Merge pull request #14 from totov/fix/division-by-zero-bug

Fixes division by zero error.

Author: brendt

src/SparkLineEntry.php

@@ -13,6 +13,10 @@ public function __construct(
 
     public function rebase(int $base, int $max): self
     {
+        if($max === 0) {
+            return $this;
+        }
+
         return new self(
             count: (int) floor($this->count * ($base / $max)),
         );

tests/SparkLineTest.php

@@ -6,6 +6,7 @@
 
 use Brendt\SparkLine\SparkLine;
 use Brendt\SparkLine\SparkLineEntry;
+use DivisionByZeroError;
 use PHPUnit\Framework\TestCase;
 
 final class SparkLineTest extends TestCase
@@ -70,4 +71,12 @@ public function test_get_total(): void
 
         $this->assertEquals(3, $sparkLine->getTotal());
     }
+
+    /** @test */
+    public function test_entries_all_with_zero_values_doesnt_cause_error(): void
+    {
+        $sparkLine = (new SparkLine(0, 0, 0, 0))->make();
+
+        $this->assertStringContainsString('<svg', $sparkLine);
+    }
 }