From 5a88437387663023c7a276aadfbd4ad2797571bc Mon Sep 17 00:00:00 2001
From: Stephen Hamilton <totovste@googlemail.com>
Date: Wed, 8 Oct 2025 16:20:10 +0100
Subject: [PATCH] Fixes division by zero error.

---
 src/SparkLineEntry.php  | 4 ++++
 tests/SparkLineTest.php | 9 +++++++++
 2 files changed, 13 insertions(+)

diff --git a/src/SparkLineEntry.php b/src/SparkLineEntry.php
index 74a380d..2683018 100644
--- a/src/SparkLineEntry.php
+++ b/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)),
         );
diff --git a/tests/SparkLineTest.php b/tests/SparkLineTest.php
index 47645ff..a32e836 100644
--- a/tests/SparkLineTest.php
+++ b/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);
+    }
 }