adds a test for min-rt #546

tests/jsPsych/min-rt.test.js

@@ -0,0 +1,58 @@
+const root = '../../';
+const utils = require('../testing-utils.js');
+
+// ideally, use fake timers for this test, but 'modern' timers that work
+// with performance.now() break something in the first test. wait for fix?
+//jest.useFakeTimers('modern');
+//jest.useFakeTimers();
+
+beforeEach(function(){
+  require(root + 'jspsych.js');
+  require(root + 'plugins/jspsych-html-keyboard-response.js');
+});
+
+describe('minimum_valid_rt parameter', function(){
+  test('has a default value of 0', function(){
+    var t = {
+      type: 'html-keyboard-response',
+      stimulus: 'foo'
+    }
+
+    var t2 = {
+      type: 'html-keyboard-response',
+      stimulus: 'bar'
+    }
+
+    jsPsych.init({timeline: [t,t2]});
+
+    expect(jsPsych.getDisplayElement().innerHTML).toMatch('foo');
+    utils.pressKey(32);
+    expect(jsPsych.getDisplayElement().innerHTML).toMatch('bar');
+    utils.pressKey(32);
+  });
+
+  test('correctly prevents fast responses when set', function(done){
+    var t = {
+      type: 'html-keyboard-response',
+      stimulus: 'foo'
+    }
+
+    var t2 = {
+      type: 'html-keyboard-response',
+      stimulus: 'bar'
+    }
+
+    jsPsych.init({timeline: [t,t2], minimum_valid_rt: 100});
+
+    expect(jsPsych.getDisplayElement().innerHTML).toMatch('foo');
+    utils.pressKey(32);
+    expect(jsPsych.getDisplayElement().innerHTML).toMatch('foo');
+    setTimeout(function(){
+      utils.pressKey(32);
+      expect(jsPsych.getDisplayElement().innerHTML).toMatch('bar');
+      utils.pressKey(32);
+      done();
+    }, 100)
+    
+  });
+});