def test_write(self):
with StringIO() as stream:
text1 = "a"
text2 = "b"
text3 = "c"
node = SentenceNode()
node.add(TextNode(text1))
node.add(TextNode(text2))
node.add(TextNode(text3))
node.write(stream)
self.assertEqual(stream.getvalue(), text1 + text2 + text3)
def test_write(self):
with StringIO() as stream:
separator = TextNode(",")
scope = Scope()
variable = VariableNode("a", scope)
variable.set_value(["a", "b", "c"])
node = JoinNode(separator, variable)
node.write(stream)
self.assertEqual(stream.getvalue(), "a,b,c")
def test_write(self):
scope = Scope()
variable = VariableNode("a", scope)
thennode = TextNode("true")
elsenode = TextNode("false")
ifnode = IfNode(variable, thennode, elsenode)
# when undefined
with StringIO() as stream:
ifnode.write(stream)
self.assertEqual(stream.getvalue(), "false")
# when true
variable.set_value(True)
with StringIO() as stream:
ifnode.write(stream)
self.assertEqual(stream.getvalue(), "true")
# when false
variable.set_value(False)
with StringIO() as stream:
ifnode.write(stream)
self.assertEqual(stream.getvalue(), "false")
def read_text(preread, stream, parser):
with StringIO() as readstr:
readstr.write(preread)
while True:
character = stream.peek()
if not character:
break
if parser.is_syntax_character(character):
break
readstr.write(character)
stream.get()
return TextNode(readstr.getvalue())
def read_at(preread, stream, parser):
return TextNode("@")
def read_in(preread, stream, parser):
if stream.read(2) != "in":
raise SyntaxError("could not read \"in\".")
return TextNode("")
def read_close_paren(preread, stream, parser):
read_whitespace("", stream, parser)
if stream.read(3) != "-->":
raise SyntaxError("could not read \"-->\".")
return TextNode("")
def test_write(self):
content = "this is text nodes content."
node = TextNode(content)
with StringIO() as stream:
node.write(stream)
self.assertEqual(stream.getvalue(), content) # test