Add at least minimal test for AdministrationMailer

spec/mailers/administration_mailer_spec.rb

@@ -0,0 +1,36 @@
+RSpec.describe AdministrationMailer, type: :mailer do
+  describe '#new_admin_email' do
+    let(:admin) { create(:administrateur) }
+    let(:administration) { create(:administration) }
+
+    subject { described_class.new_admin_email(admin, administration) }
+
+    it { expect(subject.subject).not_to be_empty }
+  end
+
+  describe '#invite_admin' do
+    let(:admin) { create(:administrateur) }
+    let(:token) { "Toc toc toc" }
+    let(:administration_id) { BizDev::BIZ_DEV_IDS.first }
+
+    subject { described_class.invite_admin(admin, token, administration_id) }
+
+    it { expect(subject.subject).not_to be_empty }
+  end
+
+  describe '#refuse_amin' do
+    let(:mail) { "l33t-4dm1n@h4x0r.com" }
+
+    subject { described_class.refuse_admin(mail) }
+
+    it { expect(subject.subject).not_to be_empty }
+  end
+
+  describe '#dubious_procedures' do
+    let(:procedures_and_type_de_champs) { [] }
+
+    subject { described_class.dubious_procedures(procedures_and_type_de_champs) }
+
+    it { expect(subject.subject).not_to be_empty }
+  end
+end