Add tests for tags with custom values (kubernetes#11686)

* Add tests for tags with custom values

* Fix typo in comments

internal/ingress/controller/template/crossplane/crossplane_test.go

@@ -63,14 +63,60 @@ func TestCrossplaneTemplate(t *testing.T) {
 	require.NoError(t, err)
 	require.NoError(t, mimeFile.Close())
 
-	t.Run("it should be able to marshall and unmarshall the current configuration", func(t *testing.T) {
-		tplConfig := &config.TemplateConfig{
-			Cfg: config.NewDefault(),
-		}
+	tplConfig := &config.TemplateConfig{
+		Cfg: config.NewDefault(),
+	}
+	tpl := crossplane.NewTemplate()
+
+	t.Run("it should be able to marshall and unmarshall the default configuration", func(t *testing.T) {
 		tplConfig.Cfg.DefaultSSLCertificate = defaultCertificate
 		tplConfig.Cfg.EnableBrotli = true
 
-		tpl := crossplane.NewTemplate()
+		tpl.SetMimeFile(mimeFile.Name())
+		content, err := tpl.Write(tplConfig)
+		require.NoError(t, err)
+
+		tmpFile, err := os.CreateTemp("", "")
+		require.NoError(t, err)
+		_, err = tmpFile.Write(content)
+		require.NoError(t, err)
+		require.NoError(t, tmpFile.Close())
+
+		_, err = ngx_crossplane.Parse(tmpFile.Name(), &options)
+		require.NoError(t, err)
+	})
+
+	t.Run("it should be able to marshall and unmarshall the specified configuration", func(t *testing.T) {
+		tplConfig.Cfg.DefaultSSLCertificate = defaultCertificate
+
+		tplConfig.Cfg.UseProxyProtocol = true
+
+		tplConfig.Cfg.GRPCBufferSizeKb = 10 // default 0
+
+		tplConfig.Cfg.HTTP2MaxHeaderSize = "10" // default ""
+		tplConfig.Cfg.HTTP2MaxFieldSize = "10"  // default ""
+		tplConfig.Cfg.HTTP2MaxRequests = 1      // default 0
+
+		tplConfig.Cfg.UseGzip = true // default false
+		tplConfig.Cfg.GzipDisable = "enable"
+
+		tplConfig.Cfg.ShowServerTokens = true // default false
+
+		tplConfig.Cfg.DisableAccessLog = false // TODO: test true
+		tplConfig.Cfg.DisableHTTPAccessLog = false
+		tplConfig.Cfg.EnableSyslog = true
+		tplConfig.Cfg.SyslogHost = "localhost"
+
+		// Example: openssl rand 80 | openssl enc -A -base64
+		tplConfig.Cfg.SSLSessionTicketKey = "lOj3+7Xe21K9GapKqqPIw/gCQm5S4C2lK8pVne6drEik0QqOQHAw1AaPSMdbAvXx2zZKKPCEG98+g3hzftmrfnePSIvokIIE+hHto3Kj1HQ="
+
+		tplConfig.Cfg.CustomHTTPErrors = []int{1024, 2048}
+
+		tplConfig.Cfg.AllowBackendServerHeader = true                                      // default false
+		tplConfig.Cfg.BlockCIDRs = []string{"192.168.0.0/24", " 200.200.0.0/16 "}          // default 0
+		tplConfig.Cfg.BlockUserAgents = []string{"someuseragent", " another/user-agent  "} // default 0
+
+		tpl = crossplane.NewTemplate()
 		tpl.SetMimeFile(mimeFile.Name())
 		content, err := tpl.Write(tplConfig)
 		require.NoError(t, err)