Sha256: afadf37e6895d391d9c132b5cef1578c93c0d42c35d8b78792cb7e7c73417f8e
Contents?: true
Size: 1.35 KB
Versions: 23
Compression:
Stored size: 1.35 KB
Contents
describe "Array#last" do
it "returns the last element" do
[1, 1, 1, 1, 2].last.should == 2
end
it "returns nil if self is empty" do
[].last.should == nil
end
it "returns the last count elements if given a count" do
[1, 2, 3, 4, 5, 9].last(3).should == [4, 5, 9]
end
it "returns an empty array when passed a count on an empty array" do
[].last(0).should == []
[].last(1).should == []
end
it "returns an empty array when count == 0" do
[1, 2, 3, 4, 5].last(0).should == []
end
it "returns an array containing the last element when passed count == 1" do
[1, 2, 3, 4, 5].last(1).should == [5]
end
it "raises an ArgumentError when count is negative" do
lambda { [1, 2].last(-1) }.should raise_error(ArgumentError)
end
it "returns the entire array when count > length" do
[1, 2, 3, 4, 5, 9].last(10).should == [1, 2, 3, 4, 5, 9]
end
it "returns an array which is independent to the original when passed count" do
ary = [1, 2, 3, 4, 5]
ary.last(0).replace([1,2])
ary.should == [1, 2, 3, 4, 5]
ary.last(1).replace([1,2])
ary.should == [1, 2, 3, 4, 5]
ary.last(6).replace([1,2])
ary.should == [1, 2, 3, 4, 5]
end
it "is not destructive" do
a = [1, 2, 3]
a.last
a.should == [1, 2, 3]
a.last(2)
a.should == [1, 2, 3]
a.last(3)
a.should == [1, 2, 3]
end
end
Version data entries
23 entries across 23 versions & 1 rubygems