DEV: Make overrides_email an integration spec (#56)

We're moving the location of the email-overriding logic in https://github.com/discourse/discourse/pull/15378, which makes the old unit test in this plugin fail. This commit makes it an integration test, so that it's more robust against core changes, and will continue to pass before and after the core changes.

spec/integration/overrides_email_spec.rb

@@ -0,0 +1,52 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+describe "OAuth2 Overrides Email", type: :request do
+  fab!(:initial_email) { "initial@example.com" }
+  fab!(:new_email) { "new@example.com" }
+  fab!(:user) { Fabricate(:user, email: initial_email) }
+  fab!(:uac) { UserAssociatedAccount.create!(user: user, provider_name: "oauth2_basic", provider_uid: "12345") }
+
+  before do
+    SiteSetting.oauth2_enabled = true
+    SiteSetting.oauth2_callback_user_id_path = "uid"
+    SiteSetting.oauth2_fetch_user_details = false
+    SiteSetting.oauth2_email_verified = true
+
+    OmniAuth.config.test_mode = true
+    OmniAuth.config.mock_auth[:oauth2_basic] = OmniAuth::AuthHash.new(
+      provider: 'oauth2_basic',
+      uid: '12345',
+      info: OmniAuth::AuthHash::InfoHash.new(
+        email: new_email
+      ),
+      extra: {
+        raw_info: OmniAuth::AuthHash.new(
+          email_verified: true
+        )
+      },
+      credentials: OmniAuth::AuthHash.new
+    )
+  end
+
+  it "doesn't update email by default" do
+    expect(user.reload.email).to eq(initial_email)
+
+    get "/auth/oauth2_basic/callback"
+    expect(response.status).to eq(302)
+    expect(session[:current_user_id]).to eq(user.id)
+
+    expect(user.reload.email).to eq(initial_email)
+  end
+
+  it 'updates user email if enabled' do
+    SiteSetting.oauth2_overrides_email = true
+
+    get "/auth/oauth2_basic/callback"
+    expect(response.status).to eq(302)
+    expect(session[:current_user_id]).to eq(user.id)
+
+    expect(user.reload.email).to eq(new_email)
+  end
+end

spec/plugin_spec.rb

@@ -25,29 +25,6 @@ describe OAuth2BasicAuthenticator do
       expect(result.user).to eq(user)
     end
 
-    it 'updated user email if enabled' do
-      authenticator.stubs(:fetch_user_details).returns(email: user.email, user_id: 'id')
-
-      # Create association
-      result = authenticator.after_authenticate(auth)
-      expect(result.user).to eq(user)
-
-      # Change user email on remote system
-      old_email = user.email
-      authenticator.stubs(:fetch_user_details).returns(email: "newemail@example.com", user_id: 'id')
-
-      # Login again - no change
-      result = authenticator.after_authenticate(auth)
-      expect(result.user).to eq(user)
-      expect(result.user.email).to eq(old_email)
-
-      # Enable site setting
-      SiteSetting.oauth2_overrides_email = true
-      result = authenticator.after_authenticate(auth)
-      expect(result.user).to eq(user)
-      expect(result.user.email).to eq("newemail@example.com")
-    end
-
     it 'validates user email if provider has verified' do
       SiteSetting.oauth2_email_verified = false
       authenticator.stubs(:fetch_user_details).returns(email: user.email, email_verified: true)