diff --git a/tests/extmod/uctypes_array_assign_native_le.py b/tests/extmod/uctypes_array_assign_native_le.py
index 6901654dd8..632c4d252b 100644
--- a/tests/extmod/uctypes_array_assign_native_le.py
+++ b/tests/extmod/uctypes_array_assign_native_le.py
@@ -15,9 +15,16 @@ desc = {
     # aligned
     "arr5": (uctypes.ARRAY | 0, uctypes.UINT32 | 1),
     "arr7": (uctypes.ARRAY | 0, 1, {"l": uctypes.UINT32 | 0}),
+
+    "arr8": (uctypes.ARRAY | 0, uctypes.INT8 | 1),
+    "arr9": (uctypes.ARRAY | 0, uctypes.INT16 | 1),
+    "arr10": (uctypes.ARRAY | 0, uctypes.INT32 | 1),
+    "arr11": (uctypes.ARRAY | 0, uctypes.INT64 | 1),
+    "arr12": (uctypes.ARRAY | 0, uctypes.UINT64| 1),
+    "arr13": (uctypes.ARRAY | 1, 1, {"l": {}}),
 }
 
-data = bytearray(5)
+data = bytearray(8)
 
 S = uctypes.struct(uctypes.addressof(data), desc)
 
@@ -44,3 +51,45 @@ assert hex(S.arr5[0]) == "0x66778899"
 print(S.arr5[0] == S.arr7[0].l)
 assert S.arr5[0] == S.arr7[0].l
 
