{
  "No varspec (section 3.3, paragraph 3)" :
  {
    "variables": {
       "var"   : "value"
     },
     "testcases" : [
        ["{}", "{}"],
        ["{,}", "{,}"],
        ["{,,}", "{,,}"]
     ]
  },
  "Missing closing brace (section 3.3 paragraph 4)" :
  {
    "variables": {
       "var"   : "value",
       "hello" : "Hello World!",
       "list"  : [ "val1", "val2", "val3" ],
       "keys"  : {"key1": "val1", "key2": "val2"},
       "x"     : "1024",
       "y"     : "768"
     },
     "testcases" : [
        ["{var", "value"],
        ["{hello", "Hello%20World%21"],
        ["{x,y", "1024,768"],
        ["{var=default", "value"],
        ["{undef=default", "default"],
        ["{list", "val1,val2,val3"],
        ["{list*", "val1,val2,val3"],
        ["{list+", "list.val1,list.val2,list.val3"],
        ["{keys", "key1,val1,key2,val2"],
        ["{keys*", "key1,val1,key2,val2"],
        ["{keys+", "keys.key1,val1,keys.key2,val2"]
     ]
  },
  "varspec of only operator and explodes (section 3.3?)" :
  {
    "variables": {
       "var"   : "value"
     },
     "testcases" : [
        ["{+}", "{+}"],
        ["{;}", "{;}"],
        ["{?}", "{?}"],
        ["{/}", "{/}"],
        ["{.}", "{.}"],
        ["{+,}", "{+,}"],
        ["{;,}", "{;,}"],
        ["{?,}", "{?,}"],
        ["{/,}", "{/,}"],
        ["{.,}", "{.,}"],
        ["{++}", "{++}"],
        ["{;+}", "{;+}"],
        ["{?+}", "{?+}"],
        ["{/+}", "{/+}"],
        ["{.+}", "{.+}"],
        ["{+*}", "{+*}"],
        ["{;*}", "{;*}"],
        ["{?*}", "{?*}"],
        ["{/*}", "{/*}"],
        ["{.*}", "{.*}"]
     ]
  },
  "One good varspec and bad varspecs (section 3.3, paragraph 3?)" :
  {
    "variables": {
       "var"   : "value"
     },
     "testcases" : [
        ["{var,}", "value"],
        ["{,var}", "value"],
        ["{,var,,}", "value"],
        ["{+var,,}", "value"],
        ["{;var,,}", ";var=value"],
        ["{?var,,}", "?var=value"],
        ["{/var,,}", "/value"],
        ["{.var,,}", ".value"],
        ["{+,var,}", "value"],
        ["{;,var,}", ";var=value"],
        ["{?,var,}", "?var=value"],
        ["{/,var,}", "/value"],
        ["{.,var,}", ".value"],
        ["{+,,var}", "value"],
        ["{;,,var}", ";var=value"],
        ["{?,,var}", "?var=value"],
        ["{/,,var}", "/value"],
        ["{.,,var}", ".value"]
     ]
  },
  "Multiple undefined variables (section 3.4)" :
  {
    "variables": {
       "var"   : "value"
     },
     "testcases" : [
        ["{undef1,undef2}", ""],
        ["{+undef1,undef2}", ""],
        ["{;undef1,undef2}", ""],
        ["{?undef1,undef2}", ""],
        ["{/undef1,undef2}", ""],
        ["{.undef1,undef2}", ""]
     ]
  },
  "Default with variable in varspec (just reported like above cases)" :
  {
    "variables": {
       "var"   : "value"
     },
     "testcases" : [
        ["{=foo}", "{=foo}"]
     ]
  },
  "varspec with bad partial (partial gets ignored)" :
  {
    "variables": {
       "var"   : "value"
     },
     "testcases" : [
        ["{var:}", "value"],
        ["{var^}", "value"]
     ]
  },
  "Default of empty string and edge cases with empty strings" :
  {
    "variables": {
       "empty" : "",
       "x"     : "1024",
       "y"     : "768"
     },
     "testcases" : [
        ["{empty}", ""],
        ["{;x,empty,y}", ";x=1024;empty;y=768"],
        ["{?x,empty,y}", "?x=1024&empty&y=768"],
