public async Task It_throws_object_disposed_exception(bool async)
{
var context = new DbContext(new DbContextOptions <DbContext>());
if (async)
{
await context.DisposeAsync();
}
else
{
context.Dispose();
}
// methods (tests all paths)
Assert.StartsWith(
CoreStrings.ContextDisposed,
Assert.Throws <ObjectDisposedException>(() => context.Add(new object())).Message);
Assert.StartsWith(
CoreStrings.ContextDisposed,
Assert.Throws <ObjectDisposedException>(() => context.Find(typeof(Random), 77)).Message);
Assert.StartsWith(
CoreStrings.ContextDisposed,
Assert.Throws <ObjectDisposedException>(() => context.Attach(new object())).Message);
Assert.StartsWith(
CoreStrings.ContextDisposed,
Assert.Throws <ObjectDisposedException>(() => context.Update(new object())).Message);
Assert.StartsWith(
CoreStrings.ContextDisposed,
Assert.Throws <ObjectDisposedException>(() => context.Remove(new object())).Message);
Assert.StartsWith(
CoreStrings.ContextDisposed,
Assert.Throws <ObjectDisposedException>(() => context.SaveChanges()).Message);
Assert.StartsWith(
CoreStrings.ContextDisposed,
(await Assert.ThrowsAsync <ObjectDisposedException>(() => context.SaveChangesAsync())).Message);
Assert.StartsWith(
CoreStrings.ContextDisposed,
(await Assert.ThrowsAsync <ObjectDisposedException>(() => context.AddAsync(new object()).AsTask())).Message);
Assert.StartsWith(
CoreStrings.ContextDisposed,
(await Assert.ThrowsAsync <ObjectDisposedException>(() => context.FindAsync(typeof(Random), 77).AsTask())).Message);
var methodCount = typeof(DbContext).GetMethods(BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly).Count();
var expectedMethodCount = 42 + 8;
Assert.True(
methodCount == expectedMethodCount,
userMessage: $"Expected {expectedMethodCount} methods on DbContext but found {methodCount}. "
+ "Update test to ensure all methods throw ObjectDisposedException after dispose.");
// getters
Assert.StartsWith(
CoreStrings.ContextDisposed,
Assert.Throws <ObjectDisposedException>(() => context.ChangeTracker).Message);
Assert.StartsWith(
CoreStrings.ContextDisposed,
Assert.Throws <ObjectDisposedException>(() => context.Model).Message);
var expectedProperties = new List <string>
{
nameof(DbContext.ChangeTracker),
nameof(DbContext.ContextId), // By-design, does not throw for disposed context
nameof(DbContext.Database),
nameof(DbContext.Model)
};
Assert.True(
expectedProperties.SequenceEqual(
typeof(DbContext)
.GetProperties()
.Select(p => p.Name)
.OrderBy(s => s)
.ToList()),
userMessage: "Unexpected properties on DbContext. "
+ "Update test to ensure all getters throw ObjectDisposedException after dispose.");
Assert.StartsWith(
CoreStrings.ContextDisposed,
Assert.Throws <ObjectDisposedException>(() => ((IInfrastructure <IServiceProvider>)context).Instance).Message);
}
public void Dispose()
{
_dbContext?.Dispose();
GC.SuppressFinalize(this);
}