From 5881dd6f55a70eb6679020c2c0ad62609529e183 Mon Sep 17 00:00:00 2001
From: Nicolas Reynis <ywg.circle@gmail.com>
Date: Fri, 8 May 2020 15:17:06 +0200
Subject: [PATCH] feat(every): add supports

---
 README.md                |  1 +
 src/Chain.php            |  2 +
 src/Link/Every.php       | 26 ++++++++++++
 tests/ChainTest.php      |  1 +
 tests/Link/EveryTest.php | 87 ++++++++++++++++++++++++++++++++++++++++
 5 files changed, 117 insertions(+)
 create mode 100644 src/Link/Every.php
 create mode 100644 tests/Link/EveryTest.php

diff --git a/README.md b/README.md
index 6563ecc..751479c 100644
--- a/README.md
+++ b/README.md
@@ -201,6 +201,7 @@ $chain->reduce(function ($current, $value) {
 
 - `->count()`
 - `->countValues()`
+- `->every(callable)`
 - `->first()`
 - `->join([$glue])`
 - `->last()`
diff --git a/src/Chain.php b/src/Chain.php
index 84860c2..80eae03 100644
--- a/src/Chain.php
+++ b/src/Chain.php
@@ -7,6 +7,7 @@
 use Cocur\Chain\Link\Count;
 use Cocur\Chain\Link\CountValues;
 use Cocur\Chain\Link\Diff;
+use Cocur\Chain\Link\Every;
 use Cocur\Chain\Link\Filter;
 use Cocur\Chain\Link\First;
 use Cocur\Chain\Link\Find;
@@ -55,6 +56,7 @@ class Chain extends AbstractChain implements Countable
     use Count;
     use CountValues;
     use Diff;
+    use Every;
     use Filter;
     use Find;
     use First;
diff --git a/src/Link/Every.php b/src/Link/Every.php
new file mode 100644
index 0000000..06182c6
--- /dev/null
+++ b/src/Link/Every.php
@@ -0,0 +1,26 @@
+<?php
+
+namespace Cocur\Chain\Link;
+
+/**
+ * Every.
+ *
+ * @author    Nicolas Reynis
+ */
+trait Every
+{
+    /**
+     * @param callable $callback
+     *
+     * @return bool
+     */
+    public function every(callable $callback): bool
+    {
+        $pass = true;
+        foreach ($this->array as $index => $element) {
+            $pass = $pass && $callback($element, $index);
+        }
+
+        return $pass;
+    }
+}
diff --git a/tests/ChainTest.php b/tests/ChainTest.php
index acfecba..c8fcf55 100644
--- a/tests/ChainTest.php
+++ b/tests/ChainTest.php
@@ -81,6 +81,7 @@ public function chainHasTraits(): void
         $this->assertTrue(method_exists($c, 'count'));
         $this->assertTrue(method_exists($c, 'countValues'));
         $this->assertTrue(method_exists($c, 'diff'));
+        $this->assertTrue(method_exists($c, 'every'));
         $this->assertTrue(method_exists($c, 'filter'));
         $this->assertTrue(method_exists($c, 'find'));
         $this->assertTrue(method_exists($c, 'first'));
diff --git a/tests/Link/EveryTest.php b/tests/Link/EveryTest.php
new file mode 100644
index 0000000..7ffa0f7
--- /dev/null
+++ b/tests/Link/EveryTest.php
@@ -0,0 +1,87 @@
+<?php
+
+namespace Cocur\Chain\Link;
+
+/**
+ * EveryTest.
+ *
+ * @author    Nicolas Reynis
+ * @group     unit
+ */
+class EveryTest extends \PHPUnit\Framework\TestCase
+{
+    /**
+     * @test
+     * @covers \Cocur\Chain\Link\Every::every()
+     */
+    public function everyReturnTrueWhenConditionPass(): void
+    {
+        /** @var Every $mock */
+        $mock        = $this->getMockForTrait(Every::class);
+        $mock->array = [1, 2, 3, 4];
+
+        $this->assertTrue($mock->every(function ($v) {
+            return $v > 0;
+        }));
+    }
+
+    /**
+     * @test
+     * @covers \Cocur\Chain\Link\Every::every()
+     */
+    public function everyReturnFalseWhenConditionFail(): void
+    {
+        /** @var Every $mock */
+        $mock        = $this->getMockForTrait(Every::class);
+        $mock->array = [-1, -2, -3, -4];
+
+        $this->assertFalse($mock->every(function ($v) {
+            return $v > 0;
+        }));
+    }
+
+    /**
+     * @test
+     * @covers \Cocur\Chain\Link\Every::every()
+     */
+    public function everyReturnFalseWhenConditionFailOnSomeElements(): void
+    {
+        /** @var Every $mock */
+        $mock        = $this->getMockForTrait(Every::class);
+        $mock->array = [1, 2, -3, 4];
+
+        $this->assertFalse($mock->every(function ($v) {
+            return $v > 0;
+        }));
+    }
+
+    /**
+     * @test
+     * @covers \Cocur\Chain\Link\Every::every()
+     */
+    public function everyReturnTrueWithEmptyChain(): void
+    {
+        /** @var Every $mock */
+        $mock        = $this->getMockForTrait(Every::class);
+        $mock->array = [];
+
+        $this->assertTrue($mock->every(function ($v) {
+            return $v > 0;
+        }));
+    }
+
+    /**
+     * @test
+     * @covers \Cocur\Chain\Link\Every::every()
+     */
+    public function everyCallbackReceivesAlsoArrayKeys(): void
+    {
+        /** @var Every $mock */
+        $mock        = $this->getMockForTrait(Every::class);
+        $mock->array = ['foo' => 'fizz', 'bar' => 'buzz'];
+
+        $this->assertTrue($mock->every(function ($v, $k) {
+            return 'foo' === $k || 'bar' === $k;
+        }));
+    }
+}