http: fix use of iota on list of RequestMethod

Using iota on the second list of constants does not start the iota value
from 0, but start from the current index of list.  In previous code,
the value of RequestMethodConnect is not "1 << 0" or 1 but 2; this is
not what we expected, it should be 1.

1 files changed, 42 insertions, 0 deletions

diff --git a/lib/http/requestmethod_test.go b/lib/http/requestmethod_test.go
new file mode 100644
index 00000000..dde4b0fd
--- /dev/null
+++ b/lib/http/requestmethod_test.go
@@ -0,0 +1,42 @@
+// Copyright 2021, Shulhan <ms@kilabit.info>. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package http
+
+import (
+	"testing"
+
+	"github.com/shuLhan/share/lib/test"
+)
+
+func TestRequestMethod_String(t *testing.T) {
+	cases := []struct {
+		m   RequestMethod
+		exp string
+	}{
+		{0, "GET"},
+		{1, "CONNECT"},
+		{2, "DELETE"},
+		{3, "HEAD"},
+		{4, "OPTIONS"},
+		{5, "PATCH"},
+		{6, "POST"},
+		{7, "PUT"},
+		{8, "TRACE"},
+		{9, ""},
+		{RequestMethodGet, "GET"},
+		{RequestMethodConnect, "CONNECT"},
+		{RequestMethodDelete, "DELETE"},
+		{RequestMethodHead, "HEAD"},
+		{RequestMethodOptions, "OPTIONS"},
+		{RequestMethodPatch, "PATCH"},
+		{RequestMethodPost, "POST"},
+		{RequestMethodPut, "PUT"},
+		{RequestMethodTrace, "TRACE"},
+	}
+
+	for _, c := range cases {
+		test.Assert(t, "RequestMethod.String", c.exp, c.m.String(), true)
+	}
+}