Hide "additional services" if there is only a single primary services

There is a case where there is a single primary service (e.g.
a fresh device) and we should hide additional services in that
case.

Test: unit + manual
Bug: 325077523
Change-Id: I9efb785ac3f7a328fdccd138e585f766d46fa282

tests/unit/src/com/android/settings/applications/credentials/CredentialManagerPreferenceControllerTest.java

@@ -528,6 +528,23 @@ public class CredentialManagerPreferenceControllerTest {
         assertThat(thumbnail.getIntrinsicWidth()).isEqualTo(getIconSize());
     }
 
+    @Test
+    public void hasNonPrimaryServices_allServicesArePrimary() {
+        CredentialManagerPreferenceController controller =
+                createControllerWithServices(
+                    Lists.newArrayList(createCredentialProviderPrimary()));
+        assertThat(controller.hasNonPrimaryServices()).isFalse();
+    }
+
+    @Test
+    public void hasNonPrimaryServices_mixtureOfServices() {
+        CredentialManagerPreferenceController controller =
+                createControllerWithServices(
+                    Lists.newArrayList(createCredentialProviderInfo(),
+                        createCredentialProviderPrimary()));
+        assertThat(controller.hasNonPrimaryServices()).isTrue();
+    }
+
     @Test
     public void testProviderLimitReached() {
         // The limit is 5 with one slot reserved for primary.
@@ -580,6 +597,13 @@ public class CredentialManagerPreferenceControllerTest {
                 .build();
     }
 
+    private CredentialProviderInfo createCredentialProviderPrimary() {
+        return createCredentialProviderInfoBuilder(
+            "com.android.primary", "CredManProvider", "Service Label", "App Name")
+                .setPrimary(true)
+                .build();
+    }
+
     private CredentialProviderInfo createCredentialProviderInfoWithSubtitle(
             String packageName, String className, CharSequence label, CharSequence subtitle) {
         ServiceInfo si = new ServiceInfo();