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|
module RSpec
module Mocks
RSpec.describe "argument matchers matching" do
let(:a_double) { double }
after(:each, :reset => true) do
reset a_double
end
describe "boolean" do
it "accepts true as boolean" do
expect(a_double).to receive(:random_call).with(boolean)
a_double.random_call(true)
end
it "accepts false as boolean" do
expect(a_double).to receive(:random_call).with(boolean)
a_double.random_call(false)
end
it "rejects non boolean", :reset => true do
expect(a_double).to receive(:random_call).with(boolean)
expect {
a_double.random_call("false")
}.to fail_including "expected: (boolean)"
end
end
describe "kind_of" do
it "accepts fixnum as kind_of(Numeric)" do
expect(a_double).to receive(:random_call).with(kind_of(Numeric))
a_double.random_call(1)
end
it "accepts float as kind_of(Numeric)" do
expect(a_double).to receive(:random_call).with(kind_of(Numeric))
a_double.random_call(1.5)
end
it "handles non matching kinds nicely", :reset => true do
expect(a_double).to receive(:random_call).with(kind_of(Numeric))
expect {
a_double.random_call(true)
}.to fail_including "expected: (kind of Numeric)"
end
it "matches arguments that have defined `kind_of?` to return true" do
fix_num = double(:kind_of? => true)
expect(a_double).to receive(:random_call).with(kind_of(Numeric))
a_double.random_call(fix_num)
end
it "handles a class thats overridden ===" do
allow(Numeric).to receive(:===) { false }
fix_num = double(:kind_of? => true)
expect(a_double).to receive(:random_call).with(kind_of(Numeric))
a_double.random_call(fix_num)
end
end
describe "instance_of" do
it "accepts float as instance_of(Float)" do
expect(a_double).to receive(:random_call).with(instance_of(Float))
a_double.random_call(1.1)
end
it "does NOT accept float as instance_of(Numeric)" do
expect(a_double).not_to receive(:random_call).with(instance_of(Numeric))
a_double.random_call(1.1)
end
it "does NOT accept integer as instance_of(Numeric)" do
expect(a_double).not_to receive(:random_call).with(instance_of(Numeric))
a_double.random_call(1)
end
it "rejects non numeric", :reset => true do
expect(a_double).to receive(:random_call).with(an_instance_of(Numeric))
expect { a_double.random_call("1") }.to fail
end
it "rejects non string", :reset => true do
expect(a_double).to receive(:random_call).with(an_instance_of(String))
expect { a_double.random_call(123) }.to fail
end
it "handles non matching instances nicely", :reset => true do
expect(a_double).to receive(:random_call).with(instance_of(Numeric))
expect {
a_double.random_call(1.5)
}.to fail_including "expected: (an_instance_of(Numeric))"
end
end
describe "anything" do
it "accepts string as anything" do
expect(a_double).to receive(:random_call).with("a", anything, "c")
a_double.random_call("a", "whatever", "c")
end
it "doesn't accept no arguments" do
expect(a_double).to_not receive(:random_call).with(anything)
a_double.random_call
end
it "handles non matching instances nicely", :reset => true do
expect(a_double).to receive(:random_call).with(anything)
expect { a_double.random_call }.to fail_including "expected: (anything)"
end
end
describe "duck_type" do
it "matches duck type with one method" do
expect(a_double).to receive(:random_call).with(duck_type(:length))
a_double.random_call([])
end
it "matches duck type with two methods" do
expect(a_double).to receive(:random_call).with(duck_type(:abs, :div))
a_double.random_call(1)
end
it "rejects goose when expecting a duck", :reset => true do
expect(a_double).to receive(:random_call).with(duck_type(:abs, :div))
expect {
a_double.random_call("I don't respond to :abs or :div")
}.to fail_including "expected: (duck_type(:abs, :div))"
end
end
describe "any_args" do
context "as the only arg passed to `with`" do
before { expect(a_double).to receive(:random_call).with(any_args) }
it "matches no args" do
a_double.random_call
end
it "matches one arg" do
a_double.random_call("a string")
end
it "matches many args" do
a_double.random_call("a string", :other, 3)
end
end
context "as the last of three args" do
before { expect(a_double).to receive(:random_call).with(1, /foo/, any_args) }
it "matches a call of two args when it matches the first two explicit args" do
a_double.random_call(1, "food")
end
it "matches a call of three args when it matches the first two explicit args" do
a_double.random_call(1, "food", :more)
end
it "matches a call of four args when it matches the first two explicit args" do
a_double.random_call(1, "food", :more, :args)
end
it "does not match a call where the first two args do not match", :reset => true do
