feat: support to output a big string (#26)

* feat: support to output a big string

* Update StringService.java

* Update test-suite.yaml

Author: LinuxSuRen

e2e/test-suite.yaml

@@ -72,6 +72,17 @@ items:
   expect:
     body: |
       {"name":"rick","age":18}
+- name: big
+  request:
+    api: /big
+    query:
+      size: "1"
+    header:
+      Authorization: "{{ .param.auth }}"
+      Content-Type: application/json
+  expect:
+    body: |
+      {"message":"m","data":null}
 
   ## Cookies
 - name: no-cookie

src/main/java/io/github/devopsws/demo/service/StringService.java

@@ -38,4 +38,19 @@ public Message base64(@RequestBody Message message) {
     public Object echo(@RequestBody Object payload) {
         return payload;
     }
+
+    @GetMapping("/big")
+    public Message big(@RequestParam(required = true) int size) {
+        Message msg = new Message();
+        StringBuffer buf = new StringBuffer();
+        if (size < 0) {
+            buf.append("size needs to be positive");
+        } else {
+            for (int i = 0; i < size; i++) {
+                buf.append("m");
+            }
+        }
+        msg.setMessage(buf.toString());
+        return msg;
+    }
 }