tests: Add tests for SyntaxError, TypeError, and other missing things.

This is intended to improve coverage of the test suite.

tests/basics/array1.py

@@ -11,3 +11,12 @@ print(i[-1])
 print(len(array.array('h')))
 print(array.array('i'))
 
+# bool operator acting on arrays
+print(bool(array.array('i')))
+print(bool(array.array('i', [1])))
+
+# bad typecode
+try:
+    array.array('X')
+except ValueError:
+    print("ValueError")