Add comments support to HTTP targets format (#363)

README.md

@@ -236,6 +236,14 @@ X-Account-ID: 99
 @/path/to/newthing.json
 ```
 
+###### Add comments to the targets
+Lines starting with # are ignored.
+
+```
+# get a dragon ball
+GET http://goku:9090/path/to/dragon?item=ball
+```
+
 #### `-h2c`
 
 Specifies that HTTP2 requests are to be sent over TCP without TLS encryption.

lib/targets.go

@@ -269,7 +269,8 @@ func NewHTTPTargeter(src io.Reader, body []byte, hdr http.Header) Targeter {
 				return ErrNoTargets
 			}
 			line = strings.TrimSpace(sc.Text())
-			if len(line) != 0 {
+
+			if len(line) != 0 && line[0] != '#'{
 				break
 			}
 		}

lib/targets_test.go

@@ -309,7 +309,12 @@ func TestNewHTTPTargeter(t *testing.T) {
 		@`, bodyf.Name(),
 		`
 
-		SUBSCRIBE http://foobar.org/sub`,
+		SUBSCRIBE http://foobar.org/sub
+
+		# GET TEST
+		GET http://:6060/
+		X-Header: 1
+		X-Header: 2`,
 	)
 
 	src := bytes.NewBufferString(strings.TrimSpace(targets))
@@ -360,6 +365,15 @@ func TestNewHTTPTargeter(t *testing.T) {
 			Body:   []byte{},
 			Header: http.Header{"Content-Type": []string{"text/plain"}},
 		},
+		{
+			Method: "GET",
+			URL:    "http://:6060/",
+			Body:   []byte{},
+			Header: http.Header{
+				"X-Header":     []string{"1", "2"},
+				"Content-Type": []string{"text/plain"},
+			},
+		},
 	} {
 		var got Target
 		if err := read(&got); err != nil {