Please help. write the code using the test cases: @Test public void test_4_0() { RideRequest request = new RideRequest("John , Scarborough , 35.0 , N "); request.setRideDetails(" Airport "); assertEquals("Set Ride Details method failed. ", "Airport", request.getRideDetails()); } @Test public void test_4_1() { RideRequest request = new RideRequest("John , Scarborough , 35.0 , N "); request.setRideDetails( null); assertEquals("Set Ride Details method failed. ", "", request.getRideDetails()); } @Test public void test_5_0() { RideRequest request = new RideRequest("John , Scarborough , 35.0 , N "); request.setHasDiscount(true); assertTrue("Set has Discount failed, should be true", request.isHasDiscount()); } @Test public void test_5_1() { RideRequest request = new RideRequest(" Kate , Woodbine , 35.25 , Y "); request.setHasDiscount(false); assertFalse("Set has Discount failed, should be False", request.isHasDiscount()); } @Test public void test_6_0() { RideRequest request = new RideRequest(" Kate , Woodbine , 35.25 , Y "); RideRequest.setTaxrate(0.1); // Assuming 10% tax rate assertEquals("Error:set Tax rate failed",0.1, RideRequest.getTaxrate(), 0.001); } @Test public void test_6_1() { RideRequest request = new RideRequest(" Kate , Woodbine , 35.25 , Y "); RideRequest.setDiscount(0.2); // Assuming 20% discount rate assertEquals("Error:set Discount failed",0.2, RideRequest.getDiscount(), 0.001); }

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An operating system (OS) is the software which manages hardware and resources, like CPU, storage and memory. The OS bridges the applications and hardware and makes the connections between all of your software and the hardware resources.