tests/basics: Split out memoryview slice-assign tests to separate file.

Signed-off-by: Damien George <damien@micropython.org>

tests/basics/memoryview1.py

@@ -54,54 +54,6 @@ print(list(m[1:-1]))
 m[2] = 6
 print(a)
 
-# test slice assignment between memoryviews
-b1 = bytearray(b'1234')
-b2 = bytearray(b'5678')
-b3 = bytearray(b'5678')
-m1 = memoryview(b1)
-m2 = memoryview(b2)
-m3 = memoryview(b3)
-m2[1:3] = m1[0:2]
-print(b2)
-b3[1:3] = m1[0:2]
-print(b3)
-m1[2:4] = b3[1:3]
-print(b1)
-
-try:
-    m2[1:3] = b1[0:4]
-except ValueError:
-    print("ValueError")
-
-try:
-    m2[1:3] = m1[0:4]
-except ValueError:
-    print("ValueError")
-
-try:
-    m2[0:4] = m1[1:3]
-except ValueError:
-    print("ValueError")
-
-# test memoryview of arrays with items sized larger than 1
-a1 = array.array('i', [0]*5)
-m4 = memoryview(a1)
-a2 = array.array('i', [3]*5)
-m5 = memoryview(a2)
-m4[1:3] = m5[1:3]
-print(a1)
-
-try:
-    m4[1:3] = m2[1:3]
-except ValueError:
-    print("ValueError")
-
-# invalid assignment on RHS
-try:
-    memoryview(array.array('i'))[0:2] = b'1234'
-except ValueError:
-    print('ValueError')
-
 # invalid attribute
 try:
     memoryview(b'a').noexist

tests/basics/memoryview_slice_assign.py

+# test slice assignment to memoryview
+
+try:
+    memoryview(bytearray(1))[:] = memoryview(bytearray(1))
+except (NameError, TypeError):
+    print("SKIP")
+    raise SystemExit
+
+try:
+    import uarray as array
+except ImportError:
+    try:
+        import array
+    except ImportError:
+        print("SKIP")
+        raise SystemExit
+
+# test slice assignment between memoryviews
+b1 = bytearray(b'1234')
+b2 = bytearray(b'5678')
+b3 = bytearray(b'5678')
+m1 = memoryview(b1)
+m2 = memoryview(b2)
+m3 = memoryview(b3)
+m2[1:3] = m1[0:2]
+print(b2)
+b3[1:3] = m1[0:2]
+print(b3)
+m1[2:4] = b3[1:3]
+print(b1)
+
+# invalid slice assignments
+try:
+    m2[1:3] = b1[0:4]
+except ValueError:
+    print("ValueError")
+try:
+    m2[1:3] = m1[0:4]
+except ValueError:
+    print("ValueError")
+try:
+    m2[0:4] = m1[1:3]
+except ValueError:
+    print("ValueError")
+
+# test memoryview of arrays with items sized larger than 1
+a1 = array.array('i', [0]*5)
+m4 = memoryview(a1)
+a2 = array.array('i', [3]*5)
+m5 = memoryview(a2)
+m4[1:3] = m5[1:3]
+print(a1)
+
+try:
+    m4[1:3] = m2[1:3]
+except ValueError:
+    print("ValueError")
+
+# invalid assignment on RHS
+try:
+    memoryview(array.array('i'))[0:2] = b'1234'
+except ValueError:
+    print('ValueError')