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only call fake when the parameter match

0 votes
I'm in the process of evaluating typemock. Here is my question


util.GetConfigItem("DontMock", ref historyFromDaysAgo);
util.GetConfigItem("Mock", ref historyBeginHours);
util.GetConfigItem("DontMock1", ref historyEndHours);
util.GetConfigItem("Whatever1", ref extendedHours2Show);
util.GetConfigItem("Mock1", ref historyBeginHours);
util.GetConfigItem("whatever2", ref extendedHours2Show);

Util is a static class, and I only want to fake this method when the parameter is Mock or Mock1. I tried something like this

int configIntVal = 0;
Isolate.WhenCalled(() => util.GetConfigItem("Mock", ref configIntVal)).WithExactArguments().DoInstead((callContext) =>
{
int? retVal = callContext.Parameters[1] as int?;
string configItem = callContext.Parameters[0] as string;
callContext.Parameters[1] = 2;
});






it will call this fake method all the time, what is the best way to handle something like this
asked by ben1628
Report User
 (2k points)

3 Answers

0 votes
Hi Ben, and welcome to Typemock.

What you need is to set conditional behavior - you can see more in the developer's guide under the c# API (direct link: https://www.typemock.com/Docs/UserGuide/ ... tsAAA.html).

You should end up with something like: 
Isolate.WhenCalled((string s) => util.GetConfigItem(s, ref configIntVal)).
    AndArgumentsMatch(s => s == "Mock" || s == "Mock2").
    WillReturn(fakeValue)


Please let me know if this helps, or if you need any further help with your evaluation.

Thanks,
Doron
Typemock Support
answered by doron
Report User
 (17.2k points)
0 votes
Hmmm, I am not that far off. This was one of the things I tried, and it was basically the same as what you suggested. However, it didn't seem to work for me.

I'll tried again and let you know.
answered by ben1628
Report User
 (2k points)
0 votes
okay, I figure out what my problem is

I had

Isolate.WhenCalled((string s) => util.GetConfigItem("Mock", ref configIntVal))
.....

and I ran into parameter out of range error, and so I didn't go further than that.


The following code is working fine:

Isolate.WhenCalled((string s) => util.GetConfigItem(s, ref configIntVal))
.AndArgumentsMatch((s) => s == "Mock" || s == "Mock1")
.DoInstead((callContext) =>
{
callContext.Parameters[1] = 2;
});


it set the ref to the correct value and bypass everything else that are not Mock or Mock1.


Thanks for your help.
answered by ben1628
Report User
 (2k points)
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