Add JSON literal tests.

- Various tests of when `@type` of `@json` is used, the JSON may be an
  array, and the interaction with a `@container` of `@set` and `@list`.
- Change compaction output for `@json` and `@set` with a JSON array.
- Add test for many other possibilities and processing algorithms.
- Propose new `multiple JSON literals` error code when trying to add
  multiple JSON literals as values for a property.

tests/compact-manifest.jsonld

@@ -1398,6 +1398,15 @@
       "input": "compact/ep15-in.jsonld",
       "context": "compact/ep15-context.jsonld",
       "expectErrorCode": "invalid container mapping"
+    }, {
+      "@id": "#tej01",
+      "@type": ["jld:NegativeEvaluationTest", "jld:CompactTest"],
+      "name": "Multiple JSON values for a JSON literal properties",
+      "purpose": "Tests compacting multiple JSON values for a JSON literal property.",
+      "input": "compact/ej01-in.jsonld",
+      "context": "compact/ej01-context.jsonld",
+      "expectErrorCode": "multiple JSON literals",
+      "option": {"specVersion": "json-ld-1.1"}
     }, {
       "@id": "#tin01",
       "@type": ["jld:PositiveEvaluationTest", "jld:CompactTest"],
@@ -1542,6 +1551,51 @@
       "context": "compact/js11-context.jsonld",
       "expect": "compact/js11-out.jsonld",
       "option": {"specVersion": "json-ld-1.1"}
+    }, {
+      "@id": "#tjs12",
+      "@type": ["jld:PositiveEvaluationTest", "jld:CompactTest"],
+      "name": "Compact JSON literal (empty array)",
+      "purpose": "Tests compacting property with @type @json to a JSON literal (empty array).",
+      "input": "compact/js12-in.jsonld",
+      "context": "compact/js12-context.jsonld",
+      "expect": "compact/js12-out.jsonld",
+      "option": {"specVersion": "json-ld-1.1"}
+    }, {
+      "@id": "#tjs13",
+      "@type": ["jld:PositiveEvaluationTest", "jld:CompactTest"],
+      "name": "Compact JSON literal (array with string)",
+      "purpose": "Tests compacting property with @type @json to a JSON literal (array with string).",
+      "input": "compact/js13-in.jsonld",
+      "context": "compact/js13-context.jsonld",
+      "expect": "compact/js13-out.jsonld",
+      "option": {"specVersion": "json-ld-1.1"}
+    }, {
+      "@id": "#tjs14",
+      "@type": ["jld:PositiveEvaluationTest", "jld:CompactTest"],
+      "name": "Compact JSON literal and non-JSON with @json property",
+      "purpose": "Tests compacting property with @type @json with JSON literal and non-JSON.",
+      "input": "compact/js14-in.jsonld",
+      "context": "compact/js14-context.jsonld",
+      "expect": "compact/js14-out.jsonld",
+      "option": {"specVersion": "json-ld-1.1"}
+    }, {
+      "@id": "#tjs15",
+      "@type": ["jld:PositiveEvaluationTest", "jld:CompactTest"],
+      "name": "Compact JSON literal and non-JSON without @json property",
+      "purpose": "Tests compacting property without @type @json with JSON literal and non-JSON.",
+      "input": "compact/js15-in.jsonld",
+      "context": "compact/js15-context.jsonld",
+      "expect": "compact/js15-out.jsonld",
+      "option": {"specVersion": "json-ld-1.1"}
+    }, {
+      "@id": "#tjs16",
+      "@type": ["jld:PositiveEvaluationTest", "jld:CompactTest"],
+      "name": "Compact JSON literal and non-JSON with and without @json property",
+      "purpose": "Tests compacting property with and without @type @json with JSON literal and non-JSON.",
+      "input": "compact/js16-in.jsonld",
+      "context": "compact/js16-context.jsonld",
+      "expect": "compact/js16-out.jsonld",
+      "option": {"specVersion": "json-ld-1.1"}
     }, {
       "@id": "#tla01",
       "@type": ["jld:PositiveEvaluationTest", "jld:CompactTest"],

