make utils an internal package

internal/utils/host_test.go

@@ -0,0 +1,49 @@
+package utils
+
+import (
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Hostname", func() {
+	It("gets the hostname from an URL", func() {
+		h, err := HostnameFromAddr("https://quic.clemente.io/file.dat?param=true&param2=false")
+		Expect(err).ToNot(HaveOccurred())
+		Expect(h).To(Equal("quic.clemente.io"))
+	})
+
+	It("gets the hostname from an URL with a port number", func() {
+		h, err := HostnameFromAddr("https://quic.clemente.io:6121/file.dat")
+		Expect(err).ToNot(HaveOccurred())
+		Expect(h).To(Equal("quic.clemente.io"))
+	})
+
+	It("gets the hostname from an URL containing username and password", func() {
+		h, err := HostnameFromAddr("https://user:password@quic.clemente.io:6121/file.dat")
+		Expect(err).ToNot(HaveOccurred())
+		Expect(h).To(Equal("quic.clemente.io"))
+	})
+
+	It("gets local hostnames", func() {
+		h, err := HostnameFromAddr("https://localhost/file.dat")
+		Expect(err).ToNot(HaveOccurred())
+		Expect(h).To(Equal("localhost"))
+	})
+
+	It("gets the hostname for other protocols", func() {
+		h, err := HostnameFromAddr("ftp://quic.clemente.io:6121/file.dat")
+		Expect(err).ToNot(HaveOccurred())
+		Expect(h).To(Equal("quic.clemente.io"))
+	})
+
+	It("gets an IP", func() {
+		h, err := HostnameFromAddr("https://1.3.3.7:6121/file.dat")
+		Expect(err).ToNot(HaveOccurred())
+		Expect(h).To(Equal("1.3.3.7"))
+	})
+
+	It("errors on malformed URLs", func() {
+		_, err := HostnameFromAddr("://quic.clemente.io:6121/file.dat")
+		Expect(err).To(HaveOccurred())
+	})
+})