public void Should_replace_expression_transformation_decorator()
{
var callCounter = new int[1];
var context = new TestExpressionExecutionContext(
new ExpressionExecutor(null),
TestExpressionExecutionContext.Step0_Expression);
context
.With(new Func <Expression, System.Linq.Expressions.Expression>(x =>
{
throw new Exception("should have been replaced by next strategy");
}))
.With(new Func <Expression, System.Linq.Expressions.Expression>(x =>
{
throw new Exception("should have been replaced by next strategy");
}))
.With((Expression x) =>
{
callCounter[0]++;
x.ShouldBeSameAs(TestExpressionExecutionContext.Step1_Expression);
return(TestExpressionExecutionContext.Step2_Expression);
})
.Execute()
.ShouldBeSameAs(TestExpressionExecutionContext.Step7_Result);
context.AssertAllMethodsInvokedExacltyOnce(skip: 1);
callCounter.ShouldAllBe(x => x == 1);
}
public void Should_replace_result_to_dynamic_object_projection_decorator()
{
var callCounter = new int[1];
var context = new TestExpressionExecutionContext(
new ExpressionExecutor(null),
TestExpressionExecutionContext.Step0_Expression);
context
.With(new Func <object, IEnumerable <DynamicObject> >(x =>
{
throw new Exception("should have been replaced by next strategy");
}))
.With(new Func <object, IEnumerable <DynamicObject> >(x =>
{
throw new Exception("should have been replaced by next strategy");
}))
.With((object x) =>
{
callCounter[0]++;
x.ShouldBeSameAs(TestExpressionExecutionContext.Step5_Result);
return(TestExpressionExecutionContext.Step6_Result);
})
.Execute()
.ShouldBeSameAs(TestExpressionExecutionContext.Step7_Result);
context.AssertAllMethodsInvokedExacltyOnce(skip: 5);
callCounter.ShouldAllBe(x => x == 1);
}
public void Should_apply_all_custom_strategies_and_return_expected_result()
{
var context = new TestExpressionExecutionContext(
new ExpressionExecutor(null),
TestExpressionExecutionContext.Step0_Expression);
context
.Execute()
.ShouldBeSameAs(TestExpressionExecutionContext.Step7_Result);
context.AssertAllMethodsInvokedExacltyOnce();
}
public void Should_apply_system_expression_preparation_decorator()
{
var customExpression1 = System.Linq.Expressions.Expression.Constant("exp1");
var customExpression2 = System.Linq.Expressions.Expression.Constant("exp2");
var callCounter = new int[3];
var context = new TestExpressionExecutionContext(
new ExpressionExecutor(null),
TestExpressionExecutionContext.Step0_Expression);
context
.With((System.Linq.Expressions.Expression x) =>
{
callCounter[0]++;
x.ShouldBeSameAs(TestExpressionExecutionContext.Step3_Expression);
return(customExpression1);
})
.With((System.Linq.Expressions.Expression x) =>
{
callCounter[1]++;
x.ShouldBeSameAs(customExpression1);
return(customExpression2);
})
.With((System.Linq.Expressions.Expression x) =>
{
callCounter[2]++;
x.ShouldBeSameAs(customExpression2);
return(TestExpressionExecutionContext.Step3_Expression);
})
.Execute()
.ShouldBeSameAs(TestExpressionExecutionContext.Step7_Result);
context.AssertAllMethodsInvokedExacltyOnce();
callCounter.ShouldAllBe(x => x == 1);
}
public void Should_apply_dynamic_object_result_processing_decorator()
{
var customResult1 = new[] { new DynamicObject("result1") };
var customResult2 = new[] { new DynamicObject("result2") };
var callCounter = new int[3];
var context = new TestExpressionExecutionContext(
new ExpressionExecutor(null),
TestExpressionExecutionContext.Step0_Expression);
context
.With((IEnumerable <DynamicObject> x) =>
{
callCounter[0]++;
x.ShouldBeSameAs(TestExpressionExecutionContext.Step7_Result);
return(customResult1);
})
.With((IEnumerable <DynamicObject> x) =>
{
callCounter[1]++;
x.ShouldBeSameAs(customResult1);
return(customResult2);
})
.With((IEnumerable <DynamicObject> x) =>
{
callCounter[2]++;
x.ShouldBeSameAs(customResult2);
return(TestExpressionExecutionContext.Step7_Result);
})
.Execute()
.ShouldBeSameAs(TestExpressionExecutionContext.Step7_Result);
context.AssertAllMethodsInvokedExacltyOnce();
callCounter.ShouldAllBe(x => x == 1);
}