Refactor line length calculation

src/Typography/Line.php

@@ -86,15 +86,25 @@ public function setPosition(Point $point): self
     }
 
     /**
-     * Count segments of line
-     *
+     * Count segments (individual words including punctuation marks) of line
+    *
      * @return int
      */
     public function count(): int
     {
         return count($this->segments);
     }
 
+    /**
+     * Count characters of line
+     *
+     * @return int
+     */
+    public function length(): int
+    {
+        return mb_strlen((string) $this);
+    }
+
     /**
      * Cast line to string
      *

src/Typography/TextBlock.php

@@ -62,10 +62,10 @@ public function longestLine(): Line
     {
         $lines = $this->lines();
         usort($lines, function (Line $a, Line $b) {
-            if (mb_strlen((string) $a) === mb_strlen((string) $b)) {
+            if ($a->length() === $b->length()) {
                 return 0;
             }
-            return mb_strlen((string) $a) > mb_strlen((string) $b) ? -1 : 1;
+            return $a->length() > $b->length() ? -1 : 1;
         });
 
         return $lines[0];

tests/Unit/Typography/LineTest.php

@@ -45,6 +45,21 @@ public function testCount(): void
         $this->assertEquals(2, $line->count());
     }
 
+    public function testLength(): void
+    {
+        $line = new Line();
+        $this->assertEquals(0, $line->length());
+
+        $line = new Line("foo");
+        $this->assertEquals(3, $line->length());
+
+        $line = new Line("foo bar.");
+        $this->assertEquals(8, $line->length());
+
+        $line = new Line("🫷🙂🫸");
+        $this->assertEquals(3, $line->length());
+    }
+
     public function testAdd(): void
     {
         $line = new Line();