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# frozen_string_literal: true
require 'test_helper'
class ConditionUnitTest < Minitest::Test
include Liquid
def setup
@context = Liquid::Context.new
end
def test_basic_condition
assert_equal(false, Condition.new(1, '==', 2).evaluate(Context.new))
assert_equal(true, Condition.new(1, '==', 1).evaluate(Context.new))
end
def test_default_operators_evalute_true
assert_evaluates_true(1, '==', 1)
assert_evaluates_true(1, '!=', 2)
assert_evaluates_true(1, '<>', 2)
assert_evaluates_true(1, '<', 2)
assert_evaluates_true(2, '>', 1)
assert_evaluates_true(1, '>=', 1)
assert_evaluates_true(2, '>=', 1)
assert_evaluates_true(1, '<=', 2)
assert_evaluates_true(1, '<=', 1)
# negative numbers
assert_evaluates_true(1, '>', -1)
assert_evaluates_true(-1, '<', 1)
assert_evaluates_true(1.0, '>', -1.0)
assert_evaluates_true(-1.0, '<', 1.0)
end
def test_default_operators_evalute_false
assert_evaluates_false(1, '==', 2)
assert_evaluates_false(1, '!=', 1)
assert_evaluates_false(1, '<>', 1)
assert_evaluates_false(1, '<', 0)
assert_evaluates_false(2, '>', 4)
assert_evaluates_false(1, '>=', 3)
assert_evaluates_false(2, '>=', 4)
assert_evaluates_false(1, '<=', 0)
assert_evaluates_false(1, '<=', 0)
end
def test_contains_works_on_strings
assert_evaluates_true('bob', 'contains', 'o')
assert_evaluates_true('bob', 'contains', 'b')
assert_evaluates_true('bob', 'contains', 'bo')
assert_evaluates_true('bob', 'contains', 'ob')
assert_evaluates_true('bob', 'contains', 'bob')
assert_evaluates_false('bob', 'contains', 'bob2')
assert_evaluates_false('bob', 'contains', 'a')
assert_evaluates_false('bob', 'contains', '---')
end
def test_invalid_comparation_operator
assert_evaluates_argument_error(1, '~~', 0)
end
def test_comparation_of_int_and_str
assert_evaluates_argument_error('1', '>', 0)
assert_evaluates_argument_error('1', '<', 0)
assert_evaluates_argument_error('1', '>=', 0)
assert_evaluates_argument_error('1', '<=', 0)
end
def test_hash_compare_backwards_compatibility
assert_nil(Condition.new({}, '>', 2).evaluate(Context.new))
assert_nil(Condition.new(2, '>', {}).evaluate(Context.new))
assert_equal(false, Condition.new({}, '==', 2).evaluate(Context.new))
assert_equal(true, Condition.new({ 'a' => 1 }, '==', 'a' => 1).evaluate(Context.new))
assert_equal(true, Condition.new({ 'a' => 2 }, 'contains', 'a').evaluate(Context.new))
end
def test_contains_works_on_arrays
@context = Liquid::Context.new
@context['array'] = [1, 2, 3, 4, 5]
array_expr = VariableLookup.new("array")
assert_evaluates_false(array_expr, 'contains', 0)
assert_evaluates_true(array_expr, 'contains', 1)
assert_evaluates_true(array_expr, 'contains', 2)
assert_evaluates_true(array_expr, 'contains', 3)
assert_evaluates_true(array_expr, 'contains', 4)
assert_evaluates_true(array_expr, 'contains', 5)
assert_evaluates_false(array_expr, 'contains', 6)
assert_evaluates_false(array_expr, 'contains', "1")
end
def test_contains_returns_false_for_nil_operands
@context = Liquid::Context.new
assert_evaluates_false(VariableLookup.new('not_assigned'), 'contains', '0')
assert_evaluates_false(0, 'contains', VariableLookup.new('not_assigned'))
end
def test_contains_return_false_on_wrong_data_type
assert_evaluates_false(1, 'contains', 0)
end
def test_contains_with_string_left_operand_coerces_right_operand_to_string
assert_evaluates_true(' 1 ', 'contains', 1)
assert_evaluates_false(' 1 ', 'contains', 2)
end
def test_or_condition
condition = Condition.new(1, '==', 2)
assert_equal(false, condition.evaluate(Context.new))
condition.or(Condition.new(2, '==', 1))
assert_equal(false, condition.evaluate(Context.new))
condition.or(Condition.new(1, '==', 1))
assert_equal(true, condition.evaluate(Context.new))
end
def test_and_condition
condition = Condition.new(1, '==', 1)
assert_equal(true, condition.evaluate(Context.new))
condition.and(Condition.new(2, '==', 2))
assert_equal(true, condition.evaluate(Context.new))
condition.and(Condition.new(2, '==', 1))
assert_equal(false, condition.evaluate(Context.new))
end
def test_should_allow_custom_proc_operator
Condition.operators['starts_with'] = proc { |_cond, left, right| left =~ /^#{right}/ }
assert_evaluates_true('bob', 'starts_with', 'b')
assert_evaluates_false('bob', 'starts_with', 'o')
ensure
Condition.operators.delete('starts_with')
end
def test_left_or_right_may_contain_operators
@context = Liquid::Context.new
@context['one'] = @context['another'] = "gnomeslab-and-or-liquid"
assert_evaluates_true(VariableLookup.new("one"), '==', VariableLookup.new("another"))
end
def test_default_context_is_deprecated
if Gem::Version.new(Liquid::VERSION) >= Gem::Version.new('6.0.0')
flunk("Condition#evaluate without a context argument is to be removed")
end
_out, err = capture_io do
assert_equal(true, Condition.new(1, '==', 1).evaluate)
end
expected = "DEPRECATION WARNING: Condition#evaluate without a context argument is deprecated" \
" and will be removed from Liquid 6.0.0."
assert_includes(err.lines.map(&:strip), expected)
end
private
def assert_evaluates_true(left, op, right)
assert(Condition.new(left, op, right).evaluate(@context),
"Evaluated false: #{left} #{op} #{right}")
end
def assert_evaluates_false(left, op, right)
assert(!Condition.new(left, op, right).evaluate(@context),
"Evaluated true: #{left} #{op} #{right}")
end
def assert_evaluates_argument_error(left, op, right)
assert_raises(Liquid::ArgumentError) do
Condition.new(left, op, right).evaluate(@context)
end
end
end # ConditionTest
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