event_emitter: add test cases

1 files changed, 31 insertions, 0 deletions

diff --git a/test/plum/test_event_emitter.rb b/test/plum/test_event_emitter.rb
new file mode 100644
index 0000000..01d6001
--- /dev/null
+++ b/test/plum/test_event_emitter.rb
@@ -0,0 +1,31 @@
+require "test_helper"
+
+using BinaryString
+class EventEmitterTest < Minitest::Test
+  def test_simple
+    ret = nil
+    emitter = new_emitter
+    emitter.on(:event) {|arg| ret = arg }
+    emitter.callback(:event, 123)
+    assert_equal(123, ret)
+  end
+
+  def test_multiple
+    ret1 = nil; ret2 = nil
+    emitter = new_emitter
+    emitter.on(:event) {|arg| ret1 = arg }
+    emitter.on(:event) {|arg| ret2 = arg }
+    emitter.callback(:event, 123)
+    assert_equal(123, ret1)
+    assert_equal(123, ret2)
+  end
+
+  private
+  def new_emitter
+    klass = Class.new {
+      include EventEmitter
+      public *EventEmitter.private_instance_methods
+    }
+    klass.new
+  end
+end