Add test for literal property type (#185)

Author: ShukantPal

language/language-parser/src/transformer/symbol-to-doc.js

@@ -295,8 +295,8 @@ export default function symbolToDoc(symbol: Symbol): ?Doc {
 
 // Infer everything we can from the metadata
 function infer(doc: any, meta: SymbolSignature) {
-  doc.params = mergeParams(doc.params ?? [], meta.params);
-  doc.returns = mergeReturns(doc.returns ?? [], meta.returns);
+  doc.params = mergeParams(doc.params, meta.params) ?? [];
+  doc.returns = mergeReturns(doc.returns, meta.returns) ?? [];
   doc.extends = doc.extends || meta.extends || [];
   doc.implements = doc.implements || meta.implements || [];
   doc.typeParameters = doc.typeParameters || meta.typeParameters || [];

language/language-parser/test/parse-ts.js

@@ -314,7 +314,7 @@ describe("@webdoc/parser.parse (Typescript)", function() {
     expect(childClass.members.filter(div)[0].overrides).to.not.equal(undefined);
   });
 
-  it.only("should cast property to @method properly", async () => {
+  it("should cast property to @method properly", async function() {
     await parse([{
       content: `
         /** DO */
@@ -336,4 +336,22 @@ describe("@webdoc/parser.parse (Typescript)", function() {
       path: "*.ts",
     }]);
   });
+
+  it("can model literal data types", async function() {
+    await parse([
+      {
+        content: `
+          class Graph {}
+        
+          class Tree extends Graph {
+            /** True */
+            public empty: true;
+          }
+          
+          class TestTree extends Tree {}
+        `,
+        path: "*.ts",
+      },
+    ]);
+  });
 });