tests/basics: Add more tuple tests to improve coverage testing.

tests/basics/builtin_hash.py

@@ -3,6 +3,7 @@
 print(hash(False))
 print(hash(True))
 print({():1}) # hash tuple
+print({(1,):1}) # hash non-empty tuple
 print({1 << 66:1}) # hash big int
 print({-(1 << 66):2}) # hash negative big int
 print(hash in {hash:1}) # hash function

tests/basics/tuple1.py

@@ -16,3 +16,18 @@
 print(x[2:3])
 
 print(x + (10, 100, 10000))
+
+# construction of tuple from large iterator (tests implementation detail of uPy)
+print(tuple(range(20)))
+
+# unsupported unary operation
+try:
+    +()
+except TypeError:
+    print('TypeError')
+
+# unsupported type on RHS of add
+try:
+    () + None
+except TypeError:
+    print('TypeError')

tests/basics/tuple_mult.py

@@ -10,3 +10,9 @@
 a = (1, 2, 3)
 c = a * 3
 print(a, c)
+
+# unsupported type on RHS
+try:
+    () * None
+except TypeError:
+    print('TypeError')