test: Add more Ruby fixture tests for crypto

packages/scanner/test/fixtures/ruby/fixture/Gemfile

@@ -2,5 +2,5 @@ source "https://rubygems.org"
 
 gem 'byebug'
 gem 'rake'
-gem 'appmap', github: 'applandinc/appmap-ruby', branch: 'master'
+gem 'appmap', github: 'applandinc/appmap-ruby', branch: 'feat/crypto-algorithm'
 gem 'minitest'

packages/scanner/test/fixtures/ruby/fixture/Gemfile.lock

@@ -1,7 +1,7 @@
 GIT
   remote: https://github.com/applandinc/appmap-ruby.git
-  revision: cda70741cdd594f92863d2c32842c9627af38506
-  branch: master
+  revision: 216c45468bdf50251fd8fcfd45849acaf997bd73
+  branch: feat/crypto-algorithm
   specs:
     appmap (0.83.4)
       activesupport

packages/scanner/test/fixtures/ruby/fixture/lib/crypt/command.rb

@@ -12,11 +12,15 @@ def self.encrypt_aes_128_cbc
     end
 
     # @label command
-    def self.encrypt_aes_256_gcm(record_id)
+    def self.encrypt_aes_256_gcm(record_id, key: nil)
       data = "Very, very confidential data"
       cipher = OpenSSL::Cipher.new('aes-256-gcm')
       cipher.encrypt
-      key = cipher.random_key
+      if key
+        cipher.key = key
+      else
+        key = cipher.random_key
+      end
       iv = cipher.random_iv
       cipher.auth_data = record_id.to_s
 

packages/scanner/test/fixtures/ruby/fixture/test/crypt_test.rb

@@ -9,7 +9,19 @@ def test_crypt_aes_128_cbc
   end
 
   def test_crypt_aes_256_gcm
-    ciphertext = Crypt::Command.encrypt_aes_256_gcm(:record_id)
+    ciphertext = Crypt::Command.encrypt_aes_256_gcm('test_crypt_aes_256_gcm')
+    assert_equal 28, ciphertext.length
+  end
+
+  def test_hard_coded_key
+    key = Base64.decode64 "f9hmz/Sh93xIdpfiU7ja385+1QtLf5GVX4MaJwjqh0E="
+    ciphertext = Crypt::Command.encrypt_aes_256_gcm('test_hard_coded_key', key: key)
+    assert_equal 28, ciphertext.length
+  end
+
+  def test_random_key
+    key = OpenSSL::Random.random_bytes(32)
+    ciphertext = Crypt::Command.encrypt_aes_256_gcm('test_hard_coded_key', key: key)
     assert_equal 28, ciphertext.length
   end
 end