Merge pull request #17 from ericksonreyes/string-functions

String functions
ericksonreyes · May 16, 2019 · 25c61c5 · 25c61c5
2 parents 2745823 + 54cd1ae
commit 25c61c5
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diff --git a/spec/EricksonReyes/DomainDrivenDesign/Common/ValueObject/StringValueSpec.php b/spec/EricksonReyes/DomainDrivenDesign/Common/ValueObject/StringValueSpec.php
@@ -106,4 +106,27 @@ public function it_knows_when_it_contains_a_string()
         $this->doesNotContain($word)->shouldReturn(false);
         $this->doesNotContain('Ginebra')->shouldReturn(true);
     }
+
+    public function it_can_be_broken_down_into_words()
+    {
+        $words = explode(' ', $this->value);
+        $strings = [];
+
+        foreach ($words as $word) {
+            $strings[] = new StringValue($word);
+        }
+
+        $this->words()->shouldHaveCount(count($strings));
+
+        foreach ($this->words() as $wordObject) {
+            $wordObject->shouldHaveType(StringValue::class);
+        }
+    }
+
+    public function it_counts_the_number_of_words()
+    {
+        $words = explode(' ', $this->value);
+        $numberOfWords = count($words);
+        $this->numberOfWords()->shouldReturn($numberOfWords);
+    }
 }
diff --git a/src/EricksonReyes/DomainDrivenDesign/Common/ValueObject/StringValue.php b/src/EricksonReyes/DomainDrivenDesign/Common/ValueObject/StringValue.php
@@ -171,4 +171,28 @@ public function doesNotContain(string $keyword): bool
     {
         return $this->contains($keyword) === false;
     }
+
+    /**
+     * @return array
+     */
+    public function words(): array
+    {
+        $words = explode(' ', $this->value());
+        $strings = [];
+
+        foreach ($words as $word) {
+            $strings[] = new StringValue($word);
+        }
+
+        return $strings;
+    }
+
+    /**
+     * @return int
+     */
+    public function numberOfWords(): int
+    {
+        $words = explode(' ', $this->value());
+        return count($words);
+    }
 }