Add multitenancy with apartment

Co-Authored-By: Javi Martín <javim@elretirao.net>

spec/models/tenant_spec.rb

@@ -0,0 +1,64 @@
+require "rails_helper"
+
+describe Tenant do
+  describe "validations" do
+    let(:tenant) { build(:tenant) }
+
+    it "is valid" do
+      expect(tenant).to be_valid
+    end
+
+    it "is not valid without a schema" do
+      tenant.schema = nil
+      expect(tenant).not_to be_valid
+    end
+
+    it "is not valid with an already existing schema" do
+      expect(create(:tenant, schema: "subdomainx")).to be_valid
+      expect(build(:tenant, schema: "subdomainx")).not_to be_valid
+    end
+
+    it "is not valid with an excluded subdomain" do
+      %w[mail public www].each do |subdomain|
+        tenant.schema = subdomain
+        expect(tenant).not_to be_valid
+      end
+    end
+
+    it "is not valid without a name" do
+      tenant.name = ""
+      expect(tenant).not_to be_valid
+    end
+
+    it "is not valid with an already existing name" do
+      expect(create(:tenant, name: "Name X")).to be_valid
+      expect(build(:tenant, name: "Name X")).not_to be_valid
+    end
+  end
+
+  describe "#create_schema" do
+    it "creates a schema creating a record" do
+      create(:tenant, schema: "new")
+      expect { Tenant.switch("new") { nil } }.not_to raise_exception
+    end
+  end
+
+  describe "#rename_schema" do
+    it "renames the schema when updating the schema" do
+      tenant = create(:tenant, schema: "typo")
+      tenant.update!(schema: "notypo")
+
+      expect { Tenant.switch("typo") { nil } }.to raise_exception(Apartment::TenantNotFound)
+      expect { Tenant.switch("notypo") { nil } }.not_to raise_exception
+    end
+  end
+
+  describe "#destroy_schema" do
+    it "drops the schema when destroying a record" do
+      tenant = create(:tenant, schema: "wrong")
+      tenant.destroy!
+
+      expect { Tenant.switch("wrong") { nil } }.to raise_exception(Apartment::TenantNotFound)
+    end
+  end
+end