Added PATCH support with patchfile parameter

README.md

@@ -190,14 +190,26 @@ Starting Load Test with 100000 requests using 125 concurrent users
 Example hitting a POST endpoint where POST json data is defined in a file:
 
 ```bash
-$ ./cassowary run -u http://localhost:8000/add-user -c 10 -n 1000 --post-file user.json
+$ ./cassowary run -u http://localhost:8000/add-user -c 10 -n 1000 --postfile user.json
 
 Starting Load Test with 1000 requests using 10 concurrent users
 
 [ omitted for brevity ]
 
 ```
 
+### Load Test with PATCH Data  
+Example hitting a PATCH endpoint where PATCH json data is defined in a file:
+
+```bash
+$ ./cassowary run -u http://localhost:8000/add-user -c 5 -n 200 --patchfile user.json
+
+Starting Load Test with 200 requests using 5 concurrent users
+
+[ omitted for brevity ]
+
+```
+
 ### Specifying a Duration for the Load Test  
 Example specifying a *duration* for your load test, in the command below we specify that we want send 100 requests over a duration of 30 seconds:
 

cmd/cassowary/cli.go

@@ -160,6 +160,13 @@ func validateCLI(c *cli.Context) error {
 			return err
 		}
 		data = fileData
+	} else if c.String("patchfile") != "" {
+		httpMethod = "PATCH"
+		fileData, err := readFile(c.String("patchfile"))
+		if err != nil {
+			return err
+		}
+		data = fileData
 	} else {
 		httpMethod = "GET"
 	}
@@ -279,6 +286,10 @@ func runCLI(args []string) {
 					Name:  "postfile",
 					Usage: "file containing data to POST (content type will default to application/json)",
 				},
+				&cli.StringFlag{
+					Name:  "patchfile",
+					Usage: "file containing data to PATCH (content type will default to application/json)",
+				},
 				&cli.StringFlag{
 					Name:  "putfile",
 					Usage: "file containing data to PUT (content type will default to application/json)",

pkg/client/load.go

@@ -51,6 +51,12 @@ func (c *Cassowary) runLoadTest(outPutChan chan<- durationMetrics, workerChan ch
 				if err != nil {
 					log.Fatalf("%v", err)
 				}
+			case "PATCH":
+				request, err = http.NewRequest("PATCH", c.BaseURL, bytes.NewBuffer(c.Data))
+				request.Header.Set("Content-Type", "application/json")
+				if err != nil {
+					log.Fatalf("%v", err)
+				}
 			default:
 				request, err = http.NewRequest("GET", c.BaseURL, nil)
 				if err != nil {