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, 73 deletions

diff --git a/test/unit/dispatcher_test.rb b/test/unit/dispatcher_test.rb
deleted file mode 100644
index 60d252b..0000000
--- a/test/unit/dispatcher_test.rb
+++ /dev/null
@@ -1,73 +0,0 @@
-require 'test_helper'
-require 'nickserver/dispatcher'
-
-class Nickserver::DispatcherTest < Minitest::Test
-
-  def test_empty_query
-    handle
-    assert_response status: 404, content: "404 Not Found\n"
-  end
-
-  def test_invalid_query
-    handle address: ['asdf']
-    assert_response status: 500, content: "500 Not a valid address\n"
-  end
-
-  def test_missing_domain
-    handle address: ['valid@email.tld']
-    assert_response status: 500, content: "500 HTTP request must include a Host header.\n"
-  end
-
-  def test_email_from_hkp
-    handle address: ['valid@email.tld'], headers: { "Host" => "http://nickserver.me" }
-    source = Minitest::Mock.new
-    source.expect :query, Nickserver::Response.new(200, "fake content"), [Nickserver::EmailAddress]
-    Nickserver::Hkp::Source.stub :new, source do
-      assert_response status: 200, content: "200 fake content"
-    end
-  end
-
-  def test_fingerprint_to_short
-    handle fingerprint: ['44F2F455E28']
-    assert_response status: 500, content: "500 Fingerprint invalid: 44F2F455E28\n"
-  end
-
-  def test_fingerprint_is_not_hex
-    handle fingerprint: ['X36E738D69173C13Z709E44F2F455E2824D18DDX']
-    assert_response status: 500,
-      content: "500 Fingerprint invalid: X36E738D69173C13Z709E44F2F455E2824D18DDX\n"
-  end
-
-  def test_get_key_with_fingerprint_from_hkp
-    handle fingerprint: ['E36E738D69173C13D709E44F2F455E2824D18DDF']
-    source = Minitest::Mock.new
-    source.expect :get_key_by_fingerprint,
-      Nickserver::Response.new(200, "fake fingerprint"),
-      ['E36E738D69173C13D709E44F2F455E2824D18DDF']
-    Nickserver::Hkp::Source.stub :new, source do
-      assert_response status: 200, content: "200 fake fingerprint"
-    end
-  end
-
-  protected
-
-  def handle(params = {})
-    @headers = params.delete(:headers) || {}
-    @params = Hash[ params.map{ |k,v| [k.to_s, v] } ]
-  end
-
-  def assert_response(args)
-    responder.expect :respond, nil, [args[:status], args[:content]]
-    dispatcher.respond_to @params, @headers
-    responder.verify
-  end
-
-  def dispatcher
-    Nickserver::Dispatcher.new responder
-  end
-
-  def responder
-    @responder ||= Minitest::Mock.new
-  end
-
-end
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