Re: [rspec-users] catching errors, rspec basics
lawl, David has been out of the loop a few e-mails.I left in an extra line.
Thanks for the expansion Ben, adds much more clarity,
On Jan 29, 2008 8:03 PM, David Chelimsky <[EMAIL PROTECTED]> wrote:
> On Jan 29, 2008 6:55 PM, Andrew WC Brown <[EMAIL PROTECTED]> wrote:
> > try it, does the same thing ='(
>
> Shouldn't be the exact same thing. What's the whole error?
>
> Also - what version of rspec? If trunk, do you have the latest (3268)?
>
> >
> >
> >
> > On Jan 29, 2008 7:49 PM, Shane Mingins <[EMAIL PROTECTED]> wrote:
> > >
> > > Are you looking for something like this
> > >
> > >
> > > lambda { @audience.stats = 'Market Goblin' }.should raise_error
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > On 30/01/2008, at 1:48 PM, Andrew WC Brown wrote:
> > >
> > >
> > >
> > >
> > >
> > >
> > > Trying to spec the following but don't know if I'm using the right
> > matcher.
> > > How do I spec? Plz, sugar on tops.
> > >
> > >
> > > Audience.stats
> > > - should have a stats of 80 when passed a flux of 10
> > > - should return an error when passed a string (ERROR - 1)
> > >
> > >
> > > 1)
> > > TypeError in 'Audience.stats should return an error when passed a
> string'
> > > String can't be coerced into Fixnum
> > > ./audience.rb:11:in `*'
> > > ./audience.rb:11:in `stats='
> > > ./audience_spec.rb:29:
> > >
> > >
> > > Finished in 0.006333 seconds
> > >
> > >
> > > 2 examples, 1 failure
> > > monsterbox:spec andrew_wc_brown$
> > >
> > >
> > >
> > >
> > >
> > >
> > > class Audience
> > >
> > > attr_accessor :stats
> > >
> > > def initialize(name = nil,value = nil)
> > > @name ||= 'all'
> > > @value ||= value
> > > end
> > >
> > > def stats=(flux)
> > > @stats = @value * flux / 0.025
> > > end
> > >
> > >
> > > def market_share
> > > "The Market share is for [EMAIL PROTECTED] at a high of [EMAIL
> > > PROTECTED]"
> > > end
> > >
> > > end
> > >
> > >
> > > describe "Audience.stats" do
> > >
> > > before :all do
> > > @audience = Audience.new(nil,20)
> > > end
> > >
> > > it "should have a stats of 80 when passed a flux of 10" do
> > > @audience.stats = 10
> > > @audience.stats.should == 8000
> > > end
> > >
> > > it "should return an error when passed a string" do
> > > @audience.stats = 'Market Goblin'
> > > @audience.stats.should raise_error
> > > end
> > > end
> > > ___
> > > rspec-users mailing list
> > > rspec-users@rubyforge.org
> > > http://rubyforge.org/mailman/listinfo/rspec-users
> > >
> > >
> > >
> > >
> > >
> > > ___
> > > rspec-users mailing list
> > > rspec-users@rubyforge.org
> > > http://rubyforge.org/mailman/listinfo/rspec-users
> > >
> >
> >
> > ___
> > rspec-users mailing list
> > rspec-users@rubyforge.org
> > http://rubyforge.org/mailman/listinfo/rspec-users
> >
> ___
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Re: [rspec-users] catching errors, rspec basics
On Jan 29, 2008 6:55 PM, Andrew WC Brown <[EMAIL PROTECTED]> wrote:
> try it, does the same thing ='(
Shouldn't be the exact same thing. What's the whole error?
Also - what version of rspec? If trunk, do you have the latest (3268)?
>
>
>
> On Jan 29, 2008 7:49 PM, Shane Mingins <[EMAIL PROTECTED]> wrote:
> >
> > Are you looking for something like this
> >
> >
> > lambda { @audience.stats = 'Market Goblin' }.should raise_error
> >
> >
> >
> >
> >
> >
> >
> >
> > On 30/01/2008, at 1:48 PM, Andrew WC Brown wrote:
> >
> >
> >
> >
> >
> >
> > Trying to spec the following but don't know if I'm using the right
> matcher.
> > How do I spec? Plz, sugar on tops.
