tests: coverage for small utility widgets (66 cases)
- slider: SliderBase/FloatSlider/IntegerSlider mapping, clamping,
display transforms, drag math, tristate, label substitution
- layouts: FlowLayout wrap math, ColumnedGridLayout placement
- combos: all standard combos, node combo box, color label combo
- misc: menu, file/path fields, toolbar, color button/wheel widgets,
bezier, resizable scrollbar, hand-movable view, node value tree,
pixel sampler, collapse button, clickable/focusable labels
Mike-Solar
e9488904b3
