fix unstable gomega match for large nested dex policies

gomega Expect was not able to compare correctly the dex policies
and would fail when running in "Run" mode but pass when running in
"Debug" mode.
It was also passing when we print the values before the Expect().To()
call.

To fix this, we convert the larger and nested struct to String
and compare the string values.

Author: ti-afra

pkg/render/dex_test.go

@@ -15,6 +15,7 @@
 package render_test
 
 import (
+	"encoding/json"
 	"fmt"
 
 	. "github.com/onsi/ginkgo"
@@ -526,7 +527,9 @@ var _ = Describe("dex rendering tests", func() {
 
 					policy := testutils.GetAllowTigeraPolicyFromResources(policyName, resources)
 					expectedPolicy := getExpectedPolicy(scenario)
-					Expect(policy).To(Equal(expectedPolicy))
+					policyJ, _ := json.Marshal(policy)
+					expectedPolicyJ, _ := json.Marshal(expectedPolicy)
+					Expect(string(policyJ)).To(Equal(string(expectedPolicyJ)))
 				},
 				// Dex only renders in the presence of an Authentication CR, therefore does not have a config option for managed clusters.
 				Entry("for management/standalone, kube-dns", testutils.AllowTigeraScenario{ManagedCluster: false, OpenShift: false}),