Fix test conditions

Author: remcoder

src/__tests__/interpreter.ts

@@ -142,28 +142,26 @@ describe('.g0', () => {
 
     expect(job.paths.length).toEqual(0);
     expect(job.inprogressPath?.travelType).toEqual('Extrusion');
-  });
+  }); 
 
-  test('assigns the travel type if the extrusion is a retraction', () => {
+  test('will not result in a path when there is no movement (retraction)', () => {
     const command = new GCodeCommand('G0 E-2', 'g0', { e: -2 });
     const interpreter = new Interpreter();
     const job = new Job();
 
     interpreter.g0(command, job);
 
     expect(job.paths.length).toEqual(0);
-    expect(job.inprogressPath?.travelType).toEqual('Travel');
   });
 
-  test('assigns the travel type if the extrusion is a retraction', () => {
-    const command = new GCodeCommand('G0 E-2', 'g0', { e: -2 });
+  test('will not result in a path when there is no movement (deretraction)', () => {
+    const command = new GCodeCommand('G0 E4', 'g0', { e: 4 });
     const interpreter = new Interpreter();
     const job = new Job();
 
     interpreter.g0(command, job);
 
     expect(job.paths.length).toEqual(0);
-    expect(job.inprogressPath?.travelType).toEqual('Travel');
   });
 
   test('starts a new path if the travel type changes from Travel to Extrusion', () => {