+# JSON
+
+${extract json {Url} \
+ { \{ \"Url\": \"http://www.example.com/image/481989943\",\
+ \"Height\": 125,\
+ \"Width\": 100\
+ \} \
+ } \
+ }
+${extract json {Width} \
+ { \{ \"Url\": \"http://www.example.com/image/481989943\",\
+ \"Height\": 125,\
+ \"Width\": 100\
+ \} \
+ } \
+ }
+${extract json {2} {[116, 943, 234, 38793]} }
+${extract json {2} {${extract json{IDs} {\{"other":"foo", "IDs": [116, 943, 234]\} }}} }
+
+${extract json {seconds} { \{"hours":0, "mins":0, "seconds":59\} }}
+${extract json {seconds} {${extract json {2} { ["irrelevant", \{"hours":0, "mins":0, "seconds":59\}] }}}}
+
+${extract json{IDs}{ \{"IDs": \{"1":116, "2":943, "3":234\}\} }}
+expect: {"1":116, "2":943, "3":234}
+
+${extract json{IDs}{ \{"id": \{"a":101, "b":102\}, "IDs": \{"1":116, "2":943, "3":234\}\} }}
+expect: {"1":116, "2":943, "3":234}
+
+<${extract json{nonexistent}{ \{"id": \{"a":101, "b":102\}, "IDs": \{"1":116, "2":943, "3":234\}\} }}>
+expect: <>
+