fix qr function

Author: vtavana

dpnp/backend/kernels/dpnp_krnl_linalg.cpp

@@ -612,6 +612,9 @@ DPCTLSyclEventRef dpnp_qr_c(DPCTLSyclQueueRef q_ref,
     (void)dep_event_vec_ref;
 
     DPCTLSyclEventRef event_ref = nullptr;
+    if (!size_m || !size_n) {
+        return event_ref;
+    }
     sycl::queue q = *(reinterpret_cast<sycl::queue *>(q_ref));
 
     sycl::event event;

dpnp/linalg/dpnp_iface_linalg.py

@@ -488,7 +488,9 @@ def qr(x1, mode="reduced"):
 
     x1_desc = dpnp.get_dpnp_descriptor(x1, copy_when_nondefault_queue=False)
     if x1_desc:
-        if mode != "reduced":
+        if x1_desc.ndim != 2:
+            pass
+        elif mode != "reduced":
             pass
         else:
             result_tup = dpnp_qr(x1_desc, mode)

tests/test_linalg.py

@@ -358,8 +358,8 @@ def test_norm3(array, ord, axis):
 @pytest.mark.parametrize("type", get_all_dtypes(no_bool=True, no_complex=True))
 @pytest.mark.parametrize(
     "shape",
-    [(2, 2), (3, 4), (5, 3), (16, 16)],
-    ids=["(2,2)", "(3,4)", "(5,3)", "(16,16)"],
+    [(2, 2), (3, 4), (5, 3), (16, 16), (0, 0), (0, 2), (2, 0)],
+    ids=["(2,2)", "(3,4)", "(5,3)", "(16,16)", "(0,0)", "(0,2)", "(2,0)"],
 )
 @pytest.mark.parametrize(
     "mode", ["complete", "reduced"], ids=["complete", "reduced"]