Add test for infixOperatorNames

test/unit/infixOperatorNames.test.js

@@ -0,0 +1,41 @@
+suite('infixOperatorNames', function () {
+  const $ = window.test_only_jquery;
+  var mq;
+  setup(function () {
+    const autoOperatorNames = 'arcsinh sin with for';
+    const infixOperatorNames = 'with for';
+    const opts = { autoOperatorNames, infixOperatorNames };
+    mq = MQ.MathField($('<span></span>').appendTo('#mock')[0], opts);
+  });
+
+  function prayWellFormedPoint(pt) {
+    prayWellFormed(pt.parent, pt[L], pt[R]);
+  }
+  function assertLatex(latex) {
+    prayWellFormedPoint(mq.__controller.cursor);
+    assert.equal(mq.latex(), latex);
+  }
+
+  test('for stops scanning', function () {
+    mq.typedText('tfor1/');
+    assertLatex('t\\operatorname{for}\\frac{1}{ }');
+  });
+
+  test('sin does not stop scanning', function () {
+    mq.typedText('tsin1/');
+    assertLatex('\\frac{t\\sin1}{ }');
+  });
+
+  test('arcsinh does not stop scanning', function () {
+    mq.typedText('tarcsinh1/');
+    assertLatex('\\frac{t\\operatorname{arcsinh}1}{ }');
+  });
+
+  test('backspace invalidates word', function () {
+    mq.typedText('tfor1');
+    mq.keystroke('Home').keystroke('Right').keystroke('Del');
+    assertLatex('tor1');
+    mq.keystroke('End').typedText('/');
+    assertLatex('\\frac{tor1}{ }');
+  });
+});