def test_args(self):
from java.lang import String
test = self
class C(dynamic_proxy(TP.Args)):
def tooMany(self):
pass
def tooFew(self, a):
pass
def addDuck(self, a, b):
return a + b
def star(self, *args):
return ",".join(args)
def varargs(self, delim, args):
test.assertIsInstance(args, jarray(String))
return delim.join(args)
c = C()
c_Args = cast(TP.Args, c)
with self.assertRaisesRegexp(PyException, args_error(1, 2)):
c_Args.tooMany(42)
with self.assertRaisesRegexp(PyException, args_error(2, 1)):
c_Args.tooFew()
self.assertEqual(3, c_Args.addDuck(jint(1), jint(2)))
self.assertAlmostEqual(3.5, c_Args.addDuck(jfloat(1), jfloat(2.5)))
self.assertEqual("helloworld", c_Args.addDuck("hello", "world"))
self.assertEqual("", c_Args.star())
self.assertEqual("hello", c_Args.star("hello"))
self.assertEqual("hello,world", c_Args.star("hello", "world"))
with self.assertRaisesRegexp(TypeError, "cannot be applied"):
c_Args.star("hello", "world", "again")
self.assertEqual("hello,world,again", c.star("hello", "world",
"again"))
with self.assertRaisesRegexp(TypeError, args_error(1, 0,
varargs=True)):
c_Args.varargs()
self.assertEqual("", c_Args.varargs(":"))
self.assertEqual("hello", c_Args.varargs("|", "hello"))
self.assertEqual("hello|world", c_Args.varargs("|", "hello", "world"))
def test_primitive(self):
obj = jclass("com.chaquo.python.TestOverload$Primitive")()
self.assertEqual(obj.resolve(True), 'boolean true')
self.assertEqual(obj.resolve(jboolean(True)), 'boolean true')
self.assertEqual(obj.resolve(42), 'long 42')
self.assertEqual(obj.resolve(jbyte(42)), 'byte 42')
self.assertEqual(obj.resolve(jshort(42)), 'short 42')
self.assertEqual(obj.resolve(jint(42)), 'int 42')
self.assertEqual(obj.resolve(jlong(42)), 'long 42')
self.assertEqual(obj.resolve(1.23), 'double 1.23')
self.assertEqual(obj.resolve(jfloat(1.23)), 'float 1.23')
self.assertEqual(obj.resolve(jdouble(1.23)), 'double 1.23')
# When passing an int, applicable integral overloads should be preferred over floating
# overloads no matter what the value is.
self.assertEqual(obj.resolve_SF(42), 'short 42')
with self.too_big:
obj.resolve_SF(100000)
self.assertEqual(obj.resolve_SF(float(100000)), 'float 100000.0')
self.assertEqual(obj.resolve_IJ(42), 'long 42')
self.assertEqual(obj.resolve_IJ(jbyte(42)), 'int 42')
self.assertEqual(obj.resolve_IJ(jshort(42)), 'int 42')
self.assertEqual(obj.resolve_IJ(jint(42)), 'int 42')
self.assertEqual(obj.resolve_IJ(jlong(42)), 'long 42')
self.assertEqual(obj.resolve_BIF(42), 'int 42')
self.assertEqual(obj.resolve_BIF(jbyte(42)), 'byte 42')
self.assertEqual(obj.resolve_BIF(jshort(42)), 'int 42')
self.assertEqual(obj.resolve_BIF(jint(42)), 'int 42')
self.assertEqual(obj.resolve_BIF(jlong(42)), 'float 42.0')
self.assertEqual(obj.resolve_BIF(jfloat(42)), 'float 42.0')
with self.inapplicable:
obj.resolve_BIF(jdouble(42))
# This may seem inconsistent, but it's what Java does. float and double are both
# applicable when passing an int, and float is more specific.
self.assertEqual(obj.resolve_FD(42), 'float 42.0')
self.assertEqual(obj.resolve_FD(42.0), 'double 42.0')
self.assertEqual(obj.resolve_FD(jdouble(42)), 'double 42.0')
def test_boxing(self):
obj = jclass("com.chaquo.python.TestOverload$Boxing")()
Boolean = jclass("java.lang.Boolean")
self.assertEqual(obj.resolve_Z_Boolean(True), 'boolean true')
self.assertEqual(obj.resolve_Z_Boolean(jboolean(True)), 'boolean true')
self.assertEqual(obj.resolve_Z_Boolean(Boolean(True)), 'Boolean true')
self.assertEqual(obj.resolve_Z_Object(True), 'boolean true')
self.assertEqual(obj.resolve_Z_Object(jboolean(True)), 'boolean true')
self.assertEqual(obj.resolve_Z_Object(Boolean(True)), 'Object true')
Long = jclass("java.lang.Long")
Short = jclass("java.lang.Short")
# When passing a primitive, applicable primitive overloads should be preferred over
# boxed overloads no matter what the value is.
self.assertEqual(obj.resolve_S_Long(42), 'short 42')
with self.too_big:
obj.resolve_S_Long(100000)
self.assertEqual(obj.resolve_S_Long(jlong(100000)), 'Long 100000')
self.assertEqual(obj.resolve_S_Long(jbyte(42)), 'short 42')
self.assertEqual(obj.resolve_S_Long(jshort(42)), 'short 42')
with self.inapplicable:
# Automatic primitive conversion cannot be combined with autoboxing (JLS 5.3).
obj.resolve_S_Long(jint(42))
self.assertEqual(obj.resolve_S_Long(jlong(42)), 'Long 42')
self.assertEqual(obj.resolve_S_Long(Long(42)), 'Long 42')
with self.inapplicable:
# Auto-unboxing is not currently implemented.
obj.resolve_S_Long(Short(42))
self.assertEqual(obj.resolve_Short_L(42), 'long 42')
self.assertEqual(obj.resolve_Short_L(100000), 'long 100000')
self.assertEqual(obj.resolve_Short_L(jbyte(42)), 'long 42')
self.assertEqual(obj.resolve_Short_L(jshort(42)), 'long 42')
self.assertEqual(obj.resolve_Short_L(jint(42)), 'long 42')
self.assertEqual(obj.resolve_Short_L(jlong(42)), 'long 42')
self.assertEqual(obj.resolve_Short_L(Short(42)), 'Short 42')
with self.ambiguous:
obj.resolve_Short_Long(42)
with self.too_big:
# It would be better to give an ambiguous overload error, but this message should
# be clear enough to indicate that the short overload is being considered, and the
# programmer can then use a wrapper to exclude it.
obj.resolve_Short_Long(100000)
with self.inapplicable:
obj.resolve_Short_Long(jbyte(42))
self.assertEqual(obj.resolve_Short_Long(jshort(42)), 'Short 42')
with self.inapplicable:
obj.resolve_Short_Long(jint(42))
self.assertEqual(obj.resolve_Short_Long(jlong(42)), 'Long 42')
self.assertEqual(obj.resolve_Short_Long(jlong(100000)), 'Long 100000')
with self.ambiguous:
obj.resolve_Integer_Float(42)
self.assertEqual(obj.resolve_Integer_Float(42.0), 'Float 42.0')
self.assertEqual(obj.resolve_Integer_Float(jfloat(42)), 'Float 42.0')
with self.ambiguous:
obj.resolve_Float_Double(42)
with self.ambiguous:
obj.resolve_Float_Double(42.0)
with self.inapplicable:
obj.resolve_Float_Double(jint(42))
self.assertEqual(obj.resolve_Float_Double(jfloat(42)), 'Float 42.0')
self.assertEqual(obj.resolve_Float_Double(jdouble(42)), 'Double 42.0')