expect { a_double.random_call(1, "bar", 2, 3) }.to fail_including "expected: (1, /foo/, *(any args))"
end
it "does not match a call of no args", :reset => true do
expect { a_double.random_call }.to fail_including "expected: (1, /foo/, *(any args))"
end
end
context "as the first of three args" do
before { expect(a_double).to receive(:random_call).with(any_args, 1, /foo/) }
it "matches a call of two args when it matches the last two explicit args" do
a_double.random_call(1, "food")
end
it "matches a call of three args when it matches the last two explicit args" do
a_double.random_call(nil, 1, "food")
end
it "matches a call of four args when it matches the last two explicit args" do
a_double.random_call(:some, :args, 1, "food")
end
it "does not match a call where the last two args do not match", :reset => true do
expect { a_double.random_call(1, "bar", 2, 3) }.to fail_including "expected: (*(any args), 1, /foo/)"
end
it "does not match a call of no args", :reset => true do
expect { a_double.random_call }.to fail_including "expected: (*(any args), 1, /foo/)"
end
end
context "as the middle of three args" do
before { expect(a_double).to receive(:random_call).with(1, any_args, /foo/) }
it "matches a call of two args when it matches the first and last args" do
a_double.random_call(1, "food")
end
it "matches a call of three args when it matches the first and last args" do
a_double.random_call(1, nil, "food")
end
it "matches a call of four args when it matches the first and last args" do
a_double.random_call(1, :some, :args, "food")
end
it "does not match a call where the first and last args do not match", :reset => true do
expect { a_double.random_call(nil, "bar", 2, 3) }.to fail_including "expected: (1, *(any args), /foo/)"
end
it "does not match a call of no args", :reset => true do
expect { a_double.random_call }.to fail_including "expected: (1, *(any args), /foo/)"
end
end
context "when passed twice" do
it 'immediately signals that this is invalid', :reset => true do
expect {
expect(a_double).to receive(:random_call).with(any_args, 1, any_args)
}.to raise_error(ArgumentError, /any_args/)
end
end
end
describe "no_args" do
it "matches no args against no_args" do
expect(a_double).to receive(:random_call).with(no_args)
a_double.random_call
end
it "fails no_args with one arg", :reset => true do
expect(a_double).to receive(:msg).with(no_args)
expect { a_double.msg(37) }.to fail_including "expected: (no args)"
end
context "when passed with other arguments" do
it 'immediately signals that this is invalid', :reset => true do
expect {
expect(a_double).to receive(:random_call).with(no_args, 3)
}.to raise_error(ArgumentError, /no_args/)
end
end
end
describe "hash_including" do
it "matches hash with hash_including same hash" do
expect(a_double).to receive(:random_call).with(hash_including(:a => 1))
a_double.random_call(:a => 1)
end
it "fails hash_including with missing key", :reset => true do
expect(a_double).to receive(:random_call).with(hash_including(:a => 1))
expect {
a_double.random_call(:a => 2)
}.to fail_including "expected: (hash_including(:a=>1))"
end
end
describe "hash_excluding" do
it "matches hash with hash_excluding same hash" do
expect(a_double).to receive(:random_call).with(hash_excluding(:a => 1))
a_double.random_call(:a => 2)
end
it "handles non matching instances nicely", :reset => true do
expect(a_double).to receive(:random_call).with(hash_excluding(:a => 1))
expect {
a_double.random_call(:a => 1)
}.to fail_including "expected: (hash_not_including(:a=>1))"
end
end
describe "array_including" do
it "matches array with array_including same array" do
expect(a_double).to receive(:random_call).with(array_including(1, 2))
a_double.random_call([1, 2])
end
it "fails array_including when args aren't array", :reset => true do
expect(a_double).to receive(:msg).with(array_including(1, 2, 3))
expect {
a_double.msg(1, 2, 3)
}.to fail_including "expected: (array_including(1, 2, 3))"
end
it "fails array_including when arg doesn't contain all elements", :reset => true do
expect(a_double).to receive(:msg).with(array_including(1, 2, 3))
expect {
a_double.msg([1, 2])
}.to fail_including "expected: (array_including(1, 2, 3))"
end
end
context "handling arbitary matchers" do
it "matches any arbitrary object using #===" do
matcher = double
expect(matcher).to receive(:===).with(4).and_return(true)
expect(a_double).to receive(:foo).with(matcher)
a_double.foo(4)
end
it "matches against a Matcher", :reset => true do
expect(a_double).to receive(:msg).with(equal(3))
