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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
assert_equal true, Condition.new(1, '==', 1).evaluate
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
assert_nil Condition.new(2, '>', {}).evaluate
assert_equal false, Condition.new({}, '==', 2).evaluate
assert_equal true, Condition.new({ 'a' => 1 }, '==', { 'a' => 1 }).evaluate
assert_equal true, Condition.new({ 'a' => 2 }, 'contains', 'a').evaluate
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
condition.or Condition.new(2, '==', 1)
assert_equal false, condition.evaluate
condition.or Condition.new(1, '==', 1)
assert_equal true, condition.evaluate
end
def test_and_condition
condition = Condition.new(1, '==', 1)
assert_equal true, condition.evaluate
condition.and Condition.new(2, '==', 2)
assert_equal true, condition.evaluate
condition.and Condition.new(2, '==', 1)
assert_equal false, condition.evaluate
end
def test_should_allow_custom_proc_operator
Condition.operators['starts_with'] = proc { |cond, left, right| left =~ %r{^#{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
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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