Adds unit tests - Improved checking for numbered documents

Issue: documentacao-e-tarefas/scielo#912

Signed-off-by: Jhon <jhon@lepidus.com.br>

Author: JhonathanLepidus

tests/ContentParserTest.php

@@ -32,6 +32,7 @@ public function testParsingOfDocument(): void
             'elementum',
             'id',
             'quam',
+            '10',
             'id,',
             'finibus',
             'porttitor',
@@ -47,6 +48,36 @@ public function testParsingOfDocument(): void
         $this->assertEquals($expectedParsedWords, $parsedWords);
     }
 
+    public function testDetectsDocumentLinesAreNumbered(): void
+    {
+        $nonNumberedDummyDocLines = [
+            'Lorem ipsum dolor',
+            'sit amet consectetur',
+            'adipiscing elit',
+            'Proin arcu diam',
+            'elementum id quam'
+        ];
+        $this->assertFalse($this->contentParser->checkDocumentIsNumbered($nonNumberedDummyDocLines));
+
+        $partiallyNumberedDummyDocLines = [
+            '1 Lorem ipsum dolor',
+            'sit amet consectetur',
+            '3 adipiscing elit',
+            'Proin arcu diam',
+            'elementum id quam'
+        ];
+        $this->assertFalse($this->contentParser->checkDocumentIsNumbered($partiallyNumberedDummyDocLines));
+
+        $numberedDummyDocLines = [
+            '1 Lorem ipsum dolor',
+            '2 sit amet consectetur',
+            '3 adipiscing elit',
+            '4 Proin arcu diam',
+            '5 elementum id quam'
+        ];
+        $this->assertTrue($this->contentParser->checkDocumentIsNumbered($numberedDummyDocLines));
+    }
+
     public function testParsingOfLineNumberedDocument(): void
     {
         $expectedParsedWords = [