<?php

class AssertionsTest extends \PHPUnit\Framework\TestCase {
	/** @coversNothing */
	public function testAssertions() {
		// Expected values that can be confused with false
		$this->assertNull( false );
		$this->assertNull( 0 );
		$this->assertNull( 0.0 );
		$this->assertNull( '' );
		$this->assertFalse( null );
		$this->assertFalse( 0 );
		$this->assertFalse( '' );
		$this->assertSame( 0, null );
		$this->assertSame( 0, false );
		$this->assertSame( 0.0, '0' );
		$this->assertSame( 00.00, null );
		$this->assertSame( 0.0, null );
		$this->assertSame( 0., null );
		$this->assertSame( '', null );
		$this->assertSame( '', false );
		$this->assertSame( "", false );
		$this->assertSame( '0', 0.0 );

		// Expected values that can be confused with true
		$this->assertTrue( 1 );
		$this->assertSame( 1, true );
		$this->assertSame( 1.0, true );
		$this->assertSame( '1', true );
		$this->assertSame( '01.0', true );

		// Expected values that can be confused with floating point numbers
		$this->assertSame( ' 2.', 2 );
		$this->assertSame( ' .5', 0.5 );

		// Edge-cases
		$this->assertSame( null );$this->assertSame(
			'', ''
		);
		$this->assertSame( null /* oh dear */, null );

		// Stuff that should *not* be reported
		$this->assertEquals( 2, 2 );
		$this->assertEquals( 2.0, 2.0 );
		$this->assertEquals( '9a', '9a' );
		$this->assertEquals( " .a", ' .a' );

		// Changing these to assertNotSame() will make them *less* strict!
		$this->assertNotEquals( null, 1 );
		$this->assertNotEquals( 0, 1 );
		$this->assertNotEquals( 0.0, 1 );
		$this->assertNotEquals( '', 1 );
		$this->assertNotEquals( '0', 1 );
		$this->assertNotEquals( '0.0', 1 );
		$this->assertNotEquals( 1, 0 );
		$this->assertNotEquals( 1.0, 0 );
		$this->assertNotEquals( '1', 0 );
		$this->assertNotEquals( '1.0', 0 );

		// These are just confusing
		$this->assertTrue( true );
		$this->assertFalse( false );
		$this->assertTrue( true );
		$this->assertFalse( false );

		// Avoid assertEmpty
		$this->assertEmpty( [] );
	}
}