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Diffstat (limited to 'spec/ruby/core/enumerable/all_spec.rb')
| -rw-r--r-- | spec/ruby/core/enumerable/all_spec.rb | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/spec/ruby/core/enumerable/all_spec.rb b/spec/ruby/core/enumerable/all_spec.rb new file mode 100644 index 0000000000..cbdd63f86a --- /dev/null +++ b/spec/ruby/core/enumerable/all_spec.rb @@ -0,0 +1,187 @@ +require_relative '../../spec_helper' +require_relative 'fixtures/classes' + +describe "Enumerable#all?" do + before :each do + @enum = EnumerableSpecs::Numerous.new + @empty = EnumerableSpecs::Empty.new() + @enum1 = EnumerableSpecs::Numerous.new(0, 1, 2, -1) + @enum2 = EnumerableSpecs::Numerous.new(nil, false, true) + end + + it "always returns true on empty enumeration" do + @empty.should.all? + @empty.all? { nil }.should == true + + [].should.all? + [].all? { false }.should == true + + {}.should.all? + {}.all? { nil }.should == true + end + + it "raises an ArgumentError when more than 1 argument is provided" do + -> { @enum.all?(1, 2, 3) }.should.raise(ArgumentError) + -> { [].all?(1, 2, 3) }.should.raise(ArgumentError) + -> { {}.all?(1, 2, 3) }.should.raise(ArgumentError) + end + + it "does not hide exceptions out of #each" do + -> { + EnumerableSpecs::ThrowingEach.new.all? + }.should.raise(RuntimeError) + + -> { + EnumerableSpecs::ThrowingEach.new.all? { false } + }.should.raise(RuntimeError) + end + + describe "with no block" do + it "returns true if no elements are false or nil" do + @enum.should.all? + @enum1.should.all? + @enum2.should_not.all? + + EnumerableSpecs::Numerous.new('a','b','c').should.all? + EnumerableSpecs::Numerous.new(0, "x", true).should.all? + end + + it "returns false if there are false or nil elements" do + EnumerableSpecs::Numerous.new(false).should_not.all? + EnumerableSpecs::Numerous.new(false, false).should_not.all? + + EnumerableSpecs::Numerous.new(nil).should_not.all? + EnumerableSpecs::Numerous.new(nil, nil).should_not.all? + + EnumerableSpecs::Numerous.new(1, nil, 2).should_not.all? + EnumerableSpecs::Numerous.new(0, "x", false, true).should_not.all? + @enum2.should_not.all? + end + + it "gathers whole arrays as elements when each yields multiple" do + multi = EnumerableSpecs::YieldsMultiWithFalse.new + multi.all?.should == true + end + end + + describe "with block" do + it "returns true if the block never returns false or nil" do + @enum.all? { true }.should == true + @enum1.all?{ |o| o < 5 }.should == true + @enum1.all?{ |o| 5 }.should == true + end + + it "returns false if the block ever returns false or nil" do + @enum.all? { false }.should == false + @enum.all? { nil }.should == false + @enum1.all?{ |o| o > 2 }.should == false + + EnumerableSpecs::Numerous.new.all? { |i| i > 5 }.should == false + EnumerableSpecs::Numerous.new.all? { |i| i == 3 ? nil : true }.should == false + end + + it "stops iterating once the return value is determined" do + yielded = [] + EnumerableSpecs::Numerous.new(:one, :two, :three).all? do |e| + yielded << e + false + end.should == false + yielded.should == [:one] + + yielded = [] + EnumerableSpecs::Numerous.new(true, true, false, true).all? do |e| + yielded << e + e + end.should == false + yielded.should == [true, true, false] + + yielded = [] + EnumerableSpecs::Numerous.new(1, 2, 3, 4, 5).all? do |e| + yielded << e + e + end.should == true + yielded.should == [1, 2, 3, 4, 5] + end + + it "does not hide exceptions out of the block" do + -> { + @enum.all? { raise "from block" } + }.should.raise(RuntimeError) + end + + it "gathers initial args as elements when each yields multiple" do + multi = EnumerableSpecs::YieldsMulti.new + yielded = [] + multi.all? { |e| yielded << e }.should == true + yielded.should == [1, 3, 6] + end + + it "yields multiple arguments when each yields multiple" do + multi = EnumerableSpecs::YieldsMulti.new + yielded = [] + multi.all? { |*args| yielded << args }.should == true + yielded.should == [[1, 2], [3, 4, 5], [6, 7, 8, 9]] + end + end + + describe 'when given a pattern argument' do + it "calls `===` on the pattern the return value" do + pattern = EnumerableSpecs::Pattern.new { |x| x >= 0 } + @enum1.all?(pattern).should == false + pattern.yielded.should == [[0], [1], [2], [-1]] + end + + it "always returns true on empty enumeration" do + @empty.all?(Integer).should == true + [].all?(Integer).should == true + {}.all?(NilClass).should == true + end + + it "does not hide exceptions out of #each" do + -> { + EnumerableSpecs::ThrowingEach.new.all?(Integer) + }.should.raise(RuntimeError) + end + + it "returns true if the pattern never returns false or nil" do + pattern = EnumerableSpecs::Pattern.new { |x| 42 } + @enum.all?(pattern).should == true + + [1, 42, 3].all?(pattern).should == true + + pattern = EnumerableSpecs::Pattern.new { |x| Array === x } + {a: 1, b: 2}.all?(pattern).should == true + end + + it "returns false if the pattern ever returns false or nil" do + pattern = EnumerableSpecs::Pattern.new { |x| x >= 0 } + @enum1.all?(pattern).should == false + pattern.yielded.should == [[0], [1], [2], [-1]] + + [1, 2, 3, -1].all?(pattern).should == false + + pattern = EnumerableSpecs::Pattern.new { |x| x[1] >= 0 } + {a: 1, b: -1}.all?(pattern).should == false + end + + it "does not hide exceptions out of pattern#===" do + pattern = EnumerableSpecs::Pattern.new { raise "from pattern" } + -> { + @enum.all?(pattern) + }.should.raise(RuntimeError) + end + + it "calls the pattern with gathered array when yielded with multiple arguments" do + multi = EnumerableSpecs::YieldsMulti.new + pattern = EnumerableSpecs::Pattern.new { true } + multi.all?(pattern).should == true + pattern.yielded.should == [[[1, 2]], [[3, 4, 5]], [[6, 7, 8, 9]]] + end + + it "ignores the block if there is an argument" do + -> { + EnumerableSpecs::Numerous.new(1, 2, 3, 4, 5).all?(String) { true }.should == false + }.should complain(/given block not used/) + end + end +end |