tests/ports/unix: Add coverage test for frozen functions and generators.

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

ports/unix/variants/coverage/frzmpy/frzmpy4.py

@@ -0,0 +1,16 @@
+# Test importing frozen functions.
+
+# A simple bytecode function with no children.
+def f():
+    return 1
+
+
+print(__name__, f())
+
+
+# A simple bytecode generator with no children.
+def g():
+    yield 2
+
+
+print(__name__, next(g()))

tests/ports/unix/extra_coverage.py

@@ -87,6 +87,9 @@ except ZeroDivisionError:
 # test importing various objects
 import frzmpy3
 
+# test importing other things
+import frzmpy4
+
 # test for MP_QSTR_NULL regression
 from frzqstr import returns_NULL
 

tests/ports/unix/extra_coverage.py.exp

@@ -201,6 +201,8 @@ ZeroDivisionError
 X
 '\x1b'
 b'\x00\xff'
+frzmpy4 1
+frzmpy4 2
 NULL
 uPy
 a long string that is not interned