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require_relative '../../spec_helper'
require 'objspace'
describe "ObjectSpace.dump" do
it "dumps the content of object as JSON" do
require 'json'
string = ObjectSpace.dump("abc")
dump = JSON.parse(string)
dump['type'].should == "STRING"
dump['value'].should == "abc"
end
it "dumps to string when passed output: :string" do
string = ObjectSpace.dump("abc", output: :string)
string.should be_kind_of(String)
string.should include('"value":"abc"')
end
it "dumps to string when :output not specified" do
string = ObjectSpace.dump("abc")
string.should be_kind_of(String)
string.should include('"value":"abc"')
end
it "dumps to a temporary file when passed output: :file" do
file = ObjectSpace.dump("abc", output: :file)
file.should be_kind_of(File)
file.rewind
content = file.read
content.should include('"value":"abc"')
ensure
file.close
File.unlink file.path
end
it "dumps to a temporary file when passed output: :nil" do
file = ObjectSpace.dump("abc", output: nil)
file.should be_kind_of(File)
file.rewind
file.read.should include('"value":"abc"')
ensure
file.close
File.unlink file.path
end
it "dumps to stdout when passed output: :stdout" do
stdout = ruby_exe('ObjectSpace.dump("abc", output: :stdout)', options: "-robjspace").chomp
stdout.should include('"value":"abc"')
end
it "dumps to provided IO when passed output: IO" do
filename = tmp("io_read.txt")
io = File.open(filename, "w+")
result = ObjectSpace.dump("abc", output: io)
result.should.equal? io
io.rewind
io.read.should include('"value":"abc"')
ensure
io.close
rm_r filename
end
it "raises ArgumentError when passed not supported :output value" do
-> { ObjectSpace.dump("abc", output: Object.new) }.should raise_error(ArgumentError, /wrong output option/)
end
end
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