public async Task UseAfterDelete()
{
var app = FirebaseApp.Create(new AppOptions()
{
Credential = MockCredential
});
FirebaseAuth auth = FirebaseAuth.DefaultInstance;
app.Delete();
await Assert.ThrowsAsync <InvalidOperationException>(
async() => await auth.CreateCustomTokenAsync("user"));
await Assert.ThrowsAsync <InvalidOperationException>(
async() => await auth.VerifyIdTokenAsync("user"));
await Assert.ThrowsAsync <InvalidOperationException>(
async() => await auth.SetCustomUserClaimsAsync("user", null));
await Assert.ThrowsAsync <InvalidOperationException>(
async() => await auth.GetOidcProviderConfigAsync("oidc.provider"));
}