1 files changed, 73 insertions, 0 deletions
diff --git a/tests/extmod/json_loads.py b/tests/extmod/json_loads.py
new file mode 100644
index 000000000..f9073c121
--- /dev/null
+++ b/tests/extmod/json_loads.py
@@ -0,0 +1,73 @@
+try:
+    import json
+except ImportError:
+    print("SKIP")
+    raise SystemExit
+
+
+def my_print(o):
+    if isinstance(o, dict):
+        print("sorted dict", sorted(o.items()))
+    else:
+        print(o)
+
+
+my_print(json.loads("null"))
+my_print(json.loads("false"))
+my_print(json.loads("true"))
+my_print(json.loads("1"))
+my_print(json.loads("-2"))
+my_print(json.loads('"abc\\u0064e"'))
+my_print(json.loads("[]"))
+my_print(json.loads("[null]"))
+my_print(json.loads("[null,false,true]"))
+my_print(json.loads(" [ null , false , true ] "))
+my_print(json.loads("{}"))
+my_print(json.loads('{"a":true}'))
+my_print(json.loads('{"a":null, "b":false, "c":true}'))
+my_print(json.loads('{"a":[], "b":[1], "c":{"3":4}}'))
+my_print(json.loads('"abc\\bdef"'))
+my_print(json.loads('"abc\\fdef"'))
+my_print(json.loads('"abc\\ndef"'))
+my_print(json.loads('"abc\\rdef"'))
+my_print(json.loads('"abc\\tdef"'))
+my_print(json.loads('"abc\\uabcd"'))
+
+# whitespace handling
+my_print(json.loads('{\n\t"a":[]\r\n, "b":[1], "c":{"3":4}     \n\r\t\r\r\r\n}'))
+
+# loading nothing should raise exception
+try:
+    json.loads("")
+except ValueError:
+    print("ValueError")
+
+# string which is not closed
+try:
+    my_print(json.loads('"abc'))
+except ValueError:
+    print("ValueError")
+
+# unaccompanied closing brace
+try:
+    my_print(json.loads("]"))
+except ValueError:
+    print("ValueError")
+
+# unspecified object type
+try:
+    my_print(json.loads("a"))
+except ValueError:
+    print("ValueError")
+
+# bad property name
+try:
+    my_print(json.loads('{{}:"abc"}'))
+except ValueError:
+    print("ValueError")
+
+# unexpected characters after white space
+try:
+    my_print(json.loads("[null]   a"))
+except ValueError:
+    print("ValueError")