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test_convert.py
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260 lines (222 loc) · 8.19 KB
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import unittest
from jpype import JArray, JInt, JLong
from scyjava import Converter, config, jclass, jimport, start_jvm, to_java, to_python
config.endpoints.append('org.scijava:scijava-table')
config.add_option('-Djava.awt.headless=true')
def assert_same_table(table, df):
assert len(table.toArray()) == df.shape[1]
assert len(table.toArray()[0].toArray()) == df.shape[0]
for i, column in enumerate(table.toArray()):
npt.assert_array_almost_equal(df.iloc[:, i].values, column.toArray())
assert table.getColumnHeader(i) == df.columns[i]
class TestConvert(unittest.TestCase):
def testClass(self):
"""
Tests class detection from Java objects.
"""
int_class = jclass(to_java(5))
self.assertEqual('java.lang.Integer', int_class.getName())
long_class = jclass(to_java(4000000001))
self.assertEqual('java.lang.Long', long_class.getName())
bigint_class = jclass(to_java(9879999999999999789))
self.assertEqual('java.math.BigInteger', bigint_class.getName())
string_class = jclass(to_java('foobar'))
self.assertEqual('java.lang.String', string_class.getName())
list_class = jclass(to_java([1, 2, 3]))
self.assertEqual('java.util.ArrayList', list_class.getName())
map_class = jclass(to_java({'a':'b'}))
self.assertEqual('java.util.LinkedHashMap', map_class.getName())
self.assertEqual('java.util.Map', jclass('java.util.Map').getName())
def testBoolean(self):
jt = to_java(True)
self.assertEqual(True, jt.booleanValue())
pt = to_python(jt)
self.assertEqual(True, pt)
self.assertEqual('True', str(pt))
jf = to_java(False)
self.assertEqual(False, jf.booleanValue())
pf = to_python(jf)
self.assertEqual(False, pf)
self.assertEqual('False', str(pf))
def testInteger(self):
i = 5
ji = to_java(i)
self.assertEqual(i, ji.intValue())
pi = to_python(ji)
self.assertEqual(i, pi)
self.assertEqual(str(i), str(pi))
def testLong(self):
l = 4000000001
jl = to_java(l)
self.assertEqual(l, jl.longValue())
pl = to_python(jl)
self.assertEqual(l, pl)
self.assertEqual(str(l), str(pl))
def testBigInteger(self):
bi = 9879999999999999789
jbi = to_java(bi)
self.assertEqual(bi, int(str(jbi.toString())))
pbi = to_python(jbi)
self.assertEqual(bi, pbi)
self.assertEqual(str(bi), str(pbi))
def testFloat(self):
f = 5.
jf = to_java(f)
self.assertEqual(f, jf.floatValue())
pf = to_python(jf)
self.assertEqual(f, pf)
self.assertEqual(str(f), str(pf))
def testDouble(self):
Float = jimport('java.lang.Float')
d = Float.MAX_VALUE * 2
jd = to_java(d)
self.assertEqual(d, jd.doubleValue())
pd = to_python(jd)
self.assertEqual(d, pd)
self.assertEqual(str(d), str(pd))
def testString(self):
s = 'Hello world!'
