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require_relative '../helper'
module Psych
module Visitors
class TestEmitter < TestCase
def setup
super
@io = StringIO.new
@visitor = Visitors::Emitter.new @io
end
def test_stream
s = Nodes::Stream.new
@visitor.accept s
assert_equal '', @io.string
end
def test_document
s = Nodes::Stream.new
doc = Nodes::Document.new [1,1]
scalar = Nodes::Scalar.new 'hello world'
doc.children << scalar
s.children << doc
@visitor.accept s
assert_match(/1.1/, @io.string)
assert_equal @io.string, s.to_yaml
end
def test_document_implicit_end
s = Nodes::Stream.new
doc = Nodes::Document.new
mapping = Nodes::Mapping.new
mapping.children << Nodes::Scalar.new('key')
mapping.children << Nodes::Scalar.new('value')
doc.children << mapping
s.children << doc
@visitor.accept s
assert_match(/key: value/, @io.string)
assert_equal @io.string, s.to_yaml
assert(/\.\.\./ !~ s.to_yaml)
end
def test_scalar
s = Nodes::Stream.new
doc = Nodes::Document.new
scalar = Nodes::Scalar.new 'hello world'
doc.children << scalar
s.children << doc
@visitor.accept s
assert_match(/hello/, @io.string)
assert_equal @io.string, s.to_yaml
end
def test_scalar_with_tag
s = Nodes::Stream.new
doc = Nodes::Document.new
scalar = Nodes::Scalar.new 'hello world', nil, '!str', false, false, 5
doc.children << scalar
s.children << doc
@visitor.accept s
assert_match(/str/, @io.string)
assert_match(/hello/, @io.string)
assert_equal @io.string, s.to_yaml
end
def test_sequence
s = Nodes::Stream.new
doc = Nodes::Document.new
scalar = Nodes::Scalar.new 'hello world'
seq = Nodes::Sequence.new
seq.children << scalar
doc.children << seq
s.children << doc
@visitor.accept s
assert_match(/- hello/, @io.string)
assert_equal @io.string, s.to_yaml
end
def test_mapping
s = Nodes::Stream.new
doc = Nodes::Document.new
mapping = Nodes::Mapping.new
mapping.children << Nodes::Scalar.new('key')
mapping.children << Nodes::Scalar.new('value')
doc.children << mapping
s.children << doc
@visitor.accept s
assert_match(/key: value/, @io.string)
assert_equal @io.string, s.to_yaml
end
def test_alias
s = Nodes::Stream.new
doc = Nodes::Document.new
mapping = Nodes::Mapping.new
mapping.children << Nodes::Scalar.new('key', 'A')
mapping.children << Nodes::Alias.new('A')
doc.children << mapping
s.children << doc
@visitor.accept s
assert_match(/&A key: \*A/, @io.string)
assert_equal @io.string, s.to_yaml
end
end
end
end
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