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# coding=utf8
from __future__ import unicode_literals
from nose.tools import istest, assert_equal, assert_raises
import jq
@istest
def output_of_dot_operator_is_input():
assert_equal(
"42",
jq.compile(".").input("42").first()
)
@istest
def can_add_one_to_each_element_of_an_array():
assert_equal(
[2, 3, 4],
jq.compile("[.[]+1]").input([1, 2, 3]).first()
)
@istest
def can_use_regexes():
assert_equal(
True,
jq.compile('test(".*")').input("42").first()
)
assert_equal(
True,
jq.compile('test("^[0-9]+$")').input("42").first()
)
assert_equal(
False,
jq.compile('test("^[0-9]+$")').input("42a").first()
)
@istest
def when_text_argument_is_used_then_input_is_treated_as_json_text():
assert_equal(
42,
jq.compile(".").input(text="42").first()
)
@istest
def when_text_method_is_used_on_result_then_output_is_serialised_to_json_string():
assert_equal(
'"42"',
jq.compile(".").input("42").text()
)
@istest
def elements_in_text_output_are_separated_by_newlines():
assert_equal(
"1\n2\n3",
jq.compile(".[]").input([1, 2, 3]).text()
)
@istest
def when_first_method_is_used_on_result_then_first_element_of_result_is_returned():
assert_equal(
2,
jq.compile(".[]+1").input([1, 2, 3]).first()
)
@istest
def when_all_method_is_used_on_result_then_all_elements_are_returned_in_list():
assert_equal(
[2, 3, 4],
jq.compile(".[]+1").input([1, 2, 3]).all()
)
@istest
def can_treat_execute_result_as_iterable():
iterator = iter(jq.compile(".[]+1").input([1, 2, 3]))
assert_equal(2, next(iterator))
assert_equal(3, next(iterator))
assert_equal(4, next(iterator))
assert_equal("end", next(iterator, "end"))
@istest
def can_execute_same_program_again_before_consuming_output_of_first_execution():
program = jq.compile(".[]+1")
first = iter(program.input([1, 2, 3]))
assert_equal(2, next(first))
second = iter(program.input([11, 12, 13]))
assert_equal(12, next(second))
assert_equal(3, next(first))
assert_equal(4, next(first))
assert_equal(13, next(second))
assert_equal(14, next(second))
@istest
def iterators_from_same_program_and_input_are_independent():
program_with_input = jq.compile(".[]+1").input([1, 2, 3])
first = iter(program_with_input)
assert_equal(2, next(first))
second = iter(program_with_input)
assert_equal(2, next(second))
assert_equal(3, next(first))
assert_equal(4, next(first))
assert_equal(3, next(second))
assert_equal(4, next(second))
@istest
def multiple_inputs_in_text_input_are_separated_by_newlines():
assert_equal(
[2, 3, 4],
jq.compile(".+1").input(text="1\n2\n3").all()
)
@istest
def value_error_is_raised_if_program_is_invalid():
try:
jq.compile("!")
assert False, "Expected error"
except ValueError as error:
expected_error_str = "jq: error: syntax error, unexpected INVALID_CHARACTER, expecting $end (Unix shell quoting issues?) at <top-level>, line 1:\n!\njq: 1 compile error"
assert_equal(str(error), expected_error_str)
@istest
def value_error_is_raised_if_input_cannot_be_processed_by_program():
program = jq.compile(".x")
try:
program.input(1).all()
assert False, "Expected error"
except ValueError as error:
expected_error_str = "Cannot index number with string \"x\""
assert_equal(str(error), expected_error_str)
@istest
def errors_do_not_leak_between_transformations():
program = jq.compile(".x")
try:
program.input(1).all()
assert False, "Expected error"
except ValueError as error:
pass
assert_equal(1, program.input({"x": 1}).first())
@istest
def value_error_is_raised_if_input_is_not_valid_json():
program = jq.compile(".x")
try:
program.input(text="!!").first()
assert False, "Expected error"
except ValueError as error:
expected_error_str = "parse error: Invalid numeric literal at EOF at line 1, column 2"
assert_equal(str(error), expected_error_str)
@istest
def unicode_strings_can_be_used_as_input():
assert_equal(
"‽",
jq.compile(".").input(text='"‽"').first()
)
@istest
def unicode_strings_can_be_used_as_programs():
assert_equal(
"Dragon‽",
jq.compile('.+"‽"').input(text='"Dragon"').first()
)
@istest
def repr_of_compile_result_is_compilation_string():
program = jq.compile(".")
repr_string = repr(program)
assert_equal("jq.compile({!r})".format("."), repr_string)
@istest
def program_string_can_be_retrieved_from_program():
program = jq.compile(".")
assert_equal(".", program.program_string)
@istest
class ConvenienceFunctions(object):
@istest
def first_function_with_json_value_input_returns_first_output_element(self):
output = jq.first(".[] + 1", [1, 2, 3])
assert_equal(2, output)
@istest
def first_function_with_json_text_input_returns_first_output_element(self):
output = jq.first(".[] + 1", text="[1, 2, 3]")
assert_equal(2, output)
@istest
def text_function_with_json_value_input_returns_all_output_elements_as_string(self):
output = jq.text(".[] + 1", [1, 2, 3])
assert_equal("2\n3\n4", output)
@istest
def text_function_with_json_text_input_returns_all_output_elements_as_string(self):
output = jq.text(".[] + 1", text="[1, 2, 3]")
assert_equal("2\n3\n4", output)
@istest
def all_function_with_json_value_input_returns_all_output_elements_in_list(self):
output = jq.all(".[] + 1", [1, 2, 3])
assert_equal([2, 3, 4], output)
@istest
def all_function_with_json_text_input_returns_all_output_element_in_list(self):
output = jq.all(".[] + 1", text="[1, 2, 3]")
assert_equal([2, 3, 4], output)
@istest
def iter_function_with_json_value_input_returns_all_output_elements_in_iterator(self):
iterator = jq.iter(".[] + 1", [1, 2, 3])
assert_equal(2, next(iterator))
assert_equal(3, next(iterator))
assert_equal(4, next(iterator))
assert_equal("end", next(iterator, "end"))
@istest
def iter_function_with_json_text_input_returns_all_output_element_in_iterator(self):
iterator = jq.iter(".[] + 1", text="[1, 2, 3]")
assert_equal(2, next(iterator))
assert_equal(3, next(iterator))
assert_equal(4, next(iterator))
assert_equal("end", next(iterator, "end"))
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