tests/compact/ej01-context.jsonld

@@ -0,0 +1,6 @@
+{
+  "@context": {
+    "@version": 1.1,
+    "e": {"@id": "http://example.org/vocab#value", "@type": "@json"}
+  }
+}

tests/compact/ej01-in.jsonld

@@ -0,0 +1,9 @@
+[{
+  "http://example.org/vocab#value": [{
+    "@value": ["JSON1"],
+    "@type": "@json"
+  }, {
+    "@value": ["JSON2"],
+    "@type": "@json"
+  }]
+}]

tests/compact/js07-out.jsonld

@@ -3,5 +3,5 @@
     "@version": 1.1,
     "e": {"@id": "http://example.org/vocab#array", "@type": "@json", "@container": "@set"}
   },
-  "e": [{"foo": "bar"}]
-}
+  "e": [[{"foo": "bar"}]]
+}

tests/compact/js12-context.jsonld

@@ -0,0 +1,6 @@
+{
+  "@context": {
+    "@version": 1.1,
+    "e": {"@id": "http://example.org/vocab#value", "@type": "@json"}
+  }
+}

tests/compact/js12-in.jsonld

@@ -0,0 +1,6 @@
+[{
+  "http://example.org/vocab#value": [{
+    "@value": ["string"],
+    "@type": "@json"
+  }]
+}]

tests/compact/js12-out.jsonld

@@ -0,0 +1,7 @@
+{
+  "@context": {
+    "@version": 1.1,
+    "e": {"@id": "http://example.org/vocab#value", "@type": "@json"}
+  },
+  "e": ["string"]
+}

tests/compact/js13-context.jsonld

@@ -0,0 +1,6 @@
+{
+  "@context": {
+    "@version": 1.1,
+    "e": {"@id": "http://example.org/vocab#value", "@type": "@json"}
+  }
+}

tests/compact/js13-in.jsonld

@@ -0,0 +1,6 @@
+[{
+  "http://example.org/vocab#value": [{
+    "@value": [],
+    "@type": "@json"
+  }]
+}]

tests/compact/js13-out.jsonld

@@ -0,0 +1,7 @@
+{
+  "@context": {
+    "@version": 1.1,
+    "e": {"@id": "http://example.org/vocab#value", "@type": "@json"}
+  },
+  "e": []
+}

tests/compact/js14-context.jsonld

@@ -0,0 +1,6 @@
+{
+  "@context": {
+    "@version": 1.1,
+    "e": {"@id": "http://example.org/vocab#value", "@type": "@json"}
+  }
+}

tests/compact/js14-in.jsonld

@@ -0,0 +1,8 @@
+[{
+  "http://example.org/vocab#value": [{
+    "@value": [],
+    "@type": "@json"
+  },
+  "non-JSON"
+  ]
+}]

tests/compact/js14-out.jsonld

@@ -0,0 +1,8 @@
+{
+  "@context": {
+    "@version": 1.1,
+    "e": {"@id": "http://example.org/vocab#value", "@type": "@json"}
+  },
+  "e": [],
+  "http://example.org/vocab#value": "non-JSON"
+}

tests/compact/js15-context.jsonld

@@ -0,0 +1,6 @@
+{
+  "@context": {
+    "@version": 1.1,
+    "e": {"@id": "http://example.org/vocab#value"}
+  }
+}

tests/compact/js15-in.jsonld

@@ -0,0 +1,8 @@
+[{
+  "http://example.org/vocab#value": [{
+    "@value": [],
+    "@type": "@json"
+  },
+  "non-JSON"
+  ]
+}]

tests/compact/js15-out.jsonld

@@ -0,0 +1,13 @@
+{
+  "@context": {
+    "@version": 1.1,
+    "e": {"@id": "http://example.org/vocab#value"}
+  },
+  "e": [
+    {
+      "@type": "@json",
+      "@value": []
+    },
+    "non-JSON"
+  ]
+}

