Sync with latest compliance tests

Author: jamesls

tests/compliance/filters.json

@@ -321,15 +321,15 @@
     "cases": [
       {
         "comment": "Filter with or expression",
-        "expression": "foo[?name == `a` || name == `b`]",
+        "expression": "foo[?name == 'a' || name == 'b']",
         "result": [{"name": "a"}, {"name": "b"}]
       },
       {
-        "expression": "foo[?name == `a` || name == `e`]",
+        "expression": "foo[?name == 'a' || name == 'e']",
         "result": [{"name": "a"}]
       },
       {
-        "expression": "foo[?name == `a` || name == `b` || name == `c`]",
+        "expression": "foo[?name == 'a' || name == 'b' || name == 'c']",
         "result": [{"name": "a"}, {"name": "b"}, {"name": "c"}]
       }
     ]

tests/compliance/functions.json

@@ -175,6 +175,10 @@
       "expression": "length('abc')",
       "result": 3
     },
+    {
+      "expression": "length('✓foo')",
+      "result": 4
+    },
     {
       "expression": "length('')",
       "result": 0

tests/compliance/slice.json

@@ -125,6 +125,10 @@
     {
       "expression": "foo[8:2&]",
       "error": "syntax"
+    },
+    {
+      "expression": "foo[2:a:3]",
+      "error": "syntax"
     }
   ]
 }, {

tests/compliance/syntax.json

@@ -84,6 +84,10 @@
         "expression": "(",
         "error": "syntax"
       },
+      {
+        "expression": "((&",
+        "error": "syntax"
+      },
       {
         "expression": "a[",
         "error": "syntax"
@@ -95,6 +99,20 @@
       {
         "expression": "a][",
         "error": "syntax"
+      },
+      {
+        "expression": "!",
+        "error": "syntax"
+      }
+    ]
+  },
+  {
+    "comment": "Boolean syntax errors",
+    "given": {"type": "object"},
+    "cases": [
+      {
+        "expression": "![!(!",
+        "error": "syntax"
       }
     ]
   },