Hi,
I'm having a problem getting a unit test to run. It's quite a simple
one, based on a sample project that I developed and that does actually
work. It's loosely based on the Apple Temperature Converter project.
I have a Converter class that has a float property called
originalTemperature. It also has a method called convertCToF that
takes an originalTemperature and returns the converted temperature,
also as a float. So I am calling this using temperatureInF =
instanceOfConverter.convertCToF. As I say, this works fine.
I created a test case that creates an instance of Converter, then sets
its originalTemp value, then tries to get back the converted value:
testConverter = Converter.new;
[testConverter setValue:[NSNumber numberWithFloat:25.0]
forKey:@"originalTemp"]; // Builds OK to here
NSNumber *newTemperatureInF = [testConverter convertCToF]; // This is
where I get the error "Incompatible types in initialization"
STAssertEquals(77.0f, [newTemperatureInF floatValue], @"F value should
be 25, and test value was %f", [newTemperatureInF floatValue]);
I am importing Converter.h in my TCTests.m file (where this method is
located) and I have selected it for linking in the Detail pane for the
project.
I'm confused because I am passing in a float, the method takes in and
returns a float. NSNumber ought to be able to cope with a returned
float. I'm clearly making a very basic error but have bashed my head
against it to the point where I have the phrase "Incompatible types"
in reverse burned onto my forehead. Google was not my friend on this
occasion.
Can anyone guide me out of this black hole?
Thanks,
Ian.
--
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