Package com.studentgui.tools

Class SmokeTest

java.lang.Object

com.studentgui.tools.SmokeTest

public class SmokeTest
extends Object

Minimal automated smoke test for chart rendering and PNG export functionality.

Generates deterministic synthetic assessment data, renders it via JLineGraph, and writes a PNG to the app data folder. Used to verify:

• JFreeChart rendering pipeline functions correctly
• PNG export via JLineGraph.saveChart(java.nio.file.Path, int, int) produces valid image files
• File I/O permissions and folder creation work as expected
• Chart layout and visual appearance match expectations (manual review)

Usage:

 java -cp StudentDataGUI.jar com.studentgui.tools.SmokeTest
 

Expected Output:

 Smoke test wrote chart to: /path/to/app_home/StudentDataFiles/Smoke_Test/plots/SmokeTest-2024-01-15.png
 Exists: true
 

Test Data: Generates 3 synthetic sessions with 28 skills each, using the formula (skillIndex + sessionIndex) % 5 to produce deterministic values in the 0–4 range.

Output Location: app_home/StudentDataFiles/Smoke_Test/plots/SmokeTest-<ISO_DATE>.png

Validation: Success is indicated by "Exists: true" output and a valid 800×400px PNG file at the reported path. Visual inspection of the chart should show 3 line series (2 gray, 1 black) with colored background bands.

See Also:

• JLineGraph.updateWithData(java.util.List<java.util.List<java.lang.Integer>>)
• JLineGraph.saveChart(java.nio.file.Path, int, int)
• Helpers.createFolderHierarchy()

Method Summary

Modifier and Type	Method	Description
static void	main(String[] args)	Entry point for the smoke test.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

main

public static void main(String[] args)
                 throws Exception

Entry point for the smoke test.

Parameters:

args - ignored

Throws:

Exception - on IO or chart errors