Add Let's Encrypt client

Part of adding Let's Encrypt certificates for pages domains

Add acme-client gem

Client is being initialized by private key stored in secrets.yml
Let's Encrypt account is being created lazily.
If it's already created, Acme::Client just gets account_kid by
calling new_account method

Make Let's Encrypt client an instance
Wrap order and challenge classes

1 files changed, 19 insertions, 0 deletions

diff --git a/spec/support/helpers/lets_encrypt_helpers.rb b/spec/support/helpers/lets_encrypt_helpers.rb
new file mode 100644
index 00000000000..7f0886b451c
--- /dev/null
+++ b/spec/support/helpers/lets_encrypt_helpers.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module LetsEncryptHelpers
+  def stub_lets_encrypt_client
+    client = instance_double('Acme::Client')
+
+    allow(client).to receive(:new_account)
+    allow(client).to receive(:terms_of_service).and_return(
+      "https://letsencrypt.org/documents/LE-SA-v1.2-November-15-2017.pdf"
+    )
+
+    allow(Acme::Client).to receive(:new).with(
+      private_key: kind_of(OpenSSL::PKey::RSA),
+      directory: ::Gitlab::LetsEncrypt::Client::STAGING_DIRECTORY_URL
+    ).and_return(client)
+
+    client
+  end
+end