From dc2a74dc40aeace48c5ff4edf443ea999f832de7 Mon Sep 17 00:00:00 2001
From: kelvin <kyun.wang@jodoinc.com>
Date: Sun, 29 Sep 2024 16:01:07 +0800
Subject: [PATCH] fix(swagger): fix the parsing of enum types with array
 (#4083)

---
 .../src/decorators/api-property.decorator.ts  |  2 +-
 packages/swagger/test/parser.test.ts          | 20 +++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/packages/swagger/src/decorators/api-property.decorator.ts b/packages/swagger/src/decorators/api-property.decorator.ts
index 4dce026e5be3..2808f14f3122 100644
--- a/packages/swagger/src/decorators/api-property.decorator.ts
+++ b/packages/swagger/src/decorators/api-property.decorator.ts
@@ -45,7 +45,7 @@ export function createApiPropertyDecorator(
     options.type = getEnumType(enumValues);
   }
 
-  if (isArray) {
+  if (options.type !== 'array' && isArray) {
     options.type = 'array';
     options.items = {
       type: type as any,
diff --git a/packages/swagger/test/parser.test.ts b/packages/swagger/test/parser.test.ts
index 1c81acbe1a99..25f2822cc23c 100644
--- a/packages/swagger/test/parser.test.ts
+++ b/packages/swagger/test/parser.test.ts
@@ -2208,6 +2208,26 @@ describe('test property metadata parse', () => {
       additionalProperties: true
     });
   });
+
+  it('should format enum type with array', () => {
+    enum Animal {
+      Cat = 0,
+      Dog = 1,
+      Pig = 2,
+    }
+
+    const result = swaggerExplorer.formatType({
+      type: 'enum',
+      enum: Animal,
+      isArray: true,
+    });
+
+    expect(result).toEqual({
+      type: 'enum',
+      isArray: true,
+      enum: [0, 1, 2],
+    });
+  })
 });
 
 describe('test @ApiOperation', () => {