test: bar divider translated to single bar

__tests__/index.test.ts

@@ -64,6 +64,14 @@ describe('#convert', () => {
 
         expect(result).toMatch('+');
       });
+
+      it('converts bar divider preserving it', () => {
+        const mathml = mathmlStrings.moDividerOperator;
+
+        const result = MathMLToLaTeX.convert(mathml);
+
+        expect(result).toMatch('x=4/5');
+      });
     });
 
     describe('with Glyph operator', () => {

__tests__/mocks/mathmlStrings.ts

@@ -64,6 +64,18 @@ export const moWithSimpleOperator = `
 </root>
 `;
 
+export const moDividerOperator = `
+<math>
+  <mi>x</mi>
+  <mo>=</mo>
+  <mn>4</mn>
+  <mrow>
+    <mo>/</mo>
+  </mrow>
+  <mn>5</mn>
+</math>
+`;
+
 export const moWithGlyphOperator = `
 <root>
   <math>