> >
> >
> > Audience.stats
> > - should have a stats of 80 when passed a flux of 10
> > - should return an error when passed a string (ERROR - 1)
> >
> >
> > 1)
> > TypeError in 'Audience.stats should return an error when passed a string'
> > String can't be coerced into Fixnum
> > ./audience.rb:11:in `*'
> > ./audience.rb:11:in `stats='
> > ./audience_spec.rb:29:
> >
> >
> > Finished in 0.006333 seconds
> >
> >
> > 2 examples, 1 failure
> > monsterbox:spec andrew_wc_brown$
> >
> >
> >
> >
> >
> >
> > class Audience
> >
> > attr_accessor :stats
> >
> > def initialize(name = nil,value = nil)
> > @name ||= 'all'
> > @value ||= value
> > end
> >
> > def stats=(flux)
> > @stats = @value * flux / 0.025
> > end
> >
> >
> > def market_share
> > "The Market share is for [EMAIL PROTECTED] at a high of [EMAIL
> > PROTECTED]"
> > end
> >
> > end
> >
> >
> > describe "Audience.stats" do
> >
> > before :all do
> > @audience = Audience.new(nil,20)
> > end
> >
> > it "should have a stats of 80 when passed a flux of 10" do
> > @audience.stats = 10
> > @audience.stats.should == 8000
> > end
> >
> > it "should return an error when passed a string" do
> > @audience.stats = 'Market Goblin'
> > @audience.stats.should raise_error
> > end
> > end
> > ___
> > rspec-users mailing list
> > rspec-users@rubyforge.org
> > http://rubyforge.org/mailman/listinfo/rspec-users
> >
> >
> >
> >
> >
> > ___
> > rspec-users mailing list
> > rspec-users@rubyforge.org
> > http://rubyforge.org/mailman/listinfo/rspec-users
> >
>
>
> ___
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>
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Re: [rspec-users] catching errors, rspec basics
Sematics.. the method is never returning an error, it raises one. So
you can't say @audience.stats="dsfds" and expect to see an exception
returned right?
Since an exception is being raised you have to think of another way of
testing it aside from checking it's return value... So you could do
something like:
an_error_was_raised = false
begin
@audience.stats = 'Market Goblin'
rescue
an_error_was_raised = true
end
an_error_was_raised.should == true
I am not suggesting you do this. This is just to illustrate how you
would going about testing to see if an error was raised. The
raise_error matcher is slightly more complicated in order to be able to
ensure certain errors are raised but this is the general idea. So the
lambda does not return an error but the lambda is passed into the
matcher so it can perform a similar operation as the code above
illustrates. I hope that clarified things a bit.
Here is another example for good measure with a lambda involved.. you
can then see how a lambda how be useful in this situation:
an_error_was_raised = false
my_code = lambda { @audience.stats = 'Market Goblin' }
begin
my_code.call
rescue
an_error_was_raised = true
end
an_error_was_raised.should == true
Better?
-Ben
Andrew WC Brown wrote:
> So if I understand correctly,
>
> The following didn't raise an error:
>
> @audience.stats = 'Market Goblin'
> @audience.stats.should raise_error
>
> because audience.stats didn't return an error.
>
> Where as lambda will return an error.
>
> On Jan 29, 2008 10:58 PM, Ben Mabey <[EMAIL PROTECTED]
> > wrote:
>
> Andrew WC Brown wrote:
> > oh, I left in:
> >
> > it "should return an error when passed a string" do
> > @audience.stats = 'Market Goblin'
> > lambda [EMAIL PROTECTED] = 'Market Goblin'}.should raise_error
> > end
> >
> > when yours is:
> >
> > it "should return an error when passed a string" do
> > lambda [EMAIL PROTECTED] = 'Market Goblin'}.should raise_error
> > end
> >
> > I've seen lambda before but not sure what it does.
>
> A lambda in ruby is like a block or a Proc. There are some
> differences
> between them, but for this simple use you can just think of it as a
> block of code that will be passed to the 'raise_error' matcher
> that then
> runs that block of code checking to see if an Exception is raised when
> it is ran. You can also pass in the specific exception type to be
> more
> specific.
