wehub-resource-sync
95 lines
3.6 KiB
C#
95 lines
3.6 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Threading.Tasks;
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using CloakBrowser.Human;
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using Xunit;
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namespace CloakBrowser.Tests;
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/// <summary>
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/// Tests for the headed no-viewport scroll fallback (port of upstream 9c3ed2d /
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/// v0.4.1). Headed launches default to no_viewport so <c>page.ViewportSize</c> is
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/// null; human scroll must fall back to the live <c>window.innerWidth/innerHeight</c>
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/// instead of crashing with "Viewport size not available".
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/// </summary>
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public class ScrollFallbackTests
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{
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private sealed class FakeRawMouse : IRawMouse
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{
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public Task MoveAsync(double x, double y) => Task.CompletedTask;
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public Task DownAsync() => Task.CompletedTask;
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public Task UpAsync() => Task.CompletedTask;
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public Task WheelAsync(double dx, double dy) => Task.CompletedTask;
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}
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/// <summary>Scroll page whose ViewportSize is null (headed) but live window dims resolve.</summary>
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private sealed class NoViewportPage : IRawScrollPage
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{
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private readonly (int, int)? _live;
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public int LiveCalls { get; private set; }
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public NoViewportPage((int, int)? live) => _live = live;
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public (int Width, int Height)? ViewportSize => null;
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public Task<(int Width, int Height)?> GetLiveWindowSizeAsync()
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{
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LiveCalls++;
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return Task.FromResult(_live);
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}
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}
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// Zero out the timing ranges so the scroll loop runs instantly in tests.
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private static HumanConfig FastConfig() => new()
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{
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IdleBetweenActions = false,
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ScrollPreMoveDelay = (0, 0),
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ScrollPauseFast = (0, 0),
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ScrollPauseSlow = (0, 0),
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ScrollSettleDelay = (0, 0),
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ScrollOvershootChance = 0,
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MouseMinSteps = 1,
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MouseMaxSteps = 2,
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};
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[Fact]
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public async Task Null_viewport_falls_back_to_live_window_dimensions()
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{
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var page = new NoViewportPage((1280, 800));
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var raw = new FakeRawMouse();
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// Element far below the fold so a scroll is required (forces use of viewport height).
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BoundingBox? boxBelowFold = new BoundingBox(100, 5000, 50, 20);
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Func<Task<BoundingBox?>> getBox = () => Task.FromResult(boxBelowFold);
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var result = await HumanScroll.HumanScrollIntoViewAsync(
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page, raw, getBox, cursorX: 0, cursorY: 0, FastConfig());
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Assert.Equal(1, page.LiveCalls); // the fallback was consulted
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Assert.True(result.DidScroll); // and it actually scrolled (no crash)
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}
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[Fact]
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public async Task Null_viewport_and_no_live_dims_throws()
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{
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var page = new NoViewportPage(null); // live fallback also unavailable
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var raw = new FakeRawMouse();
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Func<Task<BoundingBox?>> getBox = () => Task.FromResult<BoundingBox?>(new BoundingBox(0, 0, 10, 10));
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var ex = await Assert.ThrowsAsync<InvalidOperationException>(() =>
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HumanScroll.HumanScrollIntoViewAsync(page, raw, getBox, 0, 0, FastConfig()));
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Assert.Equal("Viewport size not available", ex.Message);
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}
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[Fact]
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public async Task Null_viewport_with_zero_height_live_dims_throws()
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{
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// A live read that returns a 0 height is treated as unusable (matches the
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// Python `not viewport.get("height")` guard).
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var page = new NoViewportPage((1280, 0));
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var raw = new FakeRawMouse();
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Func<Task<BoundingBox?>> getBox = () => Task.FromResult<BoundingBox?>(new BoundingBox(0, 0, 10, 10));
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await Assert.ThrowsAsync<InvalidOperationException>(() =>
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HumanScroll.HumanScrollIntoViewAsync(page, raw, getBox, 0, 0, FastConfig()));
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}
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}
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