EfCore.TestSupportSchema 1.0.0-preview003

This is a prerelease version of EfCore.TestSupportSchema.

There is a newer prerelease version of this package available.
See the version list below for details.

dotnet add package EfCore.TestSupportSchema --version 1.0.0-preview003

NuGet\Install-Package EfCore.TestSupportSchema -Version 1.0.0-preview003

This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.

<PackageReference Include="EfCore.TestSupportSchema" Version="1.0.0-preview003" />

For projects that support PackageReference, copy this XML node into the project file to reference the package.

paket add EfCore.TestSupportSchema --version 1.0.0-preview003

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: EfCore.TestSupportSchema, 1.0.0-preview003"

#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.

// Install EfCore.TestSupportSchema as a Cake Addin
#addin nuget:?package=EfCore.TestSupportSchema&version=1.0.0-preview003&prerelease

// Install EfCore.TestSupportSchema as a Cake Tool
#tool nuget:?package=EfCore.TestSupportSchema&version=1.0.0-preview003&prerelease

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

TestSupportSchema

This is a TEMPORARY project (it will move into EfCore.TestSupport when EF Core 5 is released) to contain the method EnsureClean which wipes the database schema and replaces it with a database that matches the current DbContext's configuration.

You call this via context.Database.EnsureClean().

Why is this useful?

When you are writing your unit tests you are likely to use the command context.Database.EnsureCreated() to set up the database you use for unit testing. That works for Sqlite in-memory databases, but it you are using a real database, then you need to call below to make sure that the database schema is up to date when you change the DbContext configuration or classes.

context.Database.EnsureDeleted();
context.Database.EnsureCreated();

The problem is the EnsureDeleted/EnsureCreated calls take a LONG time. This feature has the same effect (e.g. correct schema, empty of data) but is MUCH quicker e.g. for a very small database the timings are:

What	First use	Second use
EnsureDeleted/EnsureCreated	10 secs.	10 secs.
EnsureClean	300 ms	30 ms
Respawn (see note below)	170 ms	35 ms

NOTE: Respawn is a NuGet library that removes all the rows in all the tables in a database. Useful if you have already called EnsureClean on the database and just want to remove the rows.

Product	Compatible and additional computed target framework versions.
.NET	net5.0 was computed. net5.0-windows was computed. net6.0 was computed. net6.0-android was computed. net6.0-ios was computed. net6.0-maccatalyst was computed. net6.0-macos was computed. net6.0-tvos was computed. net6.0-windows was computed. net7.0 was computed. net7.0-android was computed. net7.0-ios was computed. net7.0-maccatalyst was computed. net7.0-macos was computed. net7.0-tvos was computed. net7.0-windows was computed. net8.0 was computed. net8.0-android was computed. net8.0-browser was computed. net8.0-ios was computed. net8.0-maccatalyst was computed. net8.0-macos was computed. net8.0-tvos was computed. net8.0-windows was computed.
.NET Core	netcoreapp3.0 was computed. netcoreapp3.1 was computed.
.NET Standard	netstandard2.1 is compatible.
MonoAndroid	monoandroid was computed.
MonoMac	monomac was computed.
MonoTouch	monotouch was computed.
Tizen	tizen60 was computed.
Xamarin.iOS	xamarinios was computed.
Xamarin.Mac	xamarinmac was computed.
Xamarin.TVOS	xamarintvos was computed.
Xamarin.WatchOS	xamarinwatchos was computed.