force method to uppercase (#7514)

Co-authored-by: Mislav Marohnić <mislav@github.com>

pkg/cmd/api/http.go

@@ -50,7 +50,7 @@ func httpRequest(client *http.Client, hostname string, method string, p string,
 		return nil, fmt.Errorf("unrecognized parameters type: %v", params)
 	}
 
-	req, err := http.NewRequest(method, requestURL, body)
+	req, err := http.NewRequest(strings.ToUpper(method), requestURL, body)
 	if err != nil {
 		return nil, err
 	}

pkg/cmd/api/http_test.go

@@ -129,6 +129,24 @@ func Test_httpRequest(t *testing.T) {
 				headers: "",
 			},
 		},
+		{
+			name: "lowercase HTTP method",
+			args: args{
+				client:  &httpClient,
+				host:    "github.com",
+				method:  "get",
+				p:       "repos/octocat/spoon-knife",
+				params:  nil,
+				headers: []string{},
+			},
+			wantErr: false,
+			want: expects{
+				method:  "GET",
+				u:       "https://api.github.com/repos/octocat/spoon-knife",
+				body:    "",
+				headers: "",
+			},
+		},
 		{
 			name: "GET with leading slash",
 			args: args{