module RatatuiRuby::TestHelper::TestDoubles

Test doubles for view testing.

View tests verify widget rendering without a real terminal. Real frames draw to the screen. Real rects come from terminal dimensions. Mocking both by hand is tedious.

This mixin provides MockFrame to capture rendered widgets and StubRect to supply fixed dimensions.

Use them to test view logic in isolation.

Example

frame = MockFrame.new
area = StubRect.new(width: 60, height: 20)
MyView.new.call(state, tui, frame, area)

widget = frame.rendered_widgets.first[:widget]
assert_equal "Dashboard", widget.block.title

Constants

MockFrame

Mock frame for view tests.

Captures widgets passed to render_widget for later inspection.

Example

frame = MockFrame.new
View::Log.new.call(state, tui, frame, area)
widget = frame.rendered_widgets.first[:widget]
assert_equal "Event Log", widget.block.title

StubRect

Stub rect with fixed dimensions.

x: Integer left edge (default: 0).
y: Integer top edge (default: 0).
width: Integer width in cells (default: 80).
height: Integer height in cells (default: 24).

Example

area = StubRect.new(width: 60, height: 20)