Additional filter and array slice selector tests (#103)

Author: gongfarmer

tests/basic.json

@@ -920,6 +920,16 @@
       "name": "bald descendant segment",
       "selector": "$..",
       "invalid_selector": true
+    },
+    {
+      "name": "current node identifier without filter selector",
+      "selector": "$[@.a]",
+      "invalid_selector": true
+    },
+    {
+      "name": "root node identifier in brackets without filter selector",
+      "selector": "$[$.a]",
+      "invalid_selector": true
     }
   ]
-}
+}

tests/filter.json

@@ -403,6 +403,21 @@
         "$[4]"
       ]
     },
+    {
+      "name": "equals, absent from index selector equals absent from name selector",
+      "selector": "$[[email protected][email protected][9]]",
+      "document": [
+        {
+          "list": [1]
+        }
+      ],
+      "result": [
+        { "list": [1] }
+      ],
+      "result_paths": [
+        "$[0]"
+      ]
+    },
     {
       "name": "deep equality, arrays",
       "selector": "$[[email protected][email protected]]",

tests/slice_selector.json

@@ -572,6 +572,35 @@
         "slice"
       ]
     },
+    {
+      "name": "negative from, negative to, positive step",
+      "selector": "$[-5:-2]",
+      "document": [
+        0,
+        1,
+        2,
+        3,
+        4,
+        5,
+        6,
+        7,
+        8,
+        9
+      ],
+      "result": [
+        5,
+        6,
+        7
+      ],
+      "result_paths": [
+        "$[5]",
+        "$[6]",
+        "$[7]"
+      ],
+      "tags": [
+        "slice"
+      ]
+    },
     {
       "name": "too many colons",
       "selector": "$[1:2:3:4]",