Merge branch 'fix-domains_is_in' of github.com:cm-dyoshikawa/valid_email2 into nested_domains

Author: phoet

spec/address_spec.rb

@@ -105,6 +105,53 @@
     end
   end
 
+  describe "#disposable_domain?" do
+    let(:domain_hierarchy_max_depth) { 10 }
+
+    context "when the disposable domain does not have subdomains" do
+      let(:disposable_domain) { ValidEmail2.disposable_emails.find { |domain| domain.count(".") == 1 } }
+
+      it "is true if the domain is in the disposable_emails list" do
+        address = described_class.new("foo@#{disposable_domain}", nil, nil, domain_hierarchy_max_depth:)
+        expect(address.disposable_domain?).to eq true
+      end
+
+      it "is true if the domain is a subdomain of a disposable domain" do
+        address = described_class.new("foo@sub.#{disposable_domain}", nil, nil, domain_hierarchy_max_depth:)
+        expect(address.disposable_domain?).to eq true
+      end
+
+      it "is true if the domain is a deeply nested subdomain of a disposable domain" do
+        address = described_class.new("foo@sub3.sub2.sub1.#{disposable_domain}", nil, nil, domain_hierarchy_max_depth:)
+        expect(address.disposable_domain?).to eq true
+      end
+
+      it "is false if the domain is not in the disposable_emails list" do
+        address = described_class.new("foo@example.com", nil, nil, domain_hierarchy_max_depth:)
+        expect(address.disposable_domain?).to eq false
+      end
+    end
+
+    context "when the disposable domain has subdomains" do
+      let(:disposable_domain) { ValidEmail2.disposable_emails.find { |domain| domain.count(".") > 1 } }
+
+      it "is true if the domain is in the disposable_emails list" do
+        address = described_class.new("foo@#{disposable_domain}", nil, nil, domain_hierarchy_max_depth:)
+        expect(address.disposable_domain?).to eq true
+      end
+
+      it "is true if the domain is a subdomain of a disposable domain" do
+        address = described_class.new("foo@sub.#{disposable_domain}", nil, nil, domain_hierarchy_max_depth:)
+        expect(address.disposable_domain?).to eq true
+      end
+
+      it "is true if the domain is a deeply nested subdomain of a disposable domain" do
+        address = described_class.new("foo@sub3.sub2.sub1.#{disposable_domain}", nil, nil, domain_hierarchy_max_depth:)
+        expect(address.disposable_domain?).to eq true
+      end
+    end
+  end
+
   describe "caching" do
     let(:email_address) { "example@ymail.com" }
     let(:dns_instance) { ValidEmail2::Dns.new }