+# assign int8
+S.arr8[0] = 0x11
+print(hex(S.arr8[0]))
+assert hex(S.arr8[0]) == "0x11"
+
+# assign int16
+S.arr9[0] = 0x1122
+print(hex(S.arr9[0]))
+assert hex(S.arr9[0]) == "0x1122"
+
+# assign int32
+S.arr10[0] = 0x11223344
+print(hex(S.arr10[0]))
+assert hex(S.arr10[0]) == "0x11223344"
+
+# assign int64
+S.arr11[0] = 0x11223344
+print(hex(S.arr11[0]))
+assert hex(S.arr11[0]) == "0x11223344"
+
+# assign uint64
+S.arr12[0] = 0x11223344
+print(hex(S.arr12[0]))
+assert hex(S.arr12[0]) == "0x11223344"
+
+# index out of range
+try:
+    print(S.arr8[2])
+except IndexError:
+    print("IndexError")
+
+# syntax error in descriptor
+try:
+    S.arr13[0].l = 0x11
+except TypeError:
+    print("TypeError")
+
+# operation not supported
+try:
+    S.arr13[0] = 0x11
+except TypeError:
+    print("TypeError")
diff --git a/tests/extmod/uctypes_array_assign_native_le.py.exp b/tests/extmod/uctypes_array_assign_native_le.py.exp
index 0c3dc50fb0..4efcdec668 100644
--- a/tests/extmod/uctypes_array_assign_native_le.py.exp
+++ b/tests/extmod/uctypes_array_assign_native_le.py.exp
@@ -3,3 +3,11 @@
 0x4455
 0x66778899
 True
+0x11
+0x1122
+0x11223344
+0x11223344
+0x11223344
+IndexError
+TypeError
+TypeError
diff --git a/tests/extmod/uctypes_le.py b/tests/extmod/uctypes_le.py
index ff499476f9..5ae410b011 100644
--- a/tests/extmod/uctypes_le.py
+++ b/tests/extmod/uctypes_le.py
@@ -66,3 +66,22 @@ assert bytes(data) == b"21"
 S.bf3 = 5
 print(data)
 assert bytes(data) == b"2Q"
+
+desc2 = {
+    "bf8": uctypes.BFUINT8 | 0 | 0 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
+    "bf32": uctypes.BFUINT32 | 0 | 20 << uctypes.BF_POS | 4 << uctypes.BF_LEN
+}
+
+data2 = bytearray(b"0123")
+
+S2 = uctypes.struct(uctypes.addressof(data2), desc2, uctypes.LITTLE_ENDIAN)
+
+# bitfield using uint8 as base type
+S2.bf8 = 5
+print(data2)
+assert bytes(data2) == b"5123"
+
+# bitfield using uint32 as base type
+S2.bf32 = 5
+print(data2)
+assert bytes(data2) == b"51R3"
diff --git a/tests/extmod/uctypes_le.py.exp b/tests/extmod/uctypes_le.py.exp
index 8efd7a6ea0..2598b4eabd 100644
--- a/tests/extmod/uctypes_le.py.exp
+++ b/tests/extmod/uctypes_le.py.exp
@@ -8,3 +8,5 @@ bf: 48 49
 bf 4bit: 3 1 3 0
 bytearray(b'21')
 bytearray(b'2Q')
+bytearray(b'5123')
+bytearray(b'51R3')
diff --git a/tests/extmod/uctypes_native_le.py b/tests/extmod/uctypes_native_le.py
index a053b68d55..ef0f9f5e95 100644
--- a/tests/extmod/uctypes_native_le.py
+++ b/tests/extmod/uctypes_native_le.py
@@ -74,3 +74,22 @@ assert bytes(data) == b"21"
 S.bf3 = 5
 print(data)
 assert bytes(data) == b"2Q"
+
+desc2 = {
+    "bf8": uctypes.BFUINT8 | 0 | 0 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
+    "bf32": uctypes.BFUINT32 | 0 | 20 << uctypes.BF_POS | 4 << uctypes.BF_LEN
+}
+
+data2 = bytearray(b"0123")
+
+S2 = uctypes.struct(uctypes.addressof(data2), desc2, uctypes.NATIVE)
+
+# bitfield using uint8 as base type
+S2.bf8 = 5
+print(data2)
+assert bytes(data2) == b"5123"
+
+# bitfield using uint32 as base type
+S2.bf32 = 5
+print(data2)
+assert bytes(data2) == b"51R3"
diff --git a/tests/extmod/uctypes_native_le.py.exp b/tests/extmod/uctypes_native_le.py.exp
index 8efd7a6ea0..2598b4eabd 100644
--- a/tests/extmod/uctypes_native_le.py.exp
+++ b/tests/extmod/uctypes_native_le.py.exp
@@ -8,3 +8,5 @@ bf: 48 49
 bf 4bit: 3 1 3 0
 bytearray(b'21')
 bytearray(b'2Q')
+bytearray(b'5123')
+bytearray(b'51R3')
diff --git a/tests/extmod/uctypes_print.py b/tests/extmod/uctypes_print.py
new file mode 100644
index 0000000000..71981ce7ea
--- /dev/null
+++ b/tests/extmod/uctypes_print.py
@@ -0,0 +1,22 @@
+# test printing of uctypes objects
+
+import uctypes
+
+# we use an address of "0" because we just want to print something deterministic
+# and don't actually need to set/get any values in the struct
+
+desc = {"arr": (uctypes.ARRAY | 0, uctypes.UINT8 | 1)}
+S = uctypes.struct(0, desc)
+print(S)
+
+desc2 = [(uctypes.ARRAY | 0, uctypes.UINT8 | 1)]
+S2 = uctypes.struct(0, desc2)
+print(S2)
+
+desc3 = ((uctypes.ARRAY | 0, uctypes.UINT8 | 1))
+S3 = uctypes.struct(0, desc3)
+print(S3)
+
+desc4 = ((uctypes.PTR | 0, uctypes.UINT8 | 1))
+S4 = uctypes.struct(0, desc4)
+print(S4)
diff --git a/tests/extmod/uctypes_print.py.exp b/tests/extmod/uctypes_print.py.exp
new file mode 100644
index 0000000000..63daefc848
--- /dev/null
+++ b/tests/extmod/uctypes_print.py.exp
@@ -0,0 +1,4 @@
+<struct STRUCT 0>
+<struct ERROR 0>
+<struct ARRAY 0>
+<struct PTR 0>