test(admin-css): guard mini charts styles exist

tests/Feature/AdminComponentsCssMiniChartsShouldExistTest.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminComponentsCssMiniChartsShouldExistTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_admin_components_css_should_define_mini_chart_styles(): void
+    {
+        $path = public_path('css/admin-components.css');
+        $this->assertFileExists($path);
+
+        $css = (string) file_get_contents($path);
+
+        // 趋势迷你图
+        $this->assertStringContainsString('.adm-mini-chart', $css);
+        $this->assertStringContainsString('.adm-mini-chart-bar', $css);
+
+        // 排行迷你图
+        $this->assertStringContainsString('.adm-mini-rank', $css);
+        $this->assertStringContainsString('.adm-mini-rank-bar', $css);
+
+        // 占比迷你图
+        $this->assertStringContainsString('.adm-mini-share', $css);
+        $this->assertStringContainsString('.adm-mini-share-bar', $css);
+    }
+}