Return boolean value for enabled? and supports_wildcard?

lib/gitlab/incoming_email.rb

@@ -8,11 +8,11 @@ module Gitlab
 
     class << self
       def enabled?
-        config.enabled && config.address
+        config.enabled && config.address.present?
       end
 
       def supports_wildcard?
-        config.address && config.address.include?(WILDCARD_PLACEHOLDER)
+        config.address.present? && config.address.include?(WILDCARD_PLACEHOLDER)
       end
 
       def supports_issue_creation?

spec/lib/gitlab/incoming_email_spec.rb

@@ -10,7 +10,7 @@ RSpec.describe Gitlab::IncomingEmail do
       end
 
       it 'returns true' do
-        expect(described_class.enabled?).to be_truthy
+        expect(described_class.enabled?).to be(true)
       end
     end
 
@@ -20,7 +20,7 @@ RSpec.describe Gitlab::IncomingEmail do
       end
 
       it "returns false" do
-        expect(described_class.enabled?).to be_falsey
+        expect(described_class.enabled?).to be(false)
       end
     end
   end
@@ -32,7 +32,7 @@ RSpec.describe Gitlab::IncomingEmail do
       end
 
       it 'confirms that wildcard is supported' do
-        expect(described_class.supports_wildcard?).to be_truthy
+        expect(described_class.supports_wildcard?).to be(true)
       end
     end
 
@@ -42,7 +42,7 @@ RSpec.describe Gitlab::IncomingEmail do
       end
 
       it 'returns that wildcard is not supported' do
-        expect(described_class.supports_wildcard?).to be_falsey
+        expect(described_class.supports_wildcard?).to be(false)
       end
     end
 
@@ -52,7 +52,7 @@ RSpec.describe Gitlab::IncomingEmail do
       end
 
       it 'returns that wildcard is not supported' do
-        expect(described_class.supports_wildcard?).to be_falsey
+        expect(described_class.supports_wildcard?).to be(false)
       end
     end
   end