James Wampler
b4a666ebf0
Extract IMicCheckDbContext so DB access can be mocked with Moq instead of the InMemory provider, per project testing guidelines. Add shared async DbSet test doubles (TestSupport/) to back the mocks. Rewrite HTTP-pipeline tests (WebApplicationFactory) to exercise controllers and auth handlers directly instead of running the web server. Drop DbContext/seeder tests that only made sense against a real provider, and remove stale duplicate test files left over from a namespace move.
57 lines
2.5 KiB
C#
57 lines
2.5 KiB
C#
using System.Linq.Expressions;
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using MicCheck.Api.Data;
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using Microsoft.EntityFrameworkCore;
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using Moq;
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namespace MicCheck.Api.Tests.Unit.TestSupport;
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public static class MockDbSetFactory
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{
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public static Mock<DbSet<T>> Create<T>(List<T> data) where T : class
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{
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var queryable = data.AsQueryable();
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var mockSet = new Mock<DbSet<T>>();
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mockSet.As<IAsyncEnumerable<T>>()
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.Setup(m => m.GetAsyncEnumerator(It.IsAny<CancellationToken>()))
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.Returns(() => new TestAsyncEnumerator<T>(data.GetEnumerator()));
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mockSet.As<IQueryable<T>>().Setup(m => m.Provider).Returns(() => new TestAsyncQueryProvider<T>(data.AsQueryable().Provider));
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mockSet.As<IQueryable<T>>().Setup(m => m.Expression).Returns(() => data.AsQueryable().Expression);
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mockSet.As<IQueryable<T>>().Setup(m => m.ElementType).Returns(queryable.ElementType);
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mockSet.As<IQueryable<T>>().Setup(m => m.GetEnumerator()).Returns(() => data.GetEnumerator());
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mockSet.Setup(m => m.Add(It.IsAny<T>())).Callback<T>(item => data.Add(item));
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mockSet.Setup(m => m.AddRange(It.IsAny<IEnumerable<T>>())).Callback<IEnumerable<T>>(items => data.AddRange(items));
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mockSet.Setup(m => m.Remove(It.IsAny<T>())).Callback<T>(item => data.Remove(item));
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mockSet.Setup(m => m.RemoveRange(It.IsAny<IEnumerable<T>>())).Callback<IEnumerable<T>>(items =>
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{
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foreach (var item in items.ToList())
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data.Remove(item);
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});
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return mockSet;
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}
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public static void SetupDbSet<T>(this Mock<IMicCheckDbContext> context, Expression<Func<IMicCheckDbContext, DbSet<T>>> selector, List<T> data)
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where T : class =>
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context.Setup(selector).Returns(Create(data).Object);
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/// <summary>
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/// Sets up a DbSet whose Add() simulates database-generated identity assignment (needed because
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/// Moq does not run SaveChanges and entity Id properties are commonly init-only).
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/// </summary>
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public static void SetupDbSetWithGeneratedIds<T>(this Mock<IMicCheckDbContext> context, Expression<Func<IMicCheckDbContext, DbSet<T>>> selector, List<T> data)
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where T : class
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{
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var idProperty = typeof(T).GetProperty("Id") ?? throw new InvalidOperationException($"{typeof(T).Name} has no Id property.");
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var mockSet = Create(data);
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mockSet.Setup(m => m.Add(It.IsAny<T>())).Callback<T>(item =>
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{
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idProperty.SetValue(item, data.Count + 1);
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data.Add(item);
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});
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context.Setup(selector).Returns(mockSet.Object);
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}
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}
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