>
> As a personal preference I like to alias lambda to 'running' in my
> spec_helper.rb... I think this reads a lot better:
> running [EMAIL PROTECTED] = 'Market Goblin'}.should raise_error
>
> For more on lambdas refer to the pickaxe. If you want more detailed
> information of the subtle differences between them, Procs, blocks, and
> methods check this out:
> http://innig.net/software/ruby/closures-in-ruby.rb
>
> -Ben
>
>
> ___
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>
>
>
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Re: [rspec-users] catching errors, rspec basics
So if I understand correctly, The following didn't raise an error: @audience.stats = 'Market Goblin' @audience.stats.should raise_error because audience.stats didn't return an error. Where as lambda will return an error. On Jan 29, 2008 10:58 PM, Ben Mabey <[EMAIL PROTECTED]> wrote: > Andrew WC Brown wrote: > > oh, I left in: > > > > it "should return an error when passed a string" do > > @audience.stats = 'Market Goblin' > > lambda [EMAIL PROTECTED] = 'Market Goblin'}.should raise_error > > end > > > > when yours is: > > > > it "should return an error when passed a string" do > > lambda [EMAIL PROTECTED] = 'Market Goblin'}.should raise_error > > end > > > > I've seen lambda before but not sure what it does. > > A lambda in ruby is like a block or a Proc. There are some differences > between them, but for this simple use you can just think of it as a > block of code that will be passed to the 'raise_error' matcher that then > runs that block of code checking to see if an Exception is raised when > it is ran. You can also pass in the specific exception type to be more > specific. > > As a personal preference I like to alias lambda to 'running' in my > spec_helper.rb... I think this reads a lot better: > running [EMAIL PROTECTED] = 'Market Goblin'}.should raise_error > > For more on lambdas refer to the pickaxe. If you want more detailed > information of the subtle differences between them, Procs, blocks, and > methods check this out: > http://innig.net/software/ruby/closures-in-ruby.rb > > -Ben > > > ___ > rspec-users mailing list > rspec-users@rubyforge.org > http://rubyforge.org/mailman/listinfo/rspec-users > ___ rspec-users mailing list rspec-users@rubyforge.org http://rubyforge.org/mailman/listinfo/rspec-users
Re: [rspec-users] catching errors, rspec basics
Andrew WC Brown wrote: > oh, I left in: > > it "should return an error when passed a string" do > @audience.stats = 'Market Goblin' > lambda [EMAIL PROTECTED] = 'Market Goblin'}.should raise_error > end > > when yours is: > > it "should return an error when passed a string" do > lambda [EMAIL PROTECTED] = 'Market Goblin'}.should raise_error > end > > I've seen lambda before but not sure what it does. A lambda in ruby is like a block or a Proc. There are some differences between them, but for this simple use you can just think of it as a block of code that will be passed to the 'raise_error' matcher that then runs that block of code checking to see if an Exception is raised when it is ran. You can also pass in the specific exception type to be more specific. As a personal preference I like to alias lambda to 'running' in my spec_helper.rb... I think this reads a lot better: running [EMAIL PROTECTED] = 'Market Goblin'}.should raise_error For more on lambdas refer to the pickaxe. If you want more detailed information of the subtle differences between them, Procs, blocks, and methods check this out: http://innig.net/software/ruby/closures-in-ruby.rb -Ben ___ rspec-users mailing list rspec-users@rubyforge.org http://rubyforge.org/mailman/listinfo/rspec-users
Re: [rspec-users] catching errors, rspec basics
oh, I left in: it "should return an error when passed a string" do @audience.stats = 'Market Goblin' lambda [EMAIL PROTECTED] = 'Market Goblin'}.should raise_error end when yours is: it "should return an error when passed a string" do lambda [EMAIL PROTECTED] = 'Market Goblin'}.should raise_error end I've seen lambda before but not sure what it does. On Jan 29, 2008 7:59 PM, Shane Mingins <[EMAIL PROTECTED]> wrote: > H > I just ran this and 2 examples, 0 failures > > class Audience > > attr_accessor :stats > > def initialize(name = nil,value = nil) > @name ||= 'all' > @value ||= value > end > > def stats=(flux) > @stats = @value * flux / 0.025 > end > > def market_share > "The Market share is for [EMAIL PROTECTED] at a high of [EMAIL PROTECTED]" > end > > end > > > describe "Audience.stats" do > > before :all do > @audience = Audience.new(nil,20) > end > > it "should have a stats of 80 when passed a flux of 10" do > @audience.stats = 10 > @audience.stats.should == 8000 > end > > it "should return an error when passed a string" do > lambda [EMAIL PROTECTED] = 'Market Goblin'}.should raise_error > end > > end > On 30/01/2008, at 1:55 PM, Andrew WC Brown wrote: > > try it, does the same thing ='( > > > > > > ___ > rspec-users mailing list > rspec-users@rubyforge.org > http://rubyforge.org/mailman/listinfo/rspec-users > ___ rspec-users mailing list rspec-users@rubyforge.org http://rubyforge.org/mailman/listinfo/rspec-users
Re: [rspec-users] catching errors, rspec basics
H I just ran this and 2 examples, 0 failures class Audience attr_accessor :stats def initialize(name = nil,value = nil) @name ||= 'all' @value ||= value end def stats=(flux) @stats = @value * flux / 0.025 end def market_share "The Market share is for [EMAIL PROTECTED] at a high of [EMAIL PROTECTED]" end end describe "Audience.stats" do before :all do @audience = Audience.new(nil,20) end it "should have a stats of 80 when passed a flux of 10" do @audience.stats = 10 @audience.stats.should == 8000 end it "should return an error when passed a string" do lambda [EMAIL PROTECTED] = 'Market Goblin'}.should raise_error end end On 30/01/2008, at 1:55 PM, Andrew WC Brown wrote: try it, does the same thing ='( ___ rspec-users mailing list rspec-users@rubyforge.org http://rubyforge.org/mailman/listinfo/rspec-users
Re: [rspec-users] catching errors, rspec basics
try it, does the same thing ='(
On Jan 29, 2008 7:49 PM, Shane Mingins <[EMAIL PROTECTED]> wrote:
> Are you looking for something like this
> lambda { @audience.stats = 'Market Goblin' }.should raise_error
>
>
> On 30/01/2008, at 1:48 PM, Andrew WC Brown wrote:
>
> Trying to spec the following but don't know if I'm using the right
> matcher.
