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require_relative '../../spec_helper'
require 'objspace'
describe "ObjectSpace.dump_all" do
it "dumps Ruby heap to string when passed output: :string" do
stdout = ruby_exe(<<~RUBY, options: "-robjspace")
string = "abc"
dump = ObjectSpace.dump_all(output: :string)
puts dump.class
puts dump.include?('"value":"abc"')
RUBY
stdout.should == "String\ntrue\n"
end
it "dumps Ruby heap to a temporary file when passed output: :file" do
stdout = ruby_exe(<<~RUBY, options: "-robjspace")
string = "abc"
file = ObjectSpace.dump_all(output: :file)
begin
file.flush
file.rewind
content = file.read
puts file.class
puts content.include?('"value":"abc"')
ensure
file.close
File.unlink file.path
end
RUBY
stdout.should == "File\ntrue\n"
end
it "dumps Ruby heap to a temporary file when :output not specified" do
stdout = ruby_exe(<<~RUBY, options: "-robjspace")
string = "abc"
file = ObjectSpace.dump_all
begin
file.flush
file.rewind
content = file.read
puts file.class
puts content.include?('"value":"abc"')
ensure
file.close
File.unlink file.path
end
RUBY
stdout.should == "File\ntrue\n"
end
it "dumps Ruby heap to a temporary file when passed output: :nil" do
stdout = ruby_exe(<<~RUBY, options: "-robjspace")
string = "abc"
file = ObjectSpace.dump_all(output: nil)
begin
file.flush
file.rewind
content = file.read
puts file.class
puts content.include?('"value":"abc"')
ensure
file.close
File.unlink file.path
end
RUBY
stdout.should == "File\ntrue\n"
end
it "dumps Ruby heap to stdout when passed output: :stdout" do
stdout = ruby_exe(<<~RUBY, options: "-robjspace")
string = "abc"
ObjectSpace.dump_all(output: :stdout)
RUBY
stdout.should include('"value":"abc"')
end
it "dumps Ruby heap to provided IO when passed output: IO" do
stdout = ruby_exe(<<~RUBY, options: "-robjspace -rtempfile")
string = "abc"
io = Tempfile.create("object_space_dump_all")
begin
result = ObjectSpace.dump_all(output: io)
io.rewind
content = io.read
puts result.equal?(io)
puts content.include?('"value":"abc"')
ensure
io.close
File.unlink io.path
end
RUBY
stdout.should == "true\ntrue\n"
end
it "raises ArgumentError when passed not supported :output value" do
-> { ObjectSpace.dump_all(output: Object.new) }.should raise_error(ArgumentError, /wrong output option/)
end
end
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