Add test case 0028

Test use native types flag with non-native values.

Author: niklasl

tests/fromRdf-manifest.jsonld

@@ -205,6 +205,16 @@
       },
       "input": "fromRdf/0027-in.nq",
       "expect": "fromRdf/0027-out.jsonld"
+    }, {
+      "@id": "#t0028",
+      "@type": ["jld:PositiveEvaluationTest", "jld:FromRDFTest"],
+      "name": "use native types flag with non-native values",
+      "purpose": "Ensure that useNativeTypes flag being true does not interfere with values that cannot be serialized into a native value.",
+      "option": {
+        "useNativeTypes": true
+      },
+      "input": "fromRdf/0028-in.nq",
+      "expect": "fromRdf/0028-out.jsonld"
     }, {
       "@id": "#tdi01",
       "@type": [ "jld:PositiveEvaluationTest", "jld:FromRDFTest" ],

tests/fromRdf/0028-in.nq

@@ -0,0 +1,5 @@
+<http://example.com> <http://example.com/property> "string" .
+<http://example.com> <http://example.com/property> "hello"@en .
+<http://example.com> <http://example.com/property> "No"^^<http://www.w3.org/2001/XMLSchema#boolean> .
+<http://example.com> <http://example.com/property> "AAA"^^<http://www.w3.org/2001/XMLSchema#double> .
+<http://example.com> <http://example.com/property> "{\"x\": 1}"^^<http://www.w3.org/1999/02/22-rdf-syntax-ns#JSON> .

tests/fromRdf/0028-out.jsonld

@@ -0,0 +1,28 @@
+[
+  {
+    "@id": "http://example.com",
+    "http://example.com/property": [
+      {
+        "@value": "AAA",
+        "@type": "http://www.w3.org/2001/XMLSchema#double"
+      },
+      {
+        "@value": {
+          "x": 1
+        },
+        "@type": "@json"
+      },
+      {
+        "@value": "No",
+        "@type": "http://www.w3.org/2001/XMLSchema#boolean"
+      },
+      {
+        "@value": "string"
+      },
+      {
+        "@language": "en",
+        "@value": "hello"
+      }
+    ]
+  }
+]