refactor: split EmailHandler in 3

InvalidEmailHandler - handle emails with an invalid format
LocalEmailHandler   - handle emails on the local domain
EmailHandler        - handle all other emails by using hkp

This is a preparation to add leap provider email lookup and remove
hkp eventually. But for now we keep the behaviour the same and only
refactor.

2 files changed, 65 insertions, 0 deletions

diff --git a/test/unit/dispatcher_test.rb b/test/integration/dispatcher_test.rb
index 60d252b..60d252b 100644
--- a/test/unit/dispatcher_test.rb
+++ b/test/integration/dispatcher_test.rb
diff --git a/test/unit/request_handlers/local_email_handler_test.rb b/test/unit/request_handlers/local_email_handler_test.rb
new file mode 100644
index 0000000..8f303ec
--- /dev/null
+++ b/test/unit/request_handlers/local_email_handler_test.rb
@@ -0,0 +1,65 @@
+require 'test_helper'
+require 'nickserver/request_handlers/local_email_handler'
+
+class LocalEmailHandlerTest < MiniTest::Test
+
+  def test_no_email
+    assert_refuses
+  end
+
+  def test_remote_email
+    assert_refuses email: 'me@remote.tld', domain: 'local.tld'
+  end
+
+  def test_local_email
+    assert_handles email: 'me@local.tld', domain: 'local.tld'
+  end
+
+  def test_missing_host_header
+    Nickserver::Config.stub :domain, nil do
+      assert_responds_with_error "HTTP request must include a Host header.",
+        email: 'me@local.tld'
+    end
+  end
+
+  protected
+
+  def handler
+    Nickserver::RequestHandlers::LocalEmailHandler.new
+  end
+
+  def source
+    source = Minitest::Mock.new
+    source.expect :query,
+      'response',
+      [Nickserver::EmailAddress]
+    source
+  end
+
+  def assert_handles(opts)
+    Nickserver::CouchDB::Source.stub :new, source do
+      assert_equal 'response', handle(request(opts))
+    end
+  end
+
+  def assert_responds_with_error(msg, opts)
+    response = handle(request(opts))
+    assert_equal 500, response.status
+    assert_equal "500 #{msg}\n", response.content
+  end
+
+  def assert_refuses(opts = {})
+    assert_nil handle(request(opts))
+  end
+
+  def handle(request)
+    handler.call(request)
+  end
+
+  def request(opts = {})
+    params = {'address' => [opts[:email]]}
+    headers = {'Host' => opts[:domain]}
+    Nickserver::Request.new params, headers
+  end
+
+end