public async Task UseMiddleware_AddsMiddleware()
{
IServiceProvider serviceProvider = new MockServiceProvider()
.With <MockMiddleware>(new MockMiddleware());
OkraAppBuilder app = new OkraAppBuilder(serviceProvider);
var middlewareCallList = new List <string>();
var middlewareCallContextList = new List <AppLaunchContext>();
var options = new MockMiddlewareOptions(middlewareCallList, middlewareCallContextList);
app.UseMiddleware <MockMiddleware, MockMiddlewareOptions>(options);
app.Use(next =>
{
return(context =>
{
middlewareCallList.Add("Next");
middlewareCallContextList.Add(context);
return next(context);
});
});
var appContext = new MockAppLaunchContext();
var pipeline = app.Build();
await pipeline(appContext);
Assert.Equal(new string[] { "Middleware", "Next" }, middlewareCallList);
Assert.Equal(new AppLaunchContext[] { appContext, appContext }, middlewareCallContextList);
}
public void Constructor_SetsApplicationServicesProperty()
{
IServiceProvider serviceProvider = new MockServiceProvider();
OkraAppBuilder appBuilder = new OkraAppBuilder(serviceProvider);
Assert.Equal(serviceProvider, appBuilder.ApplicationServices);
}
public void Use_ThrowsException_IfFunctionIsNull()
{
IServiceProvider serviceProvider = new MockServiceProvider();
OkraAppBuilder appBuilder = new OkraAppBuilder(serviceProvider);
Assert.Throws <ArgumentNullException>("middleware", () => appBuilder.Use(null));
}
public async Task Use_AddsMiddlewareUsingInlineSyntax()
{
IServiceProvider serviceProvider = new MockServiceProvider();
OkraAppBuilder app = new OkraAppBuilder(serviceProvider);
var middlewareCallList = new List <string>();
var middlewareCallContextList = new List <AppLaunchContext>();
app.Use((context, next) =>
{
middlewareCallList.Add("Inline");
middlewareCallContextList.Add(context);
return(next());
});
app.Use(next =>
{
return(context =>
{
middlewareCallList.Add("Next");
middlewareCallContextList.Add(context);
return next(context);
});
});
var appContext = new MockAppLaunchContext();
var pipeline = app.Build();
await pipeline(appContext);
Assert.Equal(new string[] { "Inline", "Next" }, middlewareCallList);
Assert.Equal(new AppLaunchContext[] { appContext, appContext }, middlewareCallContextList);
}
public async Task Build_BuildsTheOverallPipeline()
{
var serviceProvider = new MockServiceProvider();
var appBuilder = new OkraAppBuilder(serviceProvider);
var middlewareCallList = new List <string>();
var middlewareCallContextList = new List <AppLaunchContext>();
appBuilder.Use(next =>
{
return(context =>
{
middlewareCallList.Add("First");
middlewareCallContextList.Add(context);
return next(context);
});
});
appBuilder.Use(next =>
{
return(context =>
{
middlewareCallList.Add("Second");
middlewareCallContextList.Add(context);
return Task.FromResult <bool>(true);
});
});
appBuilder.Use(next =>
{
return(context =>
{
middlewareCallList.Add("Third");
middlewareCallContextList.Add(context);
return next(context);
});
});
var appContext = new MockAppLaunchContext();
var pipeline = appBuilder.Build();
await pipeline(appContext);
Assert.Equal(new string[] { "First", "Second" }, middlewareCallList);
Assert.Equal(new AppLaunchContext[] { appContext, appContext }, middlewareCallContextList);
}
public async Task Build_BuildsAPipelineThatHasNoFinalStep()
{
var serviceProvider = new MockServiceProvider();
var appBuilder = new OkraAppBuilder(serviceProvider);
var middlewareCallList = new List <string>();
var middlewareCallContextList = new List <AppLaunchContext>();
appBuilder.Use(next =>
{
return(context =>
{
middlewareCallList.Add("First");
middlewareCallContextList.Add(context);
return next(context);
});
});
appBuilder.Use(next =>
{
return(context =>
{
middlewareCallList.Add("Second");
middlewareCallContextList.Add(context);
return next(context);
});
});
var appContext = new MockAppLaunchContext();
var pipeline = appBuilder.Build();
await pipeline(appContext);
Assert.Equal(new string[] { "First", "Second" }, middlewareCallList);
Assert.Equal(new AppLaunchContext[] { appContext, appContext }, middlewareCallContextList);
}