feat: schema cover letter (#76)

src/io/tradetrust/cover-letter/1.0/context.test.ts

@@ -0,0 +1,45 @@
+import context from "./cover-letter-context.json";
+import sampleDocument from "./cover-letter-data.json";
+import { expand, JsonLdDocument } from "jsonld";
+
+const expandDocument = async (mergedDocument: JsonLdDocument) => {
+  return await expand(mergedDocument, {
+    expansionMap: function(info) {
+      if (info.unmappedProperty) {
+        throw new Error(
+          '"The property ' +
+            (info.activeProperty ? info.activeProperty + "." : "") +
+            info.unmappedProperty +
+            ' in the input was not defined in the context"'
+        );
+      }
+    }
+  });
+};
+
+describe("cover letter context", () => {
+  it("should work with valid cover letter", async () => {
+    const mergedDocument = {
+      "@context": context["@context"],
+      ...sampleDocument
+    } as JsonLdDocument;
+
+    expect(await expandDocument(mergedDocument)).toBeTruthy();
+  });
+
+  it("should throw error when property not defined in context", async () => {
+    const modifiedSampleDocument = {
+      ...sampleDocument,
+      invalidCoverLetterProperties: "Random String"
+    };
+
+    const mergedDocument = {
+      "@context": context["@context"],
+      ...modifiedSampleDocument
+    } as JsonLdDocument;
+
+    return expect(expandDocument(mergedDocument)).rejects.toThrowError(
+      "The property invalidCoverLetterProperties in the input was not defined in the context"
+    );
+  });
+});

src/io/tradetrust/cover-letter/1.0/cover-letter-context.json

@@ -0,0 +1,17 @@
+{
+  "@context": [
+    {
+      "@version": 1.1
+    },
+    "https://www.w3.org/ns/odrl.jsonld",
+    {
+      "name": "xsd:string",
+      "logo": "xsd:string",
+      "title": "xsd:string",
+      "remarks": "xsd:string",
+      "backgroundColor": "xsd:string",
+      "titleColor": "xsd:string",
+      "remarksColor": "xsd:string"
+    }
+  ]
+}