tests/compact/js16-context.jsonld

@@ -0,0 +1,7 @@
+{
+  "@context": {
+    "@version": 1.1,
+    "e-json": {"@id": "http://example.org/vocab#value", "@type": "@json"},
+    "e-non-json": {"@id": "http://example.org/vocab#value"}
+  }
+}

tests/compact/js16-in.jsonld

@@ -0,0 +1,8 @@
+[{
+  "http://example.org/vocab#value": [{
+    "@value": [],
+    "@type": "@json"
+  },
+  "non-JSON"
+  ]
+}]

tests/compact/js16-out.jsonld

@@ -0,0 +1,9 @@
+{
+  "@context": {
+    "@version": 1.1,
+    "e-json": {"@id": "http://example.org/vocab#value", "@type": "@json"},
+    "e-non-json": {"@id": "http://example.org/vocab#value"}
+  },
+  "e-json": [],
+  "e-non-json": "non-JSON"
+}

tests/expand-manifest.jsonld

@@ -1811,6 +1811,20 @@
       "purpose": "The value of @type in an expanded term definition object MUST be a string or null.",
       "input": "expand/er55-in.jsonld",
       "expectErrorCode": "invalid type mapping"
+    }, {
+      "@id": "#ter56",
+      "@type": ["jld:NegativeEvaluationTest", "jld:ExpandTest"],
+      "name": "Array not found for @json @set.",
+      "purpose": "The value for a @json @set term MUST be an array.",
+      "input": "expand/er56-in.jsonld",
+      "expectErrorCode": "invalid set or list object"
+    }, {
+      "@id": "#ter57",
+      "@type": ["jld:NegativeEvaluationTest", "jld:ExpandTest"],
+      "name": "Array not found for @json @list.",
+      "purpose": "The value for a @json @list term MUST be an array.",
+      "input": "expand/er57-in.jsonld",
+      "expectErrorCode": "invalid set or list object"
     }, {
       "@id": "#tes01",
       "@type": ["jld:NegativeEvaluationTest", "jld:ExpandTest"],
@@ -2083,6 +2097,62 @@
       "input": "expand/js23-in.jsonld",
       "expect": "expand/js23-out.jsonld",
       "option": {"specVersion": "json-ld-1.1"}
+    }, {
+      "@id": "#tjs24",
+      "@type": ["jld:PositiveEvaluationTest", "jld:ExpandTest"],
+      "name": "Expand JSON literal (one JSON literal).",
+      "purpose": "Tests expanding property with @type @json (one JSON literal).",
+      "input": "expand/js24-in.jsonld",
+      "expect": "expand/js24-out.jsonld",
+      "option": {"specVersion": "json-ld-1.1"}
+    }, {
+      "@id": "#tjs25",
+      "@type": ["jld:PositiveEvaluationTest", "jld:ExpandTest"],
+      "name": "Expand JSON literal (two JSON literals).",
+      "purpose": "Tests expanding property with @type @json (two JSON literals).",
+      "input": "expand/js25-in.jsonld",
+      "expect": "expand/js25-out.jsonld",
+      "option": {"specVersion": "json-ld-1.1"}
+    }, {
+      "@id": "#tjs26",
+      "@type": ["jld:PositiveEvaluationTest", "jld:ExpandTest"],
+      "name": "Expand JSON literal (JSON literal and non-JSON).",
+      "purpose": "Tests expanding property with @type @json (JSON literal and non-JSON).",
+      "input": "expand/js26-in.jsonld",
+      "expect": "expand/js26-out.jsonld",
+      "option": {"specVersion": "json-ld-1.1"}
+    }, {
+      "@id": "#tjs27",
+      "@type": ["jld:PositiveEvaluationTest", "jld:ExpandTest"],
+      "name": "Expand JSON literal (duplicate JSON literals).",
+      "purpose": "Tests expanding property with @type @json (dupcliate JSON literals).",
+      "input": "expand/js27-in.jsonld",
+      "expect": "expand/js27-out.jsonld",
+      "option": {"specVersion": "json-ld-1.1"}
+    }, {
+      "@id": "#tjs28",
+      "@type": ["jld:PositiveEvaluationTest", "jld:ExpandTest"],
+      "name": "Expand array-like value with @json and no @set/@list in @context.",
+      "purpose": "Tests expanding array-like value with @json and no @set/@list in @context.",
+      "input": "expand/js28-in.jsonld",
+      "expect": "expand/js28-out.jsonld",
+      "option": {"specVersion": "json-ld-1.1"}
+    }, {
+      "@id": "#tjs29",
+      "@type": ["jld:PositiveEvaluationTest", "jld:ExpandTest"],
+      "name": "Expand array-like value with @json and @set in @context.",
+      "purpose": "Tests expanding array-like value with @json and @set in @context.",
+      "input": "expand/js29-in.jsonld",
+      "expect": "expand/js29-out.jsonld",
+      "option": {"specVersion": "json-ld-1.1"}
+    }, {
+      "@id": "#tjs30",
+      "@type": ["jld:PositiveEvaluationTest", "jld:ExpandTest"],
+      "name": "Expand array-like value with @json and @list in @context.",
+      "purpose": "Tests expanding array-like value with @json and @list in @context.",
+      "input": "expand/js30-in.jsonld",
+      "expect": "expand/js30-out.jsonld",
+      "option": {"specVersion": "json-ld-1.1"}
     }, {
       "@id": "#tl001",
       "@type": ["jld:PositiveEvaluationTest", "jld:ExpandTest"],