# This spec is generating warnings on 1.8.7, not sure why so
# this does with_isolated_stderr to kill them. @samphippen 3rd Jan 2013.
expect { with_isolated_stderr { a_double.msg(37) } }.to fail_including "expected: (equal 3)"
end
it "fails when given an arbitrary object that returns false from #===", :reset => true do
matcher = double
expect(matcher).to receive(:===).with(4).at_least(:once).and_return(false)
expect(a_double).to receive(:foo).with(matcher)
expect { a_double.foo(4) }.to fail
end
end
context "handling objects with a wrong definition of `==` that raises errors for other types" do
Color = Struct.new(:r, :g, :b) do
def ==(other)
other.r == r && other.g == g && other.b == b
end
end
before(:context) do
expect { Color.new(0, 0, 0) == Object.new }.to raise_error(NoMethodError)
end
it 'matches against an equal instance of the same type' do
expect(a_double).to receive(:random_call).with(Color.new(0, 0, 0))
a_double.random_call(Color.new(0, 0, 0))
end
it 'fails when matched against an unequal instance of the same class', :reset do
expect(a_double).to receive(:random_call).with(Color.new(0, 0, 0))
expect { a_double.random_call(Color.new(0, 1, 0)) }.to fail
end
it 'can match multiple instances of the type against multiple equal instances of the type' do
expect(a_double).to receive(:random_call).with(
Color.new(0, 0, 0),
Color.new(0, 1, 0)
)
a_double.random_call(
Color.new(0, 0, 0),
Color.new(0, 1, 0)
)
end
end
context "handling non-matcher arguments" do
it "matches string against regexp" do
expect(a_double).to receive(:random_call).with(/bcd/)
a_double.random_call("abcde")
end
it "matches regexp against regexp" do
expect(a_double).to receive(:random_call).with(/bcd/)
a_double.random_call(/bcd/)
end
it "fails if regexp does not match submitted string", :reset => true do
expect(a_double).to receive(:random_call).with(/bcd/)
expect { a_double.random_call("abc") }.to fail
end
it "fails if regexp does not match submitted regexp", :reset => true do
expect(a_double).to receive(:random_call).with(/bcd/)
expect { a_double.random_call(/bcde/) }.to fail
end
it "matches against a hash submitted and received by value" do
expect(a_double).to receive(:random_call).with(:a => "a", :b => "b")
a_double.random_call(:a => "a", :b => "b")
end
it "matches against a hash submitted by reference and received by value" do
opts = {:a => "a", :b => "b"}
expect(a_double).to receive(:random_call).with(opts)
a_double.random_call(:a => "a", :b => "b")
end
it "matches against a hash submitted by value and received by reference" do
opts = {:a => "a", :b => "b"}
expect(a_double).to receive(:random_call).with(:a => "a", :b => "b")
a_double.random_call(opts)
end
it "fails for a hash w/ wrong values", :reset => true do
expect(a_double).to receive(:random_call).with(:a => "b", :c => "d")
expect do
a_double.random_call(:a => "b", :c => "e")
end.to fail_with(/expected: \(\{(:a=>\"b\", :c=>\"d\"|:c=>\"d\", :a=>\"b\")\}\)/)
end
it "fails for a hash w/ wrong keys", :reset => true do
expect(a_double).to receive(:random_call).with(:a => "b", :c => "d")
expect do
a_double.random_call("a" => "b", "c" => "d")
end.to fail_with(/expected: \(\{(:a=>\"b\", :c=>\"d\"|:c=>\"d\", :a=>\"b\")\}\)/)
end
it "matches a class against itself" do
expect(a_double).to receive(:foo).with(Float)
a_double.foo(Float)
end
it "fails a class against an unrelated class", :reset => true do
expect(a_double).to receive(:foo).with(Float)
expect { a_double.foo(Hash) }.to fail
end
it "matches a class against an instance of itself" do
expect(a_double).to receive(:foo).with(Float)
a_double.foo(3.3)
end
it "fails a class against an object of a different type", :reset => true do
expect(a_double).to receive(:foo).with(Float)
expect { a_double.foo(3) }.to fail
end
it "fails with zero arguments", :reset => true do
expect do
expect(a_double).to receive(:msg).with { |arg| expect(arg).to eq :received }
end.to raise_error(ArgumentError, /must have at least one argument/)
end
it "fails with sensible message when args respond to #description", :reset => true do
arg = double(:description => nil, :inspect => "my_thing")
expect(a_double).to receive(:msg).with(3)
expect { a_double.msg arg }.to fail_including "got: (my_thing)"
end
it "fails with sensible message when arg#description is nil", :reset => true do
arg = double(:description => nil, :inspect => "my_thing")
expect(a_double).to receive(:msg).with(arg)
expect { a_double.msg 3 }.to fail_including "expected: (my_thing)"
end
it "fails with sensible message when arg#description is blank", :reset => true do
arg = double(:description => "", :inspect => "my_thing")
expect(a_double).to receive(:msg).with(arg)
expect { a_double.msg 3 }.to fail_including "expected: (my_thing)"
end
end
end
end
end
|
