maxWidth, value);
//        assertParsed(parseContext, NANO_OF_SECOND, value == 0 && minWidth == 0 ? null : (long) expectedValue);
//    }

    @Test
    @UseDataProvider("provider_nanos")
    public void test_reverseParse_preceededByNonDigit(int minWidth, int maxWidth, int value, String result) throws Exception {
        ParsePosition pos = new ParsePosition(1);
        int expectedValue = fixParsedValue(maxWidth, value);
        TemporalAccessor parsed = getFormatter(NANO_OF_SECOND, minWidth, maxWidth, true).parseUnresolved(" " + result, pos);
        assertEquals(pos.getIndex(), result.length() + 1);
        assertParsed(parsed, NANO_OF_SECOND, value == 0 && minWidth == 0 ? null : (long) expectedValue);
    }

    private int fixParsedValue(int maxWidth, int value) {
        if (maxWidth < 9) {
            int power = (int) Math.pow(10, (9 - maxWidth));
            value = (value / power) * power;
        }
        return value;
    }

    @Test
    @UseDataProvider("provider_seconds")
    public void test_reverseParse_seconds(int minWidth, int maxWidth, int value, String result) throws Exception {
        ParsePosition pos = new ParsePosition(0);
        TemporalAccessor parsed = getFormatter(SECOND_OF_MINUTE, minWidth, maxWidth, true).parseUnresolved(result, pos);
        assertEquals(pos.getIndex(), result.length());
        assertParsed(parsed, SECOND_OF_MINUTE, value == 0 && minWidth == 0 ? null : (long) value);
    }

    private void assertParsed(TemporalAccessor parsed, TemporalField field, Long value) {
        if (value == null) {
            assertEquals(parsed.isSupported(field), false);
        } else {
            assertEquals(parsed.isSupported(field), true);
            assertEquals(parsed.getLong(field), (long) value);
        }
    }

    //-----------------------------------------------------------------------
    @DataProvider
    public static Object[][] provider_parseNothing() {
        return new Object[][] {
            {NANO_OF_SECOND, 3, 6, true, "", 0, 0},
            {NANO_OF_SECOND, 3, 6, true, "A", 0, 0},
            {NANO_OF_SECOND, 3, 6, true, ".", 0, 1},
            {NANO_OF_SECOND, 3, 6, true, ".5", 0, 1},
            {NANO_OF_SECOND, 3, 6, true, ".51", 0, 1},
            {NANO_OF_SECOND, 3, 6, true, ".A23456", 0, 1},
            {NANO_OF_SECOND, 3, 6, true, ".1A3456", 0, 1},
        };
    }

    @Test
    @UseDataProvider("provider_parseNothing")
    public void test_parse_nothing(TemporalField field, int min, int max, boolean decimalPoint, String text, int pos, int expected) {
        ParsePosition ppos = new ParsePosition(pos);
        TemporalAccessor parsed = getFormatter(field, min, max, decimalPoint).parseUnresolved(text, ppos);
        assertEquals(ppos.getErrorIndex(), expected);
        assertEquals(parsed, null);
    }

    //-----------------------------------------------------------------------
    public void test_toString() throws Exception {
        assertEquals(getFormatter(NANO_OF_SECOND, 3, 6, true).toString(), "Fraction(NanoOfSecond,3,6,DecimalPoint)");
    }

    public void test_toString_noDecimalPoint() throws Exception {
        assertEquals(getFormatter(NANO_OF_SECOND, 3, 6, false).toString(), "Fraction(NanoOfSecond,3,6)");
    }

}
