HashMapTest.php
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HashMapTest.php
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	<?php

	namespace Keruald\OmniTools\Tests\Collections;

	use Keruald\OmniTools\Collections\HashMap;

	use PHPUnit\Framework\TestCase;

	use InvalidArgumentException;
	use IteratorAggregate;
	use Traversable;

	class HashMapTest extends TestCase {

	///
	/// Test set up
	///

	private HashMap $map;

	const MAP_CONTENT = [
	// Some sci-fi civilizations and author
	"The Culture" => "Iain Banks",
	"Radchaai Empire" => "Ann Leckie",
	"Barrayar" => "Lois McMaster Bujold",
	"Hainish" => "Ursula K. Le Guin",
	];

	protected function setUp () : void {
	$this->map = new HashMap(self::MAP_CONTENT);
	}

	///
	/// Constructors
	///

	public function testConstructorWithArray () {
	$this->assertSame(self::MAP_CONTENT, $this->map->toArray());
	}

	public function testConstructorWithTraversable () {
	$expected = [
	"color" => "blue",
	"material" => "glass",
	"shape" => "sphere",
	];

	$iterable = new class implements IteratorAggregate {
	function getIterator () : Traversable {
	yield "color" => "blue";
	yield "material" => "glass";
	yield "shape" => "sphere";
	}
	};

	$map = new HashMap($iterable);
	$this->assertSame($expected, $map->toArray());
	}

	public function testFrom () {
	$map = HashMap::from(self::MAP_CONTENT);
	$this->assertSame(self::MAP_CONTENT, $map->toArray());
	}

	///
	/// Getters and setters
	///

	public function testGet () {
	$this->assertSame("Iain Banks", $this->map->get("The Culture"));
	}

	public function testGetWhenKeyIsNotFound () {
	$this->expectException(InvalidArgumentException::class);

	$this->map->get("Quuxians");
	}

	public function testGetOr () {
	$actual = $this->map
	->getOr("The Culture", "Another author");

	$this->assertSame("Iain Banks", $actual);
	}

	public function testGetOrWhenKeyIsNotFound () {
	$actual = $this->map
	->getOr("Quuxians", "Another author");

	$this->assertSame("Another author", $actual);
	}

	public function testSetWithNewKey () {
	$this->map->set("Thélème", "François Rabelais");

	$this->assertSame("François Rabelais",
	$this->map->get("Thélème"));
	}

	public function testSetWithExistingKey () {
	$this->map->set("The Culture", "Iain M. Banks");

	$this->assertSame("Iain M. Banks",
	$this->map->get("The Culture"));
	}

	public function testHas () {
	$this->assertTrue($this->map->has("The Culture"));
	$this->assertFalse($this->map->has("Not existing key"));
	}

	public function testContains () {
	$this->assertTrue($this->map->contains("Iain Banks"));
	$this->assertFalse($this->map->contains("Not existing value"));
	}

	///
	/// Collection method
	///

	public function testCount () {
	$this->assertSame(4, $this->map->count());
	}

	public function testClear () {
	$this->map->clear();
	$this->assertSame(0, $this->map->count());
	}

	public function testMerge () {
	$iterable = [
	"The Culture" => "Iain M. Banks", // existing key
	"Thélème" => "François Rabelais", // new key
	];

	$expected = [
	// The original map
	"The Culture" => "Iain Banks", // Old value should be kept
	"Radchaai Empire" => "Ann Leckie",
	"Barrayar" => "Lois McMaster Bujold",
	"Hainish" => "Ursula K. Le Guin",

	// The entries with a new key
	"Thélème" => "François Rabelais",
	];

	$this->map->merge($iterable);
	$this->assertSame($expected, $this->map->toArray());
	}

	public function testUpdate () {
	$iterable = [
	"The Culture" => "Iain M. Banks", // existing key
	"Thélème" => "François Rabelais", // new key
	];

	$expected = [
	// The original map
	"The Culture" => "Iain M. Banks", // Old value should be updated
	"Radchaai Empire" => "Ann Leckie",
	"Barrayar" => "Lois McMaster Bujold",
	"Hainish" => "Ursula K. Le Guin",

	// The entries with a new key
	"Thélème" => "François Rabelais",
	];

	$this->map->update($iterable);
	$this->assertSame($expected, $this->map->toArray());
	}

	public function testToArray () {
	$this->assertEquals(self::MAP_CONTENT, $this->map->toArray());
	}

	///
	/// High order functions
	///

	public function testMap () {
	$callback = function ($value) {
	return "author='" . $value . "'";
	};

	$expected = [
	"The Culture" => "author='Iain Banks'",
	"Radchaai Empire" => "author='Ann Leckie'",
	"Barrayar" => "author='Lois McMaster Bujold'",
	"Hainish" => "author='Ursula K. Le Guin'",
	];

	$actual = $this->map->map($callback)->toArray();
	$this->assertEquals($expected, $actual);
	}

	public function testMapKeys () {
	$callback = function ($key) {
	return "civ::" . $key;
	};

	$expected = [
	// Some sci-fi civilizations and author
	"civ::The Culture" => "Iain Banks",
	"civ::Radchaai Empire" => "Ann Leckie",
	"civ::Barrayar" => "Lois McMaster Bujold",
	"civ::Hainish" => "Ursula K. Le Guin",
	];

	$actual = $this->map->mapKeys($callback)->toArray();
	$this->assertEquals($expected, $actual);
	}

	public function testFilter () {
	// Let's filter to keep names with 3 parts or more

	$callback = function ($value) : bool {
	return str_word_count($value) > 2;
	};

	$expected = [
	// Some sci-fi civilizations and author
	"Barrayar" => "Lois McMaster Bujold",
	"Hainish" => "Ursula K. Le Guin",
	];

	$actual = $this->map->filter($callback)->toArray();
	$this->assertEquals($expected, $actual);
	}

	public function testFilterWithKeyValueCallback () {
	// Let's find civilization AND author with e inside

	$expected = [
	// Some sci-fi civilizations and author
	"Radchaai Empire" => "Ann Leckie",
	];

	$callback = function ($key, $value) : bool {
	return str_contains($key, "e") && str_contains($value, "e");
	};

	$actual = $this->map->filter($callback)->toArray();
	$this->assertEquals($expected, $actual);
	}

	public function testFilterWithCallbackWithoutArgument() {
	$this->expectException(InvalidArgumentException::class);

	$callback = function () : bool { // No argument
	return true;
	};

	$this->map->filter($callback);
	}

	public function testFilterKeys () {
	// Let's filter to keep short civilization names

	$callback = function ($key) : bool {
	return str_word_count($key) == 1;
	};

	$expected = [
	// Some sci-fi civilizations and author
	"Barrayar" => "Lois McMaster Bujold",
	"Hainish" => "Ursula K. Le Guin",
	];

	$actual = $this->map->filterKeys($callback)->toArray();
	$this->assertEquals($expected, $actual);
	}

	}

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