fix: correcting glob expression for snake case

Author: dukeluo

lib/constants/naming-convention.js

@@ -17,7 +17,7 @@ const PASCAL_CASE = '*([A-Z]*([a-z0-9]))';
 /**
  * @example hello, hello_world
  */
-const SNAKE_CASE = '+([a-z])*(_+([a-z0-9]))';
+const SNAKE_CASE = '+([a-z])*([a-z0-9])*(_+([a-z0-9]))';
 
 /**
  * @example hello, hello-world

tests/lib/rules/filename-naming-convention.js

@@ -185,6 +185,11 @@ ruleTester.run(
         filename: 'src/utils/calculate_price.js',
         options: [{ '*.js': 'SNAKE_CASE', '*.jsx': 'SNAKE_CASE' }],
       },
+      {
+        code: "var foo = 'bar';",
+        filename: 'src/utils/i18n_test.js',
+        options: [{ '*.js': 'SNAKE_CASE', '*.jsx': 'SNAKE_CASE' }],
+      },
     ],
 
     invalid: [
@@ -240,6 +245,19 @@ ruleTester.run(
           },
         ],
       },
+      {
+        code: "var foo = 'bar';",
+        filename: 'src/utils/18_test.js',
+        options: [{ '*.js': 'SNAKE_CASE', '*.jsx': 'SNAKE_CASE' }],
+        errors: [
+          {
+            message:
+              'The filename "18_test.js" does not match the "SNAKE_CASE" style',
+            column: 1,
+            line: 1,
+          },
+        ],
+      },
     ],
   }
 );