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|
assert('__FILE__') do
file = __FILE__
assert_true 'test/t/syntax.rb' == file || 'test\t\syntax.rb' == file
end
assert('__LINE__') do
assert_equal 7, __LINE__
end
assert('super', '11.3.4') do
assert_raise NoMethodError do
super
end
class SuperFoo
def foo
true
end
def bar(*a)
a
end
end
class SuperBar < SuperFoo
def foo
super
end
def bar(*a)
super(*a)
end
end
bar = SuperBar.new
assert_true bar.foo
assert_equal [1,2,3], bar.bar(1,2,3)
end
assert('yield', '11.3.5') do
assert_raise LocalJumpError do
yield
end
end
assert('Abbreviated variable assignment', '11.4.2.3.2') do
a ||= 1
b &&= 1
c = 1
c += 2
assert_equal 1, a
assert_nil b
assert_equal 3, c
end
assert('case expression', '11.5.2.2.4') do
# case-expression-with-expression, one when-clause
x = 0
case "a"
when "a"
x = 1
end
assert_equal 1, x
# case-expression-with-expression, multiple when-clauses
x = 0
case "b"
when "a"
x = 1
when "b"
x = 2
end
assert_equal 2, x
# no matching when-clause
x = 0
case "c"
when "a"
x = 1
when "b"
x = 2
end
assert_equal 0, x
# case-expression-with-expression, one when-clause and one else-clause
a = 0
case "c"
when "a"
x = 1
else
x = 3
end
assert_equal 3, x
# case-expression-without-expression, one when-clause
x = 0
case
when true
x = 1
end
assert_equal 1, x
# case-expression-without-expression, multiple when-clauses
x = 0
case
when 0 == 1
x = 1
when 1 == 1
x = 2
end
assert_equal 2, x
# case-expression-without-expression, one when-clause and one else-clause
x = 0
case
when 0 == 1
x = 1
else
x = 3
end
assert_equal 3, x
# multiple when-arguments
x = 0
case 4
when 1, 3, 5
x = 1
when 2, 4, 6
x = 2
end
assert_equal 2, x
# when-argument with splatting argument
x = :integer
odds = [ 1, 3, 5, 7, 9 ]
evens = [ 2, 4, 6, 8 ]
case 5
when *odds
x = :odd
when *evens
x = :even
end
assert_equal :odd, x
true
end
assert('Nested const reference') do
module Syntax4Const
CONST1 = "hello world"
class Const2
def const1
CONST1
end
end
end
assert_equal "hello world", Syntax4Const::CONST1
assert_equal "hello world", Syntax4Const::Const2.new.const1
end
assert('Abbreviated variable assignment as returns') do
module Syntax4AbbrVarAsgnAsReturns
class A
def b
@c ||= 1
end
end
end
assert_equal 1, Syntax4AbbrVarAsgnAsReturns::A.new.b
end
assert('Splat and mass assignment') do
*a = *[1,2,3]
b, *c = *[7,8,9]
assert_equal [1,2,3], a
assert_equal 7, b
assert_equal [8,9], c
end
assert('Return values of case statements') do
a = [] << case 1
when 3 then 2
when 2 then 2
when 1 then 2
end
b = [] << case 1
when 2 then 2
else
end
def fb
n = 0
Proc.new do
n += 1
case
when n % 15 == 0
else n
end
end
end
assert_equal [2], a
assert_equal [nil], b
assert_equal 1, fb.call
end
assert('splat in case statement') do
values = [3,5,1,7,8]
testa = [1,2,7]
testb = [5,6]
resulta = []
resultb = []
resultc = []
values.each do |value|
case value
when *testa
resulta << value
when *testb
resultb << value
else
resultc << value
end
end
assert_equal [1,7], resulta
assert_equal [5], resultb
assert_equal [3,8], resultc
end
assert('External command execution.') do
class << Kernel
sym = '`'.to_sym
alias_method :old_cmd, sym
results = []
define_method(sym) do |str|
results.push str
str
end
`test` # NOVAL NODE_XSTR
`test dynamic #{sym}` # NOVAL NODE_DXSTR
assert_equal ['test', 'test dynamic `'], results
t = `test` # VAL NODE_XSTR
assert_equal 'test', t
assert_equal ['test', 'test dynamic `', 'test'], results
t = `test dynamic #{sym}` # VAL NODE_DXSTR
assert_equal 'test dynamic `', t
assert_equal ['test', 'test dynamic `', 'test', 'test dynamic `'], results
alias_method sym, :old_cmd
end
true
end
|
