completed specs for password reset token and added fail condition

app/interactors/create_password_reset_token.rb

@@ -2,6 +2,7 @@ class CreatePasswordResetToken
   include Interactor
 
   def call
+    context.fail! unless context.user
     context.user.reset_token = generate_reset_token
     update_reset_attributes(context.enc, Time.zone.now)
   end

spec/interactors/create_password_reset_token_spec.rb

@@ -0,0 +1,35 @@
+require "rails_helper"
+
+RSpec.describe CreatePasswordResetToken do
+  describe ".call" do
+    let(:user) { create(:confirmed_user, reset_token: nil) }
+
+    context "when successful" do
+      subject do
+        described_class.call(user: user)
+      end
+
+      it "sets the user's reset token" do
+        expect(subject.user.reset_token).to eq(subject.raw)
+      end
+
+      it "sets the user's reset_digest" do
+        expect(subject.user.reset_digest).to eq(subject.enc)
+      end
+
+      it "sets the user's reset_sent_at" do
+        expect(subject.user.reset_sent_at).to be_an(ActiveSupport::TimeWithZone)
+      end
+    end
+
+    context "when there isn't a valid user" do
+      subject do
+        described_class.call(user: nil)
+      end
+
+      it "fails" do
+        is_expected.to be_a_failure
+      end
+    end
+  end
+end