tests/expand/er56-in.jsonld

@@ -0,0 +1,10 @@
+{
+  "@context": {
+    "prop": {
+      "@id": "ex:prop", 
+      "@type": "@json",
+      "@container": "@set"
+    }
+  },
+  "prop": "value"
+}

tests/expand/er57-in.jsonld

@@ -0,0 +1,10 @@
+{
+  "@context": {
+    "prop": {
+      "@id": "ex:prop", 
+      "@type": "@json",
+      "@container": "@list"
+    }
+  },
+  "prop": "value"
+}

tests/expand/js24-in.jsonld

@@ -0,0 +1,3 @@
+{
+  "http://example.org/vocab#null": {"@value": ["JSON"], "@type": "@json"}
+}

tests/expand/js24-out.jsonld

@@ -0,0 +1,8 @@
+[{
+  "http://example.org/vocab#null": [{
+    "@type": "@json",
+    "@value": [
+      "JSON"
+    ]
+  }]
+}]

tests/expand/js25-in.jsonld

@@ -0,0 +1,6 @@
+{
+  "http://example.org/vocab#value": [
+    {"@value": ["JSON1"], "@type": "@json"},
+    {"@value": ["JSON2"], "@type": "@json"}
+  ]
+}

tests/expand/js25-out.jsonld

@@ -0,0 +1,13 @@
+[{
+  "http://example.org/vocab#value": [{
+    "@type": "@json",
+    "@value": [
+      "JSON1"
+    ]
+  }, {
+    "@type": "@json",
+    "@value": [
+      "JSON2"
+    ]
+  }]
+}]

tests/expand/js26-in.jsonld

@@ -0,0 +1,6 @@
+{
+  "http://example.org/vocab#value": [
+    {"@value": ["JSON"], "@type": "@json"},
+    {"@value": "non-JSON"}
+  ]
+}

tests/expand/js26-out.jsonld

@@ -0,0 +1,10 @@
+[{
+  "http://example.org/vocab#value": [{
+    "@type": "@json",
+    "@value": [
+      "JSON"
+    ]
+  }, {
+    "@value": "non-JSON"
+  }]
+}]

tests/expand/js27-in.jsonld

@@ -0,0 +1,6 @@
+{
+  "http://example.org/vocab#value": [
+    {"@value": ["dup"], "@type": "@json"},
+    {"@value": ["dup"], "@type": "@json"}
+  ]
+}

tests/expand/js27-out.jsonld

@@ -0,0 +1,13 @@
+[{
+  "http://example.org/vocab#value": [{
+    "@type": "@json",
+    "@value": [
+      "dup"
+    ]
+  }, {
+    "@type": "@json",
+    "@value": [
+      "dup"
+    ]
+  }]
+}]