> How do I spec? Plz, sugar on tops.
>
> Audience.stats
> - should have a stats of 80 when passed a flux of 10
> - should return an error when passed a string (ERROR - 1)
>
> 1)
> TypeError in 'Audience.stats should return an error when passed a string'
> String can't be coerced into Fixnum
> ./audience.rb:11:in `*'
> ./audience.rb:11:in `stats='
> ./audience_spec.rb:29:
>
> Finished in 0.006333 seconds
>
> 2 examples, 1 failure
> monsterbox:spec andrew_wc_brown$
>
>
>
> class Audience
>
> attr_accessor :stats
>
> def initialize(name = nil,value = nil)
> @name ||= 'all'
> @value ||= value
> end
>
> def stats=(flux)
> @stats = @value * flux / 0.025
> end
>
> def market_share
> "The Market share is for [EMAIL PROTECTED] at a high of [EMAIL PROTECTED]"
> end
>
> end
>
> describe "Audience.stats" do
>
> before :all do
> @audience = Audience.new(nil,20)
> end
>
> it "should have a stats of 80 when passed a flux of 10" do
> @audience.stats = 10
> @audience.stats.should == 8000
> end
>
> it "should return an error when passed a string" do
> @audience.stats = 'Market Goblin'
> @audience.stats.should raise_error
> end
> end
> ___
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>
>
>
>
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Re: [rspec-users] catching errors, rspec basics
Are you looking for something like this
lambda { @audience.stats = 'Market Goblin' }.should raise_error
On 30/01/2008, at 1:48 PM, Andrew WC Brown wrote:
Trying to spec the following but don't know if I'm using the right
matcher.
How do I spec? Plz, sugar on tops.
Audience.stats
- should have a stats of 80 when passed a flux of 10
- should return an error when passed a string (ERROR - 1)
1)
TypeError in 'Audience.stats should return an error when passed a
string'
String can't be coerced into Fixnum
./audience.rb:11:in `*'
./audience.rb:11:in `stats='
./audience_spec.rb:29:
Finished in 0.006333 seconds
2 examples, 1 failure
monsterbox:spec andrew_wc_brown$
class Audience
attr_accessor :stats
def initialize(name = nil,value = nil)
@name ||= 'all'
@value ||= value
end
def stats=(flux)
@stats = @value * flux / 0.025
end
def market_share
"The Market share is for [EMAIL PROTECTED] at a high of [EMAIL PROTECTED]"
end
end
describe "Audience.stats" do
before :all do
@audience = Audience.new(nil,20)
end
it "should have a stats of 80 when passed a flux of 10" do
@audience.stats = 10
@audience.stats.should == 8000
end
it "should return an error when passed a string" do
@audience.stats = 'Market Goblin'
@audience.stats.should raise_error
end
end
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[rspec-users] catching errors, rspec basics
Trying to spec the following but don't know if I'm using the right matcher. How do I spec? Plz, sugar on tops. Audience.stats - should have a stats of 80 when passed a flux of 10 - should return an error when passed a string (ERROR - 1) 1) TypeError in 'Audience.stats should return an error when passed a string' String can't be coerced into Fixnum ./audience.rb:11:in `*' ./audience.rb:11:in `stats=' ./audience_spec.rb:29: Finished in 0.006333 seconds 2 examples, 1 failure monsterbox:spec andrew_wc_brown$ class Audience attr_accessor :stats def initialize(name = nil,value = nil) @name ||= 'all' @value ||= value end def stats=(flux) @stats = @value * flux / 0.025 end def market_share "The Market share is for [EMAIL PROTECTED] at a high of [EMAIL PROTECTED]" end end describe "Audience.stats" do before :all do @audience = Audience.new(nil,20) end it "should have a stats of 80 when passed a flux of 10" do @audience.stats = 10 @audience.stats.should == 8000 end it "should return an error when passed a string" do @audience.stats = 'Market Goblin' @audience.stats.should raise_error end end ___ rspec-users mailing list rspec-users@rubyforge.org http://rubyforge.org/mailman/listinfo/rspec-users
