func TestReadinessCheck(t *testing.T) {
	testCases := []struct {
		name                 string
		wantReadyzChecks     []string
		wantHealthzChecks    []string
		wantLivezChecks      []string
		skipHealth           bool
		etcdServersOverrides []string
	}{
		{
			name:              "Readyz should have etcd-readiness check",
			wantReadyzChecks:  []string{"etcd", "etcd-readiness"},
			wantHealthzChecks: []string{"etcd"},
			wantLivezChecks:   []string{"etcd"},
		},
		{
			name:              "skip health, Readyz should not have etcd-readiness check",
			wantReadyzChecks:  nil,
			wantHealthzChecks: nil,
			wantLivezChecks:   nil,
			skipHealth:        true,
		},
		{
			name:                 "Health checks should not have duplicated servers from etcd-servers-overrides",
			wantReadyzChecks:     []string{"etcd", "etcd-readiness", "etcd-override-0", "etcd-override-readiness-0"},
			wantHealthzChecks:    []string{"etcd", "etcd-override-0"},
			wantLivezChecks:      []string{"etcd", "etcd-override-0"},
			etcdServersOverrides: []string{"r1#s1.com;s2.com", "r2#s1.com;s2.com"},
		},
		{
			name: "Health checks should not have duplicated servers from etcd-servers-overrides " +
				"if servers are provided in different orders",
			wantReadyzChecks:     []string{"etcd", "etcd-readiness", "etcd-override-0", "etcd-override-readiness-0"},
			wantHealthzChecks:    []string{"etcd", "etcd-override-0"},
			wantLivezChecks:      []string{"etcd", "etcd-override-0"},
			etcdServersOverrides: []string{"r1#s1.com;s2.com", "r2#s2.com;s1.com"},
		},
		{
			name: "Health checks should allow multiple overrides in etcd-servers-overrides",
			wantReadyzChecks: []string{"etcd", "etcd-readiness", "etcd-override-0", "etcd-override-readiness-0",
				"etcd-override-1", "etcd-override-readiness-1"},
			wantHealthzChecks:    []string{"etcd", "etcd-override-0", "etcd-override-1"},
			wantLivezChecks:      []string{"etcd", "etcd-override-0", "etcd-override-1"},
			etcdServersOverrides: []string{"r1#s1.com;s2.com", "r2#s3.com;s4.com"},
		},
		{
			name: "Health checks should allow multiple overrides in etcd-servers-overrides if servers overlap between overrides",
			wantReadyzChecks: []string{"etcd", "etcd-readiness", "etcd-override-0", "etcd-override-readiness-0",
				"etcd-override-1", "etcd-override-readiness-1"},
			wantHealthzChecks:    []string{"etcd", "etcd-override-0", "etcd-override-1"},
			wantLivezChecks:      []string{"etcd", "etcd-override-0", "etcd-override-1"},
			etcdServersOverrides: []string{"r1#s1.com;s2.com", "r2#s2.com;s3.com"},
		},
	}

	scheme := runtime.NewScheme()
	codecs := serializer.NewCodecFactory(scheme)

	for _, tc := range testCases {
		t.Run(tc.name, func(t *testing.T) {
			serverConfig := server.NewConfig(codecs)
			etcdOptions := &EtcdOptions{SkipHealthEndpoints: tc.skipHealth, EtcdServersOverrides: tc.etcdServersOverrides}
			if err := etcdOptions.ApplyTo(serverConfig); err != nil {
				t.Fatalf("Failed to add healthz error: %v", err)
			}

			healthChecksAreEqual(t, tc.wantReadyzChecks, serverConfig.ReadyzChecks, "readyz")
			healthChecksAreEqual(t, tc.wantHealthzChecks, serverConfig.HealthzChecks, "healthz")
			healthChecksAreEqual(t, tc.wantLivezChecks, serverConfig.LivezChecks, "livez")
		})
	}
}