js = to_java(s)
for e, a in zip(s, js.toCharArray()):
self.assertEqual(e, a)
ps = to_python(js)
self.assertEqual(s, ps)
self.assertEqual(str(s), str(ps))
def testList(self):
l = 'The quick brown fox jumps over the lazy dogs'.split()
jl = to_java(l)
for e, a in zip(l, jl):
self.assertEqual(e, to_python(a))
pl = to_python(jl)
self.assertEqual(l, pl)
self.assertEqual(str(l), str(pl))
self.assertEqual(pl[1], 'quick')
pl[7] = 'silly'
self.assertEqual('The quick brown fox jumps over the silly dogs', ' '.join(pl))
def testSet(self):
s = set(['orange', 'apple', 'pineapple', 'plum'])
js = to_java(s)
self.assertEqual(len(s), js.size())
for e in s:
self.assertTrue(js.contains(to_java(e)))
ps = to_python(js)
self.assertEqual(s, ps)
self.assertEqual(str(s), str(ps))
def testArray(self):
start_jvm()
arr = JArray(JInt)(4)
for i in range(len(arr)):
arr[i] = to_java(i)
py_arr = to_python(arr)
assert py_arr == [0, 1, 2, 3]
def testDict(self):
d = {
'access_log': [
{'stored_proc': 'getsomething'},
{'uses': [
{'usedin': 'some->bread->crumb'},
{'usedin': 'something else here'},
{'stored_proc': 'anothersp'}
]},
{'uses': [
{'usedin': 'blahblah'}
]}
],
'reporting': [
{'stored_proc': 'reportingsp'},
{'uses': [{'usedin': 'breadcrumb'}]}
]
}
jd = to_java(d)
self.assertEqual(len(d), jd.size())
for k, v in d.items():
jk = to_java(k)
self.assertTrue(jd.containsKey(jk))
self.assertEqual(v, to_python(jd.get(jk)))
pd = to_python(jd)
self.assertEqual(d, pd)
self.assertEqual(str(d), str(pd))
def testMixed(self):
d = {'a':'b', 'c':'d'}
l = ['e', 'f', 'g', 'h']
s = set(['i', 'j', 'k'])
# mixed types in a dictionary
md = {'d': d, 'l': l, 's': s, 'str': 'hello'}
jmd = to_java(md)
self.assertEqual(len(md), jmd.size())
for k, v in md.items():
jk = to_java(k)
self.assertTrue(jmd.containsKey(jk))
self.assertEqual(v, to_python(jmd.get(jk)))
pmd = to_python(jmd)
self.assertEqual(md, pmd)
self.assertEqual(str(md), str(pmd))
# mixed types in a list
ml = [d, l, s, 'hello']
jml = to_java(ml)
for e, a in zip(ml, jml):
self.assertEqual(e, to_python(a))
pml = to_python(jml)
self.assertEqual(ml, pml)
self.assertEqual(str(ml), str(pml))
def testNone(self):
d = {'key':None, None:'value', 'foo':'bar'}
jd = to_java(d)
self.assertEqual(3, jd.size())
self.assertEqual(None, jd.get('key'))
self.assertEqual('value', jd.get(None))
self.assertEqual('bar', jd.get('foo'))
pd = to_python(jd)
self.assertEqual(d, pd)
def testGentle(self):
Object = jimport('java.lang.Object')
unknown_thing = Object()
converted_thing = to_python(unknown_thing, gentle=True)
assert type(converted_thing) == Object
bad_conversion = None
try:
bad_conversion = to_python(unknown_thing)
except:
# NB: Failure is expected here.
pass
self.assertIsNone(bad_conversion)
def testStructureWithSomeUnsupportedItems(self):
# Create Java data structure with some challenging items.
Object = jimport('java.lang.Object')
jmap = to_java({
'list': ['a', Object(), 1],
'set': {'x', Object(), 2},
'object': Object(),
'foo': 'bar'
})
self.assertEqual('java.util.LinkedHashMap', jclass(jmap).getName())
# Convert it back to Python.
pdict = to_python(jmap)
l = pdict['list']
self.assertEqual(pdict['list'][0], 'a')
assert type(pdict['list'][1]) == Object
assert pdict['list'][2] == 1
assert 'x' in pdict['set']
assert 2 in pdict['set']
assert len(pdict['set']) == 3
assert type(pdict['object']) == Object
self.assertEqual(pdict['foo'], 'bar')
def test_conversion_priority(self):
# Add a converter prioritized over the default converter
String = jimport('java.lang.String')
invader = 'Not Hello World'
from scyjava import add_java_converter
add_java_converter(
Converter(
predicate=lambda obj: isinstance(obj, str),
converter=lambda obj: String(invader.encode('utf-8'), 'utf-8'),
priority=100
)
)
# Ensure that the conversion uses our new converter
s = 'Hello world!'
js = to_java(s)
for e, a in zip(invader, js.toCharArray()):
self.assertEqual(e, a)
if __name__ == '__main__':
unittest.main()