added conjugate array method (#1011)

Author: Alexander-Makaryev

dpnp/dpnp_array.py

@@ -390,7 +390,19 @@ def conj(self):
         else:
             return dpnp.conjugate(self)
 
- # 'conjugate',
+    def conjugate(self):
+        """
+        Return the complex conjugate, element-wise.
+
+        For full documentation refer to :obj:`numpy.ndarray.conjugate`.
+
+        """
+
+        if not numpy.issubsctype(self.dtype, numpy.complex):
+            return self
+        else:
+            return dpnp.conjugate(self)
+
  # 'copy',
  # 'ctypes',
  # 'cumprod',

tests/skipped_tests_gpu.tbl

@@ -385,8 +385,6 @@ tests/third_party/cupy/core_tests/test_ndarray_complex_ops.py::TestRealImag::tes
 tests/third_party/cupy/core_tests/test_ndarray_complex_ops.py::TestRealImag::test_real_setter_zero_dim
 tests/third_party/cupy/core_tests/test_ndarray_complex_ops.py::TestRealImag::test_real_zero_dim
 tests/third_party/cupy/core_tests/test_ndarray_complex_ops.py::TestScalarConversion::test_scalar_conversion
-tests/third_party/cupy/core_tests/test_ndarray_complex_ops.py::TestConj::test_conjugate
-tests/third_party/cupy/core_tests/test_ndarray_complex_ops.py::TestConj::test_conjugate_pass
 tests/third_party/cupy/core_tests/test_ndarray_copy_and_view.py::TestArrayCopyAndView::test_astype
 tests/third_party/cupy/core_tests/test_ndarray_copy_and_view.py::TestArrayCopyAndView::test_astype_type
 tests/third_party/cupy/core_tests/test_ndarray_copy_and_view.py::TestArrayCopyAndView::test_astype_strides