def cli(program, rebuild):
"""Interprets a PROGRAM file as a Tale program."""
if rebuild:
rebuild_grammar()
from tale.core import execute
code = program.read()
execute(code)
def test_wrong_indentation():
# Arrange.
program = """
x =
1
2
x
"""
# Act & Assert.
with pytest.raises(Exception):
execute(program)
def test_invalid_comment():
# Arrange.
program = """
- A.
1
"""
# Act & Assert.
with pytest.raises(Exception):
out = execute(program)
def test_minus_operator():
# Arrange.
program = """
2 - 1
"""
# Act.
out = execute(program)
# Assert.
assert out == 1
def test_one_expression():
# Arrange.
program = """
x
"""
# Act.
out = execute(program)
# Assert.
assert out == 'x'
def test_plus_operator():
# Arrange.
program = """
1 + 2
"""
# Act.
out = execute(program)
# Assert.
assert out == 3
def test_simple_keyword_form_returns_arg():
# Arrange.
program = """
just: (x) = x
just: 1
"""
# Act.
out = execute(program)
# Assert.
assert out == 1
def test_keyword_form_with_prefix_first_arg():
# Arrange.
program = """
(x) just: (y) = x
1 just: 2
"""
# Act.
out = execute(program)
# Assert.
assert out == 1
def test_same_unary_form_called_many_times():
# Arrange.
program = """
(x) just = x
1 just just
"""
# Act.
out = execute(program)
# Assert.
assert out == 1
def test_pattern_matching_of_keyword_form_with_prefix():
# Arrange.
program = """
1 plus: 2 = 3
1 plus: 2
"""
# Act.
out = execute(program)
# Assert.
assert out == 3
def test_not_matched_expression():
# Arrange.
program = """
(x) just = x
1 jusx
"""
# Act.
out = execute(program)
# Assert.
assert out == '1jusx'
def test_two_expressions():
# Arrange.
program = """
x
y
"""
# Act.
out = execute(program)
# Assert.
assert out == 'y'
def test_overriden():
# Arrange.
program = """
py: (x) = x
py: 1
"""
# Act.
out = execute(program)
# Assert.
assert out == 1
def test_random():
# Arrange.
program = """
x = py: "import random; result = random.randint", 1, 1
x
"""
# Act.
out = execute(program)
# Assert.
assert out == 1
def test_invalid_first_arg():
# Arrange.
program = """
x = py: 1
x
"""
# Act.
out = execute(program)
# Assert.
assert out == 'py:1'
def test_one_comment():
# Arrange.
program = """
-- A.
1
"""
# Act.
out = execute(program)
# Assert.
assert out == 1
def test_simple_keyword_form():
# Arrange.
program = """
just: (x) = 1
just: 2
"""
# Act.
out = execute(program)
# Assert.
assert out == 1
def test_keyword_form_has_less_priority_than_binary():
# Arrange.
program = """
just: (x) = x
just: 1 + 2
"""
# Act.
out = execute(program)
# Assert.
assert out == 3
def test_type():
# Arrange.
program = """
x = "a"
x type
"""
# Act.
out = execute(program)
# Assert.
assert out == 'String'
def test_simple_assignment():
# Arrange.
program = """
(x) just = x
1 just
"""
# Act.
out = execute(program)
# Assert.
assert out == 1
def test_keyword_form_with_two_parts_second_arg():
# Arrange.
program = """
add: (x) to: (y) = y
add: 1 to: 2
"""
# Act.
out = execute(program)
# Assert.
assert out == 2
def test_type():
# Arrange.
program = """
x = 1
x type
"""
# Act.
out = execute(program)
# Assert.
assert out == 'Int'
def test_simple_form():
# Arrange.
program = """
-(x) = x
-1
"""
# Act.
out = execute(program)
# Assert.
assert out == 1
def test_multiple_prefix_operators_in_expression():
# Arrange.
program = """
-(x) = x + 1
-(-1)
"""
# Act.
out = execute(program)
# Assert.
assert out == 3
def test_unary():
# Arrange.
program = """
(x), (y) first = x
1, 2 first
"""
# Act.
out = execute(program)
# Assert.
assert out == 1
def test_keyword():
# Arrange.
program = """
second: (x), (y) = y
second: 1, 2
"""
# Act.
out = execute(program)
# Assert.
assert out == 2
def test_compound_binary_expression():
# Arrange.
program = """
(x) + (y) = y
a + b + c + d
"""
# Act.
out = execute(program)
# Assert.
assert out == 'd'
def test_first_argument():
# Arrange.
program = """
(x) + (y) = x
a + b
"""
# Act.
out = execute(program)
# Assert.
assert out == 'a'
def test_second_argument():
# Arrange.
program = """
(x) + (y) = y
a + b
"""
# Act.
out = execute(program)
# Assert.
assert out == 'b'
def test_simple_prefix_operator():
# Arrange.
program = """
-(x) = x
-1
"""
# Act.
out = execute(program)
# Assert.
assert out == 1
