stm32/sdmmc: add hil test for f4.

tests/stm32/gen_test.py

@@ -0,0 +1,44 @@
+import os
+import toml
+from glob import glob
+
+abspath = os.path.abspath(__file__)
+dname = os.path.dirname(abspath)
+os.chdir(dname)
+
+# ======= load test list
+tests = {}
+for f in sorted(glob('./src/bin/*.rs')):
+    name = os.path.splitext(os.path.basename(f))[0]
+    features = []
+    with open(f, 'r') as f:
+        for line in f:
+            if line.startswith('// required-features:'):
+                features = line.split(':', 2)[1].strip().split(',')
+
+    tests[name] = features
+
+# ========= Update Cargo.toml
+
+things = {
+    'bin': [
+        {
+            'name': f'{name}',
+            'path': f'src/bin/{name}.rs',
+            'required-features': features,
+        }
+        for name, features in tests.items()
+    ]
+}
+
+SEPARATOR_START = '# BEGIN TESTS\n'
+SEPARATOR_END = '# END TESTS\n'
+HELP = '# Generated by gen_test.py. DO NOT EDIT.\n'
+with open('Cargo.toml', 'r') as f:
+    data = f.read()
+before, data = data.split(SEPARATOR_START, maxsplit=1)
+_, after = data.split(SEPARATOR_END, maxsplit=1)
+data = before + SEPARATOR_START + HELP + \
+    toml.dumps(things) + SEPARATOR_END + after
+with open('Cargo.toml', 'w') as f:
+    f.write(data)