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-rw-r--r--spec/rubyspec/core/array/flatten_spec.rb270
1 files changed, 0 insertions, 270 deletions
diff --git a/spec/rubyspec/core/array/flatten_spec.rb b/spec/rubyspec/core/array/flatten_spec.rb
deleted file mode 100644
index 554b711a55..0000000000
--- a/spec/rubyspec/core/array/flatten_spec.rb
+++ /dev/null
@@ -1,270 +0,0 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-
-describe "Array#flatten" do
- it "returns a one-dimensional flattening recursively" do
- [[[1, [2, 3]],[2, 3, [4, [4, [5, 5]], [1, 2, 3]]], [4]], []].flatten.should == [1, 2, 3, 2, 3, 4, 4, 5, 5, 1, 2, 3, 4]
- end
-
- it "takes an optional argument that determines the level of recursion" do
- [ 1, 2, [3, [4, 5] ] ].flatten(1).should == [1, 2, 3, [4, 5]]
- end
-
- it "returns dup when the level of recursion is 0" do
- a = [ 1, 2, [3, [4, 5] ] ]
- a.flatten(0).should == a
- a.flatten(0).should_not equal(a)
- end
-
- it "ignores negative levels" do
- [ 1, 2, [ 3, 4, [5, 6] ] ].flatten(-1).should == [1, 2, 3, 4, 5, 6]
- [ 1, 2, [ 3, 4, [5, 6] ] ].flatten(-10).should == [1, 2, 3, 4, 5, 6]
- end
-
- it "tries to convert passed Objects to Integers using #to_int" do
- obj = mock("Converted to Integer")
- obj.should_receive(:to_int).and_return(1)
-
- [ 1, 2, [3, [4, 5] ] ].flatten(obj).should == [1, 2, 3, [4, 5]]
- end
-
- it "raises a TypeError when the passed Object can't be converted to an Integer" do
- obj = mock("Not converted")
- lambda { [ 1, 2, [3, [4, 5] ] ].flatten(obj) }.should raise_error(TypeError)
- end
-
- it "does not call flatten on elements" do
- obj = mock('[1,2]')
- obj.should_not_receive(:flatten)
- [obj, obj].flatten.should == [obj, obj]
-
- obj = [5, 4]
- obj.should_not_receive(:flatten)
- [obj, obj].flatten.should == [5, 4, 5, 4]
- end
-
- it "raises an ArgumentError on recursive arrays" do
- x = []
- x << x
- lambda { x.flatten }.should raise_error(ArgumentError)
-
- x = []
- y = []
- x << y
- y << x
- lambda { x.flatten }.should raise_error(ArgumentError)
- end
-
- it "flattens any element which responds to #to_ary, using the return value of said method" do
- x = mock("[3,4]")
- x.should_receive(:to_ary).at_least(:once).and_return([3, 4])
- [1, 2, x, 5].flatten.should == [1, 2, 3, 4, 5]
-
- y = mock("MyArray[]")
- y.should_receive(:to_ary).at_least(:once).and_return(ArraySpecs::MyArray[])
- [y].flatten.should == []
-
- z = mock("[2,x,y,5]")
- z.should_receive(:to_ary).and_return([2, x, y, 5])
- [1, z, 6].flatten.should == [1, 2, 3, 4, 5, 6]
- end
-
- ruby_version_is "2.3" do
- it "does not call #to_ary on elements beyond the given level" do
- obj = mock("1")
- obj.should_not_receive(:to_ary)
- [[obj]].flatten(1)
- end
- end
-
- it "returns subclass instance for Array subclasses" do
- ArraySpecs::MyArray[].flatten.should be_an_instance_of(ArraySpecs::MyArray)
- ArraySpecs::MyArray[1, 2, 3].flatten.should be_an_instance_of(ArraySpecs::MyArray)
- ArraySpecs::MyArray[1, [2], 3].flatten.should be_an_instance_of(ArraySpecs::MyArray)
- ArraySpecs::MyArray[1, [2, 3], 4].flatten.should == ArraySpecs::MyArray[1, 2, 3, 4]
- [ArraySpecs::MyArray[1, 2, 3]].flatten.should be_an_instance_of(Array)
- end
-
- it "is not destructive" do
- ary = [1, [2, 3]]
- ary.flatten
- ary.should == [1, [2, 3]]
- end
-
- describe "with a non-Array object in the Array" do
- before :each do
- @obj = mock("Array#flatten")
- ScratchPad.record []
- end
-
- it "does not call #to_ary if the method is not defined" do
- [@obj].flatten.should == [@obj]
- end
-
- it "does not raise an exception if #to_ary returns nil" do
- @obj.should_receive(:to_ary).and_return(nil)
- [@obj].flatten.should == [@obj]
- end
-
- it "raises a TypeError if #to_ary does not return an Array" do
- @obj.should_receive(:to_ary).and_return(1)
- lambda { [@obj].flatten }.should raise_error(TypeError)
- end
-
- it "does not call #to_ary if not defined when #respond_to_missing? returns false" do
- def @obj.respond_to_missing?(*args) ScratchPad << args; false end
-
- [@obj].flatten.should == [@obj]
- ScratchPad.recorded.should == [[:to_ary, false]]
- end
-
- it "calls #to_ary if not defined when #respond_to_missing? returns true" do
- def @obj.respond_to_missing?(*args) ScratchPad << args; true end
-
- lambda { [@obj].flatten }.should raise_error(NoMethodError)
- ScratchPad.recorded.should == [[:to_ary, false]]
- end
-
- it "calls #method_missing if defined" do
- @obj.should_receive(:method_missing).with(:to_ary).and_return([1, 2, 3])
- [@obj].flatten.should == [1, 2, 3]
- end
- end
-
- it "returns a tainted array if self is tainted" do
- [].taint.flatten.tainted?.should be_true
- end
-
- it "returns an untrusted array if self is untrusted" do
- [].untrust.flatten.untrusted?.should be_true
- end
-
- it "performs respond_to? and method_missing-aware checks when coercing elements to array" do
- bo = BasicObject.new
- [bo].flatten.should == [bo]
-
- def bo.method_missing(name, *)
- [1,2]
- end
-
- [bo].flatten.should == [1,2]
-
- def bo.respond_to?(name, *)
- false
- end
-
- [bo].flatten.should == [bo]
-
- def bo.respond_to?(name, *)
- true
- end
-
- [bo].flatten.should == [1,2]
- end
-end
-
-describe "Array#flatten!" do
- it "modifies array to produce a one-dimensional flattening recursively" do
- a = [[[1, [2, 3]],[2, 3, [4, [4, [5, 5]], [1, 2, 3]]], [4]], []]
- a.flatten!
