Explicitly test \n and \r\n files

\r\n files must be working due to micropython's built in handling of
text-mode files, I didn't implement it.

\r-only (old mac text-mode files) are explicitly not supported by
the toml format.

tests/circuitpython/getenv.py

@@ -35,7 +35,7 @@ bdev = RAMBlockDevice(64)
 uos.VfsFat.mkfs(bdev)
 uos.mount(uos.VfsFat(bdev), "/")
 
-content_good = """
+content_good = b"""
 # comment
 key0 = "hello world"
 key1 = 7
@@ -54,15 +54,15 @@ subvalue = "hi"
 """
 
 content_bad = [
-    'key = "\n',
-    'key = """\n',
-    "key =\n",
-    'key="',
+    b'key = "\n',
+    b'key = """\n',
+    b"key =\n",
+    b'key="',
 ]
 
 
 def run_test(key, content):
-    with open("/settings.toml", "w") as f:
+    with open("/settings.toml", "wb") as f:
         f.write(content)
 
     try:
@@ -72,11 +72,15 @@ def run_test(key, content):
         print(key, str(e))
 
 
+for i in range(13):
+    run_test(f"key{i}", content_good)
+
+content_good = content_good.replace(b"\n", b"\r\n")
 for i in range(13):
     run_test(f"key{i}", content_good)
 
 # Test value without trailing newline
-run_test(f"noeol", "noeol=3")
+run_test(f"noeol", b"noeol=3")
 
 for content in content_bad:
     run_test("key", content)

tests/circuitpython/getenv.py.exp

@@ -11,6 +11,19 @@ key9 'hello comment'
 key10 127
 key11 0
 key12 None
+key0 'hello world'
+key1 7
+key2 Invalid byte '\n'
+key3 'Áx'
+key4 'Áx'
+key5 Invalid byte '\\'
+key6 '\t\r\x08'
+key7 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'
+key8 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'
+key9 'hello comment'
+key10 127
+key11 0
+key12 None
 noeol 3
 key Invalid byte '\n'
 key Invalid byte '"'