e2e: add a case for CommonName auth of v3 API

e2e/ctl_v3_auth_test.go

@@ -34,6 +34,7 @@ func TestCtlV3AuthMemberRemove(t *testing.T) {
 	testCtl(t, authTestMemberRemove, withQuorum(), withNoStrictReconfig())
 }
 func TestCtlV3AuthMemberUpdate(t *testing.T) { testCtl(t, authTestMemberUpdate) }
+func TestCtlV3AuthCertCN(t *testing.T)       { testCtl(t, authTestCertCN, withCfg(configClientTLSCertAuth)) }
 
 func authEnableTest(cx ctlCtx) {
 	if err := authEnable(cx); err != nil {
@@ -549,3 +550,36 @@ func authTestMemberUpdate(cx ctlCtx) {
 		cx.t.Fatal(err)
 	}
 }
+
+func authTestCertCN(cx ctlCtx) {
+	if err := ctlV3User(cx, []string{"add", "etcd", "--interactive=false"}, "User etcd created", []string{""}); err != nil {
+		cx.t.Fatal(err)
+	}
+	if err := spawnWithExpect(append(cx.PrefixArgs(), "role", "add", "test-role"), "Role test-role created"); err != nil {
+		cx.t.Fatal(err)
+	}
+	if err := ctlV3User(cx, []string{"grant-role", "etcd", "test-role"}, "Role test-role is granted to user etcd", nil); err != nil {
+		cx.t.Fatal(err)
+	}
+	cmd := append(cx.PrefixArgs(), "role", "grant-permission", "test-role", "readwrite", "foo")
+	if err := spawnWithExpect(cmd, "Role test-role updated"); err != nil {
+		cx.t.Fatal(err)
+	}
+
+	// grant a new key
+	if err := ctlV3RoleGrantPermission(cx, "test-role", grantingPerm{true, true, "hoo", "", false}); err != nil {
+		cx.t.Fatal(err)
+	}
+
+	// try a granted key
+	cx.user, cx.pass = "", ""
+	if err := ctlV3Put(cx, "hoo", "bar", ""); err != nil {
+		cx.t.Fatal(err)
+	}
+
+	// try a non granted key
+	cx.user, cx.pass = "", ""
+	if err := ctlV3PutFailPerm(cx, "baz", "bar"); err == nil {
+		cx.t.Fatal(err)
+	}
+}

e2e/etcd_test.go

@@ -106,6 +106,13 @@ var (
 		isPeerTLS:    true,
 		initialToken: "new",
 	}
+	configClientTLSCertAuth = etcdProcessClusterConfig{
+		clusterSize:           1,
+		proxySize:             0,
+		clientTLS:             clientTLS,
+		initialToken:          "new",
+		clientCertAuthEnabled: true,
+	}
 )
 
 func configStandalone(cfg etcdProcessClusterConfig) *etcdProcessClusterConfig {