feat: move Expectations API out of external plugin

tests/Features/Expect/HigherOrder/methods.php

@@ -0,0 +1,100 @@
+<?php
+
+it('can access methods', function () {
+    expect(new HasMethods())
+        ->name()->toBeString()->toEqual('Has Methods');
+});
+
+it('can access multiple methods', function () {
+    expect(new HasMethods())
+        ->name()->toBeString()->toEqual('Has Methods')
+        ->quantity()->toBeInt()->toEqual(20);
+});
+
+it('works with not', function () {
+    expect(new HasMethods())
+        ->name()->not->toEqual('world')->toEqual('Has Methods')
+        ->quantity()->toEqual(20)->not()->toEqual('bar')->not->toBeNull;
+});
+
+it('can accept arguments', function () {
+    expect(new HasMethods())
+        ->multiply(5, 4)->toBeInt->toEqual(20);
+});
+
+it('works with each', function () {
+    expect(new HasMethods())
+        ->attributes()->toBeArray->each->not()->toBeNull
+        ->attributes()->each(function ($attribute) {
+            $attribute->not->toBeNull();
+        });
+});
+
+it('works inside of each', function () {
+    expect(new HasMethods())
+        ->books()->each(function ($book) {
+            $book->title->not->toBeNull->cost->toBeGreaterThan(19);
+        });
+});
+
+it('works with sequence', function () {
+    expect(new HasMethods())
+        ->books()->sequence(
+            function ($book) { $book->title->toEqual('Foo')->cost->toEqual(20); },
+            function ($book) { $book->title->toEqual('Bar')->cost->toEqual(30); },
+        );
+});
+
+it('can compose complex expectations', function () {
+    expect(new HasMethods())
+        ->toBeObject()
+        ->name()->toEqual('Has Methods')->not()->toEqual('bar')
+        ->quantity()->not->toEqual('world')->toEqual(20)->toBeInt
+        ->multiply(3, 4)->not->toBeString->toEqual(12)
+        ->attributes()->toBeArray()
+        ->books()->toBeArray->each->not->toBeEmpty
+        ->books()->sequence(
+            function ($book) { $book->title->toEqual('Foo')->cost->toEqual(20); },
+            function ($book) { $book->title->toEqual('Bar')->cost->toEqual(30); },
+        );
+});
+
+class HasMethods
+{
+    public function name()
+    {
+        return 'Has Methods';
+    }
+
+    public function quantity()
+    {
+        return 20;
+    }
+
+    public function multiply($x, $y)
+    {
+        return $x * $y;
+    }
+
+    public function attributes()
+    {
+        return [
+            'name'     => $this->name(),
+            'quantity' => $this->quantity(),
+        ];
+    }
+
+    public function books()
+    {
+        return [
+            [
+                'title' => 'Foo',
+                'cost'  => 20,
+            ],
+            [
+                'title' => 'Bar',
+                'cost'  => 30,
+            ],
+        ];
+    }
+}

tests/Features/Expect/HigherOrder/methodsAndProperties.php

@@ -0,0 +1,50 @@
+<?php
+
+it('can access methods and properties', function () {
+    expect(new HasMethodsAndProperties())
+        ->name->toEqual('Has Methods and Properties')->not()->toEqual('bar')
+        ->multiply(3, 4)->not->toBeString->toEqual(12)
+        ->posts->each(function ($post) {
+            $post->is_published->toBeTrue;
+        })->books()->toBeArray()
+        ->posts->toBeArray->each->not->toBeEmpty
+        ->books()->sequence(
+            function ($book) { $book->title->toEqual('Foo')->cost->toEqual(20); },
+            function ($book) { $book->title->toEqual('Bar')->cost->toEqual(30); },
+        );
+});
+
+class HasMethodsAndProperties
+{
+    public $name = 'Has Methods and Properties';
+
+    public $posts = [
+        [
+            'is_published' => true,
+            'title'        => 'Foo',
+        ],
+        [
+            'is_published' => true,
+            'title'        => 'Bar',
+        ],
+    ];
+
+    public function books()
+    {
+        return [
+            [
+                'title' => 'Foo',
+                'cost'  => 20,
+            ],
+            [
+                'title' => 'Bar',
+                'cost'  => 30,
+            ],
+        ];
+    }
+
+    public function multiply($x, $y)
+    {
+        return $x * $y;
+    }
+}

tests/Features/Expect/HigherOrder/properties.php

@@ -0,0 +1,75 @@
+<?php
+
+it('allows properties to be accessed from the value', function () {
+    expect(['foo' => 1])->foo->toBeInt()->toEqual(1);
+});
+
+it('can access multiple properties from the value', function () {
+    expect(['foo' => 'bar', 'hello' => 'world'])
+        ->foo->toBeString()->toEqual('bar')
+        ->hello->toBeString()->toEqual('world');
+});
+
+it('works with not', function () {
+    expect(['foo' => 'bar', 'hello' => 'world'])
+        ->foo->not->not->toEqual('bar')
+        ->foo->not->toEqual('world')->toEqual('bar')
+        ->hello->toEqual('world')->not()->toEqual('bar')->not->toBeNull;
+});
+
+it('works with each', function () {
+    expect(['numbers' => [1, 2, 3, 4], 'words' => ['hey', 'there']])
+        ->numbers->toEqual([1, 2, 3, 4])->each->toBeInt->toBeLessThan(5)
+        ->words->each(function ($word) {
+            $word->toBeString()->not->toBeInt();
+        });
+});
+
+it('works inside of each', function () {
+    expect(['books' => [['title' => 'Foo', 'cost' => 20], ['title' => 'Bar', 'cost' => 30]]])
+        ->books->each(function ($book) {
+            $book->title->not->toBeNull->cost->toBeGreaterThan(19);
+        });
+});
+
+it('works with sequence', function () {
+    expect(['books' => [['title' => 'Foo', 'cost' => 20], ['title' => 'Bar', 'cost' => 30]]])
+        ->books->sequence(
+            function ($book) { $book->title->toEqual('Foo')->cost->toEqual(20); },
+            function ($book) { $book->title->toEqual('Bar')->cost->toEqual(30); },
+        );
+});
+
+it('can compose complex expectations', function () {
+    expect(['foo' => 'bar', 'numbers' => [1, 2, 3, 4]])
+        ->toContain('bar')->toBeArray()
+        ->numbers->toEqual([1, 2, 3, 4])->not()->toEqual('bar')->each->toBeInt
+        ->foo->not->toEqual('world')->toEqual('bar')
+        ->numbers->toBeArray();
+});
+
+it('works with objects', function () {
+    expect(new HasProperties())
+        ->name->toEqual('foo')->not->toEqual('world')
+        ->posts->toHaveCount(2)->each(function ($post) { $post->is_published->toBeTrue(); })
+        ->posts->sequence(
+            function ($post) { $post->title->toEqual('Foo'); },
+            function ($post) { $post->title->toEqual('Bar'); },
+        );
+});
+
+class HasProperties
+{
+    public $name = 'foo';
+
+    public $posts = [
+        [
+            'is_published' => true,
+            'title'        => 'Foo',
+        ],
+        [
+            'is_published' => true,
+            'title'        => 'Bar',
+        ],
+    ];
+}