Adding unit test cases for PShapeOBJ addMaterials() and rgbaValue() by kishore4242 · Pull Request #1486 · processing/processing4

Summary

Adds 5 comprehensive unit tests for PShapeOBJ class to improve test coverage
for material management and color conversion functionality.

Tests Added

• testRgbaValueWhiteColor: Tests color to RGBA conversion
• testAddMaterials: Tests single material addition
• testAddMaterialsMultiple: Tests multiple materials with name verification
• testAddMaterialWithNullValue: Tests edge case with null names
• testAddMaterialDuplicateNameOverwritesHash: Tests duplicate name behavior

All tests pass locally: ./gradlew test