Joseph Doherty
110 lines
3.8 KiB
C#
110 lines
3.8 KiB
C#
using Bunit;
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using Microsoft.AspNetCore.Components;
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using ZB.MOM.WW.ScadaBridge.CentralUI.Components.Shared;
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namespace ZB.MOM.WW.ScadaBridge.CentralUI.Tests.Shared;
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/// <summary>
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/// bUnit tests for the <see cref="OffsetPager"/> reusable pagination bar (T35a).
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/// The component is purely presentational — it emits <c>PageChanged</c> callbacks
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/// and renders disabled states; the host page owns page-number and query state.
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/// </summary>
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public class OffsetPagerTests : BunitContext
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{
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// ── PrevDisabled_OnFirstPage ──────────────────────────────────────────────
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[Fact]
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public void PrevDisabled_OnFirstPage()
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{
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var cut = Render<OffsetPager>(ps => ps
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.Add(p => p.Page, 1)
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.Add(p => p.HasNextPage, true));
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var prev = cut.Find("[data-test='pager-prev']");
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Assert.NotNull(prev.GetAttribute("disabled"));
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}
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// ── NextDisabled_WhenNoNextPage ───────────────────────────────────────────
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[Fact]
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public void NextDisabled_WhenNoNextPage()
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{
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var cut = Render<OffsetPager>(ps => ps
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.Add(p => p.Page, 3)
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.Add(p => p.HasNextPage, false));
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var next = cut.Find("[data-test='pager-next']");
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Assert.NotNull(next.GetAttribute("disabled"));
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}
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// ── Next_Click_EmitsPagePlusOne ───────────────────────────────────────────
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[Fact]
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public void Next_Click_EmitsPagePlusOne()
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{
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int? emitted = null;
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var cut = Render<OffsetPager>(ps => ps
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.Add(p => p.Page, 2)
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.Add(p => p.HasNextPage, true)
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.Add(p => p.PageChanged,
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EventCallback.Factory.Create<int>(this, v => emitted = v)));
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cut.Find("[data-test='pager-next']").Click();
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Assert.Equal(3, emitted);
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}
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// ── Prev_Click_EmitsPageMinusOne ─────────────────────────────────────────
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[Fact]
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public void Prev_Click_EmitsPageMinusOne()
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{
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int? emitted = null;
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var cut = Render<OffsetPager>(ps => ps
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.Add(p => p.Page, 2)
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.Add(p => p.HasNextPage, false)
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.Add(p => p.PageChanged,
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EventCallback.Factory.Create<int>(this, v => emitted = v)));
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cut.Find("[data-test='pager-prev']").Click();
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Assert.Equal(1, emitted);
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}
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// ── Summary_RendersPageOfTotal ────────────────────────────────────────────
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[Fact]
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public void Summary_RendersPageOfTotal()
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{
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var cut = Render<OffsetPager>(ps => ps
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.Add(p => p.Page, 2)
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.Add(p => p.PageSize, 50)
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.Add(p => p.TotalCount, 230)
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.Add(p => p.HasNextPage, true));
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var summary = cut.Find("[data-test='pager-summary']");
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Assert.Contains("Page 2 of 5", summary.TextContent);
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Assert.Contains("230 total", summary.TextContent);
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}
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// ── BothDisabled_WhenDisabled ─────────────────────────────────────────────
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[Fact]
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public void BothDisabled_WhenDisabled()
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{
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var cut = Render<OffsetPager>(ps => ps
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.Add(p => p.Page, 3)
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.Add(p => p.HasNextPage, true)
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.Add(p => p.Disabled, true));
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var prev = cut.Find("[data-test='pager-prev']");
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var next = cut.Find("[data-test='pager-next']");
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Assert.NotNull(prev.GetAttribute("disabled"));
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Assert.NotNull(next.GetAttribute("disabled"));
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}
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}
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