From 1d15d5f08032acf1b7bceacbb450d617ff6e0931 Mon Sep 17 00:00:00 2001 From: eregon Date: Wed, 20 Sep 2017 20:18:52 +0000 Subject: Move spec/rubyspec to spec/ruby for consistency * Other ruby implementations use the spec/ruby directory. [Misc #13792] [ruby-core:82287] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- spec/ruby/core/hash/keep_if_spec.rb | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 spec/ruby/core/hash/keep_if_spec.rb (limited to 'spec/ruby/core/hash/keep_if_spec.rb') diff --git a/spec/ruby/core/hash/keep_if_spec.rb b/spec/ruby/core/hash/keep_if_spec.rb new file mode 100644 index 0000000000..6b3a1925d3 --- /dev/null +++ b/spec/ruby/core/hash/keep_if_spec.rb @@ -0,0 +1,37 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) +require File.expand_path('../shared/iteration', __FILE__) +require File.expand_path('../../enumerable/shared/enumeratorized', __FILE__) + +describe "Hash#keep_if" do + it "yields two arguments: key and value" do + all_args = [] + { 1 => 2, 3 => 4 }.keep_if { |*args| all_args << args } + all_args.should == [[1, 2], [3, 4]] + end + + it "keeps every entry for which block is true and returns self" do + h = { a: 1, b: 2, c: 3, d: 4 } + h.keep_if { |k,v| v % 2 == 0 }.should equal(h) + h.should == { b: 2, d: 4 } + end + + it "removes all entries if the block is false" do + h = { a: 1, b: 2, c: 3 } + h.keep_if { |k,v| false }.should equal(h) + h.should == {} + end + + it "returns self even if unmodified" do + h = { 1 => 2, 3 => 4 } + h.keep_if { true }.should equal(h) + end + + it "raises a RuntimeError if called on a frozen instance" do + lambda { HashSpecs.frozen_hash.keep_if { true } }.should raise_error(RuntimeError) + lambda { HashSpecs.empty_frozen_hash.keep_if { false } }.should raise_error(RuntimeError) + end + + it_behaves_like(:hash_iteration_no_block, :keep_if) + it_behaves_like(:enumeratorized_with_origin_size, :keep_if, { 1 => 2, 3 => 4, 5 => 6 }) +end -- cgit v1.2.3