wehub-resource-sync
59 lines
2.6 KiB
Zig
59 lines
2.6 KiB
Zig
//! split-collapse tests: the manual tween's model math (easing endpoints,
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//! frame ticks, completion) — the runtime-tween coverage lives with the
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//! runtime's own layout-animation tests.
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const std = @import("std");
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const main = @import("main.zig");
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const testing = std.testing;
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const Model = main.Model;
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test "manual tween eases the fraction from expanded to collapsed and completes" {
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var model = main.initModel(true);
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try testing.expectEqual(main.expanded_fraction, model.fraction);
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main.update(&model, .toggle);
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try testing.expect(model.collapsed);
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try testing.expect(model.tween != null);
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// First tick stamps the start; fraction still at the origin.
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main.update(&model, .{ .frame_tick = 1_000_000_000 });
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try testing.expectEqual(main.expanded_fraction, model.fraction);
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// Halfway: strictly between the endpoints.
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main.update(&model, .{ .frame_tick = 1_000_000_000 + 90_000_000 });
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try testing.expect(model.fraction < main.expanded_fraction);
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try testing.expect(model.fraction > main.collapsed_fraction);
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// Past the duration: snapped to the target, tween cleared.
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main.update(&model, .{ .frame_tick = 1_000_000_000 + 200_000_000 });
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try testing.expectEqual(main.collapsed_fraction, model.fraction);
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try testing.expect(model.tween == null);
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}
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test "runtime mode flips only the resting flag; the tween hook declares the target" {
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var model = main.initModel(false);
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main.update(&model, .toggle);
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// The model's fraction is the controlled `value` (last echo), not
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// the target — the runtime moves it; no manual tween ever opens.
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try testing.expectEqual(main.expanded_fraction, model.fraction);
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try testing.expect(model.collapsed);
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try testing.expect(model.tween == null);
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// The echo path is the only writer of the fraction in runtime mode.
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main.update(&model, .{ .split_resized = 0.21 });
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try testing.expectEqual(@as(f32, 0.21), model.fraction);
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}
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test "markup mode derives the split's declared resting fraction from the collapsed flag" {
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// The markup view binds value="{pane_fraction}" with resize-duration,
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// so flipping the flag IS the collapse: the declared value moves to
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// the target and the runtime tween eases the rendered fraction there.
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var model = main.initModel(false);
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try testing.expectEqual(main.expanded_fraction, model.pane_fraction());
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main.update(&model, .toggle);
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try testing.expectEqual(main.collapsed_fraction, model.pane_fraction());
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main.update(&model, .toggle);
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try testing.expectEqual(main.expanded_fraction, model.pane_fraction());
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}
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