Defect Description:
In the simulation page of " Expression Trees" experiment, when we don"t enter the values and click on the "=" button , still the simulation is working instead an error message should be displayed on the screen as to enter the values and then press the "=" button
Actual Result :
In the simulation page of " Expression Trees" experiment, when we don"t enter the values and click on the "=" button , still the simulation is working
Defect Description: In the simulation page of " Expression Trees" experiment, when we don"t enter the values and click on the "=" button , still the simulation is working instead an error message should be displayed on the screen as to enter the values and then press the "=" button
Actual Result : In the simulation page of " Expression Trees" experiment, when we don"t enter the values and click on the "=" button , still the simulation is working
Environment: OS: Windows 7, Ubuntu-16.04,Centos-6 Browsers: Firefox-42.0,Chrome-47.0,chromium-45.0 Bandwidth : 100Mbps Hardware Configuration:8GBRAM , Processor:i5
Test Step Link: https://github.com/Virtual-Labs/data-structures-iiith/blob/master/test-cases/integration_test-cases/Expression%20Trees/Expression%20Trees_06_Simulation.org
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