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|
module RSpec::Matchers::BuiltIn
RSpec.describe All do
it_behaves_like 'an RSpec value matcher', :valid_value => ['A', 'A', 'A'], :invalid_value => ['A', 'A', 'B'], :disallows_negation => true do
let(:matcher) { all( eq('A') ) }
end
describe 'description' do
it 'provides a description' do
matcher = all( eq('A') )
expect(matcher.description).to eq 'all eq "A"'
end
end
context 'when single matcher is given' do
describe 'expect(...).to all(expected)' do
it 'can pass' do
expect(['A', 'A', 'A']).to all( eq('A') )
end
describe 'failure message' do
context 'when the matcher has single-line failure message' do
it 'returns the index of the failed object' do
expect {
expect(['A', 'A', 'A', 5, 'A']).to all( be_a(String) )
}.to fail_with(dedent <<-EOS)
|expected ["A", "A", "A", 5, "A"] to all be a kind of String
|
| object at index 3 failed to match:
| expected 5 to be a kind of String
EOS
end
it 'returns the indexes of all failed objects, not just the first one' do
expect {
expect(['A', 'A', 'A', 5, 6]).to all( be_a(String) )
}.to fail_with(dedent <<-EOS)
|expected ["A", "A", "A", 5, 6] to all be a kind of String
|
| object at index 3 failed to match:
| expected 5 to be a kind of String
|
| object at index 4 failed to match:
| expected 6 to be a kind of String
EOS
end
end
context 'when the matcher has multi-line failure message' do
it 'returns the index of the failed object' do
expect {
expect(['A', 'A', 'A', 'C', 'A']).to all( eq('A') )
}.to fail_with(dedent <<-EOS)
|expected ["A", "A", "A", "C", "A"] to all eq "A"
|
| object at index 3 failed to match:
| expected: "A"
| got: "C"
|
| (compared using ==)
EOS
end
it 'returns the indexes of all failed objects, not just the first one' do
expect {
expect(['A', 'B', 'A', 'C', 'A']).to all( eq('A') )
}.to fail_with(dedent <<-EOS)
|expected ["A", "B", "A", "C", "A"] to all eq "A"
|
| object at index 1 failed to match:
| expected: "A"
| got: "B"
|
| (compared using ==)
|
| object at index 3 failed to match:
| expected: "A"
| got: "C"
|
| (compared using ==)
EOS
end
end
end
end
end
context 'when composed matcher is given' do
describe 'expect(...).to all(expected)' do
it 'can pass' do
expect([3, 4, 7, 8]).to all( be_between(2, 5).or be_between(6, 9) )
end
end
describe 'failure message' do
context 'when a single object fails' do
it 'returns the index of the failed object for the composed matcher' do
expect {
expect([3, 4, 7, 28]).to all( be_between(2, 5).or be_between(6, 9) )
}.to fail_with(dedent <<-EOS)
|expected [3, 4, 7, 28] to all be between 2 and 5 (inclusive) or be between 6 and 9 (inclusive)
|
| object at index 3 failed to match:
| expected 28 to be between 2 and 5 (inclusive)
|
| ...or:
|
| expected 28 to be between 6 and 9 (inclusive)
EOS
end
end
context 'when a multiple objects fails' do
it 'returns the indexes of the failed objects for the composed matcher, not just the first one' do
expect {
expect([3, 4, 27, 22]).to all( be_between(2, 5).or be_between(6, 9) )
}.to fail_with(dedent <<-EOS)
|expected [3, 4, 27, 22] to all be between 2 and 5 (inclusive) or be between 6 and 9 (inclusive)
|
| object at index 2 failed to match:
| expected 27 to be between 2 and 5 (inclusive)
|
| ...or:
|
| expected 27 to be between 6 and 9 (inclusive)
|
| object at index 3 failed to match:
| expected 22 to be between 2 and 5 (inclusive)
|
| ...or:
|
| expected 22 to be between 6 and 9 (inclusive)
EOS
end
end
end
end
context 'when composed in another matcher' do
it 'returns the indexes of the failed objects only' do
expect {
expect([[false], [true]]).to all( all( be(true) ) )
}.to fail_with(dedent <<-EOS)
|expected [[false], [true]] to all all equal true
|
| object at index 0 failed to match:
| expected [false] to all equal true
|
| object at index 0 failed to match:
| expected true
| got false
EOS
end
end
shared_examples "making a copy" do |copy_method|
context "when making a copy via `#{copy_method}`" do
let(:base_matcher) { eq(3) }
let(:all_matcher) { all( base_matcher ) }
let(:copied_matcher) { all_matcher.__send__(copy_method) }
it "uses a copy of the base matcher" do
expect(copied_matcher).not_to equal(all_matcher)
expect(copied_matcher.matcher).not_to equal(base_matcher)
expect(copied_matcher.matcher).to be_a(base_matcher.class)
expect(copied_matcher.matcher.expected).to eq(3)
end
context 'when using a custom matcher' do
let(:base_matcher) { custom_include(3) }
it 'copies custom matchers properly so they can work even though they have singleton behavior' do
expect(copied_matcher).not_to equal(all_matcher)
expect(copied_matcher.matcher).not_to equal(base_matcher)
expect([[3]]).to copied_matcher
expect { expect([[4]]).to copied_matcher }.to fail_including("expected [4]")
end
end
end
end
include_examples 'making a copy', :clone
include_examples 'making a copy', :dup
context "when using a matcher instance that memoizes state multiple times in a composed expression" do
it "works properly in spite of the memoization" do
expect {
expect(["foo", "bar", "a"]).to all( have_string_length(3) )
}.to fail
end
context "when passing a compound expression" do
it "works properly in spite of the memoization" do
expect {
expect(["foo", "bar", "a"]).to all( have_string_length(2).or have_string_length(3) )
}.to fail
end
end
end
context 'when the actual data does not define #each_with_index' do
let(:actual) { 5 }
it 'returns a failure message' do
expect {
expect(actual).to all(be_a(String))
}.to fail_with("expected #{actual.inspect} to all be a kind of String, but was not iterable")
end
end
context 'when the actual data does not include enumerable but defines #each_with_index' do
let(:actual) do
obj = Object.new
def obj.each_with_index(&_block); [5].each_with_index { |o, i| yield(o, i) }; end
obj
end
it 'passes properly' do
expect(actual).to all(be_a(Integer))
end
it 'fails properly' do
expect {
expect(actual).to all(be_even)
}.to fail_with(/to all be even/)
end
end
end
end
|