- a.should == [1, 2, 3, 2, 3, 4, 4, 5, 5, 1, 2, 3, 4]
- end
-
- it "returns self if made some modifications" do
- a = [[[1, [2, 3]],[2, 3, [4, [4, [5, 5]], [1, 2, 3]]], [4]], []]
- a.flatten!.should equal(a)
- end
-
- it "returns nil if no modifications took place" do
- a = [1, 2, 3]
- a.flatten!.should == nil
- a = [1, [2, 3]]
- a.flatten!.should_not == nil
- end
-
- it "should not check modification by size" do
- a = [1, 2, [3]]
- a.flatten!.should_not == nil
- a.should == [1, 2, 3]
- end
-
- it "takes an optional argument that determines the level of recursion" do
- [ 1, 2, [3, [4, 5] ] ].flatten!(1).should == [1, 2, 3, [4, 5]]
- end
-
- # redmine #1440
- it "returns nil when the level of recursion is 0" do
- a = [ 1, 2, [3, [4, 5] ] ]
- a.flatten!(0).should == nil
- end
-
- it "treats negative levels as no arguments" do
- [ 1, 2, [ 3, 4, [5, 6] ] ].flatten!(-1).should == [1, 2, 3, 4, 5, 6]
- [ 1, 2, [ 3, 4, [5, 6] ] ].flatten!(-10).should == [1, 2, 3, 4, 5, 6]
- end
-
- it "tries to convert passed Objects to Integers using #to_int" do
- obj = mock("Converted to Integer")
- obj.should_receive(:to_int).and_return(1)
-
- [ 1, 2, [3, [4, 5] ] ].flatten!(obj).should == [1, 2, 3, [4, 5]]
- end
-
- it "raises a TypeError when the passed Object can't be converted to an Integer" do
- obj = mock("Not converted")
- lambda { [ 1, 2, [3, [4, 5] ] ].flatten!(obj) }.should raise_error(TypeError)
- end
-
- it "does not call flatten! on elements" do
- obj = mock('[1,2]')
- obj.should_not_receive(:flatten!)
- [obj, obj].flatten!.should == nil
-
- obj = [5, 4]
- obj.should_not_receive(:flatten!)
- [obj, obj].flatten!.should == [5, 4, 5, 4]
- end
-
- it "raises an ArgumentError on recursive arrays" do
- x = []
- x << x
- lambda { x.flatten! }.should raise_error(ArgumentError)
-
- x = []
- y = []
- x << y
- y << x
- lambda { x.flatten! }.should raise_error(ArgumentError)
- end
-
- it "flattens any elements which responds to #to_ary, using the return value of said method" do
- x = mock("[3,4]")
- x.should_receive(:to_ary).at_least(:once).and_return([3, 4])
- [1, 2, x, 5].flatten!.should == [1, 2, 3, 4, 5]
-
- y = mock("MyArray[]")
- y.should_receive(:to_ary).at_least(:once).and_return(ArraySpecs::MyArray[])
- [y].flatten!.should == []
-
- z = mock("[2,x,y,5]")
- z.should_receive(:to_ary).and_return([2, x, y, 5])
- [1, z, 6].flatten!.should == [1, 2, 3, 4, 5, 6]
-
- ary = [ArraySpecs::MyArray[1, 2, 3]]
- ary.flatten!
- ary.should be_an_instance_of(Array)
- ary.should == [1, 2, 3]
- end
-
- it "raises a RuntimeError on frozen arrays when the array is modified" do
- nested_ary = [1, 2, []]
- nested_ary.freeze
- lambda { nested_ary.flatten! }.should raise_error(RuntimeError)
- end
-
- # see [ruby-core:23663]
- it "raises a RuntimeError on frozen arrays when the array would not be modified" do
- lambda { ArraySpecs.frozen_array.flatten! }.should raise_error(RuntimeError)
- lambda { ArraySpecs.empty_frozen_array.flatten! }.should raise_error(RuntimeError)
- end
-end
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