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package org.openjdk.jmc.common.version;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

import org.junit.Test;

public class JavaVersionTest {

	@Test
	public void testJava9NewShortGEQJava9OldVersion() {
		JavaVersion ver1 = new JavaVersion("9");
		JavaVersion ver2 = new JavaVersion("1.9.foo");

		assertTrue(ver1.isGreaterOrEqualThan(ver2));
	}

	@Test
	public void testJava9NewShortEQJava9NewLongSameVersion() {
		JavaVersion version9 = new JavaVersion("9-ea");
		JavaVersion version9000 = new JavaVersion("9.0.0.0-ea");

		assertTrue(version9000.equals(version9));
	}

	@Test
	public void testJava9NewShortWithExtraEQJava9NewLongSameVersion() {
		JavaVersion version190 = new JavaVersion("9-ea+19-BR-435345");
		JavaVersion version900 = new JavaVersion("9.0.0.0-ea");

		assertTrue(version900.equals(version190));
	}

	@Test
	public void testJava9NewWithExtraGEQJava9OldVersion() {
		JavaVersion version913 = new JavaVersion("9.1.3.0");
		JavaVersion version190 = new JavaVersion("1.9.0-ea+19-BR-435345");

		assertTrue(version913.isGreaterOrEqualThan(version190));
	}

	/*
	 * NOTE: This test does not really have to pass when the new Java 9 version is committed, but
	 * since we are using this for testing before that happens, we need this to work.
	 */
	@Test
	public void testJava9OldVersionGEQJava9NewWithExtra() {
		JavaVersion version913 = new JavaVersion("9.1.3.0");
		JavaVersion version192 = new JavaVersion("1.9.2-ea+19-BR-435345");

		assertTrue(version192.isGreaterOrEqualThan(version913));
	}

	@Test
	public void testJava9LongVersionisGreaterOrEqualsJava9ShortVersion() {
		JavaVersion version9 = new JavaVersion("9");
		JavaVersion version921 = new JavaVersion("9.2.1.0");

		assertTrue(version921.isGreaterOrEqualThan(version9));
	}

	@Test
	public void testJava9isGreaterOrEqualsVersion() {
		JavaVersion version913 = new JavaVersion("9.1.3.0-ea");
		JavaVersion version921 = new JavaVersion("9.2.1.0");

		assertTrue(version921.isGreaterOrEqualThan(version913));
	}

	@Test
	public void testJava9isGreaterOrEqualsVersionEA() {
		JavaVersion version921ea = new JavaVersion("9.2.1.0-ea");
		JavaVersion version921 = new JavaVersion("9.2.1.0");

		assertTrue(version921.isGreaterOrEqualThan(version921ea));
		assertTrue(!version921ea.isGreaterOrEqualThan(version921));
	}

	@Test
	public void testGreaterOrEqualsMediumVsLongVersion() {
		JavaVersion version123 = new JavaVersion("1.2.3");
		JavaVersion version12245 = new JavaVersion("1.2.2.4.5");

		assertTrue(version123.isGreaterOrEqualThan(version12245));
	}

	@Test
	public void testGreaterOrEqualsLongVsMediumVersion() {
		JavaVersion version12345 = new JavaVersion("1.2.3.4.5");
		JavaVersion version12 = new JavaVersion("1.2");

		assertTrue(version12345.isGreaterOrEqualThan(version12));
	}

	@Test
	public void testJava9isGreaterOrEqualsThanJava8Version() {
		JavaVersion version903 = new JavaVersion("9.0.3.0-ea");
		JavaVersion version8u40 = new JavaVersion("1.8.0_40");

		assertTrue(version903.isGreaterOrEqualThan(version8u40));
	}

	@Test
	public void testGEQ() {
		JavaVersion version16 = new JavaVersion("1.6.0_14ea");
		JavaVersion version17 = new JavaVersion("1.7.0_0");

		assertTrue(version17.isGreaterOrEqualThan(version16));
		assertFalse(version16.isGreaterOrEqualThan(version17));
		assertTrue(version16.isGreaterOrEqualThan(version16));
		assertTrue(version17.equals(version17));
	}

	@Test
	public void testGEQJava7EA() {
		JavaVersion version17ea = new JavaVersion("1.7.0_0ea");
		JavaVersion version17 = new JavaVersion("1.7.0_0");

		assertTrue(version17.isGreaterOrEqualThan(version17ea));
		assertFalse(version17ea.isGreaterOrEqualThan(version17));
	}

	@Test
	public void testGEQWithMicro() {
		JavaVersion version142 = new JavaVersion("1.4.2_14");
		JavaVersion version131 = new JavaVersion("1.3.1_67");

		assertTrue(version142.isGreaterOrEqualThan(version131));
		assertFalse(version131.isGreaterOrEqualThan(version142));
		assertTrue(version131.isGreaterOrEqualThan(version131));
		assertTrue(version142.equals(version142));
	}

	@Test
	public void testGEQCropped() {
		JavaVersion version17 = new JavaVersion("1.7");
		JavaVersion version17u12 = new JavaVersion("1.7.0_12");

		assertTrue(version17u12.isGreaterOrEqualThan(version17));
		assertFalse(version17u12.equals(version17));
	}

	@Test
	public void testIsReverseNumbers() {
		JavaVersion version17u13 = new JavaVersion("1.7.12_13ea");
		JavaVersion version17u31 = new JavaVersion("1.7.12_31");

		assertTrue(version17u31.isGreaterOrEqualThan(version17u13));
		assertFalse(version17u31.equals(version17u13));
	}

	@Test
	public void testOldVersionShortAndLongEquals() {
		JavaVersion version17u0 = new JavaVersion("1.7.0_0");
		JavaVersion version17 = new JavaVersion("1.7");

		assertTrue(version17u0.equals(version17));
	}
	
	@Test
	public void testNullStringArgument() {
		JavaVersion nullVersion = new JavaVersion((String) null);
		assertEquals(JavaVersion.UNKNOWN, nullVersion.getMajorVersion());
	}
}