fix

Author: jqhph

.gitignore

@@ -0,0 +1,2 @@
+
+.idea/

src/Exporters/Sheet.php

@@ -120,7 +120,7 @@ public function getHeadingStyle()
      * @param string $name
      * @return $this
      */
-    public function name($name)
+    public function name(?string $name)
     {
         if (is_string($name)) {
             $this->name = $name;

tests/Exporters/XLSX/WithChunkQueryTest.php

@@ -32,7 +32,7 @@ public function testStore()
             ->store($storePath);
 
         // 读取
-        $this->assertSingleSheet($storePath, 'Sheet1', $users);
+        $this->assertSingleSheet($storePath, '0', $users);
 
         /*
          |---------------------------------------------------------------
@@ -81,7 +81,7 @@ public function testRaw()
         file_put_contents($storePath, $contents);
 
         // 读取
-        $this->assertSingleSheet($storePath, 'Sheet1', $users);
+        $this->assertSingleSheet($storePath, '0', $users);
 
         /*
          |---------------------------------------------------------------

tests/Exporters/XLSX/WithSheetTest.php

@@ -24,6 +24,7 @@ public function test()
         $storePath = $this->generateTempFilePath('xlsx');
 
         $sheet = Excel::createSheet($users)
+            ->name('test')
             ->headingStyle(
                 (new StyleBuilder)
                     ->setFontColor(Color::BLUE)
@@ -43,7 +44,7 @@ public function test()
         Excel::export($sheet)->store($storePath);
 
         // 读取
-        $this->assertSingleSheet($storePath, 'Sheet1', $users);
+        $this->assertSingleSheet($storePath, 'test', $users);
 
         /*
         |---------------------------------------------------------------