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')