        ["{x,empty,y}", "1024,,768"],
        ["{+x,empty,y}", "1024,,768"],
        ["{/x,empty,y}", "/1024//768"],
        ["{.x,empty,y}", ".1024..768"],
        ["{undef=}", ""],
        ["{;x,undef=,y}", ";x=1024;undef;y=768"],
        ["{?x,undef=,y}", "?x=1024&undef&y=768"],
        ["{x,undef=,y}", "1024,,768"],
        ["{+x,undef=,y}", "1024,,768"],
        ["{/x,undef=,y}", "/1024//768"],
        ["{.x,undef=,y}", ".1024..768"]
     ]
  },
  "Two defaults for one variable" :
  {
    "variables": {
       "y"     : "768"
     },
     "testcases" : [
        ["1{undef=a}2{undef=b}3", "1a2b3"],
        ["0{undef}1{undef=a}2{undef}3{undef=b}4{undef}5", "01a2a3b4b5"]
     ]
  },
  "Empty strings within arrays and associative arrays" :
  {
    "variables": {
       "list"  : [ "val1", "", "val3" ],
       "keysA"  : {"key1": "", "key2": "val2"},
       "keysB"  : {"key1": "val1", "": "val2"}
     },
     "testcases" : [
        ["{list}", "val1,,val3"],
        ["{list*}", "val1,,val3"],
        ["{list+}", "list.val1,list.,list.val3"],
        ["{keysA}", "key1,,key2,val2"],
        ["{keysA*}", "key1,,key2,val2"],
        ["{keysA+}", "keysA.key1,,keysA.key2,val2"],
        ["{keysB}", ",val2,key1,val1"],
        ["{keysB*}", ",val2,key1,val1"],
        ["{keysB+}", "keysB.,val2,keysB.key1,val1"],
        ["{+list}", "val1,,val3"],
        ["{+list*}", "val1,,val3"],
        ["{+list+}", "list.val1,list.,list.val3"],
        ["{+keysA}", "key1,,key2,val2"],
        ["{+keysA*}", "key1,,key2,val2"],
        ["{+keysA+}", "keysA.key1,,keysA.key2,val2"],
        ["{+keysB}", ",val2,key1,val1"],
        ["{+keysB*}", ",val2,key1,val1"],
        ["{+keysB+}", "keysB.,val2,keysB.key1,val1"],
        ["{;list}", ";val1,,val3"],
        ["{;list*}", ";val1;;val3"],
        ["{;list+}", ";list=val1;list=;list=val3"],
        ["{;keysA}", ";key1,key2,val2"],
        ["{;keysA*}", ";key1;key2=val2"],
        ["{;keysA+}", ";keysA.key1;keysA.key2=val2"],
        ["{;keysB}", ";,val2,key1,val1"],
        ["{;keysB*}", ";=val2;key1=val1"],
        ["{;keysB+}", ";keysB.=val2;keysB.key1=val1"],
        ["{?list}", "?list=val1,,val3"],
        ["{?list*}", "?val1&&val3"],
        ["{?list+}", "?list=val1&list=&list=val3"],
        ["{?keysA}", "?keysA=key1,key2,val2"],
        ["{?keysA*}", "?key1&key2=val2"],
        ["{?keysA+}", "?keysA.key1&keysA.key2=val2"],
        ["{?keysB}", "?keysB=,val2,key1,val1"],
        ["{?keysB*}", "?=val2&key1=val1"],
        ["{?keysB+}", "?keysB.=val2&keysB.key1=val1"],
        ["{/list}", "/val1,,val3"],
        ["{/list*}", "/val1//val3"],
        ["{/list+}", "/list.val1/list./list.val3"],
        ["{/keysA}", "/key1,,key2,val2"],
        ["{/keysA*}", "/key1//key2/val2"],
        ["{/keysA+}", "/keysA.key1//keysA.key2/val2"],
        ["{/keysB}", "/,val2,key1,val1"],
        ["{/keysB*}", "//val2/key1/val1"],
        ["{/keysB+}", "/keysB./val2/keysB.key1/val1"],
        ["X{.list}", "X.val1,,val3"],
        ["X{.list*}", "X.val1..val3"],
        ["X{.list+}", "X.list.val1.list..list.val3"],
        ["X{.keysA}", "X.key1,,key2,val2"],
        ["X{.keysA*}", "X.key1..key2.val2"],
        ["X{.keysA+}", "X.keysA.key1..keysA.key2.val2"],
        ["X{.keysB}", "X.,val2,key1,val1"],
        ["X{.keysB*}", "X..val2.key1.val1"],
        ["X{.keysB+}", "X.keysB..val2.keysB.key1.val1"]
     ]
  }
}