To add a collaborator to this project you will need to use the Relish gem to add the collaborator via a terminal command. Soon you'll be able to also add collaborators here!
More about adding a collaborator`contain_exactly` matcher
The contain_exactly
matcher provides a way to test arrays against each other in a way
that disregards differences in the ordering between the actual and expected array.
For example:
expect([1, 2, 3]).to contain_exactly(2, 3, 1) # pass
expect([:a, :c, :b]).to contain_exactly(:a, :c ) # fail
This matcher is also available as match_array
, which expects the expected array to be
given as a single array argument rather than as individual splatted elements. The above
could also be written as:
expect([1, 2, 3]).to match_array [2, 3, 1] # pass
expect([:a, :c, :b]).to match_array [:a, :c] # fail
- Scenarios
-
- Array is expected to contain every value
-
- Given
-
a file named "contain_exactly_matcher_spec.rb" with:
RSpec.describe [1, 2, 3] do it { is_expected.to contain_exactly(1, 2, 3) } it { is_expected.to contain_exactly(1, 3, 2) } it { is_expected.to contain_exactly(2, 1, 3) } it { is_expected.to contain_exactly(2, 3, 1) } it { is_expected.to contain_exactly(3, 1, 2) } it { is_expected.to contain_exactly(3, 2, 1) } # deliberate failures it { is_expected.to contain_exactly(1, 2, 1) } end
- When
-
I run
rspec contain_exactly_matcher_spec.rb
- Then
- the output should contain "7 examples, 1 failure"
- And
-
the output should contain:
Failure/Error: it { is_expected.to contain_exactly(1, 2, 1) } expected collection contained: [1, 1, 2] actual collection contained: [1, 2, 3] the missing elements were: [1] the extra elements were: [3]
- Array is not expected to contain every value
-
- Given
-
a file named "contain_exactly_matcher_spec.rb" with:
RSpec.describe [1, 2, 3] do it { is_expected.to_not contain_exactly(1, 2, 3, 4) } it { is_expected.to_not contain_exactly(1, 2) } # deliberate failures it { is_expected.to_not contain_exactly(1, 3, 2) } end
- When
-
I run
rspec contain_exactly_matcher_spec.rb
- Then
- the output should contain "3 examples, 1 failure"
- And
-
the output should contain:
Failure/Error: it { is_expected.to_not contain_exactly(1, 3, 2) } expected [1, 2, 3] not to contain exactly 1, 3, and 2
Last published about 7 years ago by myronmarston.