add #font method to Run

ts/docx/run/index.ts

@@ -1,4 +1,5 @@
 import {XmlComponent, Attributes} from "../xml-components";
+import { RunFonts } from "./run-fonts";
 import {RunProperties} from "./properties";
 import {Bold, Italics} from "./formatting";
 import {Tab} from "./tab";
@@ -11,7 +12,6 @@ import {Underline} from "./underline"
 export class Run extends XmlComponent {
     private properties: RunProperties;
 
-
     constructor() {
         super("w:r");
         this.properties = new RunProperties();
@@ -72,4 +72,9 @@ export class Run extends XmlComponent {
         this.properties.push(new SuperScript());
         return this;
     }
+
+    font(fontName: string): Run {
+        this.properties.push(new RunFonts(fontName));
+        return this;
+    }
 }

ts/tests/docx/run/runTest.ts

@@ -1,4 +1,4 @@
-import { assert } from "chai";
+import { assert, expect } from "chai";
 import { Run } from "../../../docx/run";
 import { TextRun } from "../../../docx/run/text-run";
 import { Formatter } from "../../../export/formatter";
@@ -85,4 +85,20 @@ describe("Run", () => {
             assert.equal(newJson.root[1].rootKey, "w:tab");
         });
     });
+
+    describe("#font()", () => {
+        it("should allow chaining calls", () => {
+            expect(run.font("Times")).to.equal(run);
+        });
+
+        it("should set the font as named", () => {
+            run.font("Times");
+            const tree = new Formatter().format(run);
+            expect(tree).to.deep.equal({
+                "w:r": [
+                    {"w:rPr": [{"w:rFonts": [{_attr: {"w:ascii": "Times", "w:hAnsi": "Times"}}]}]},
+                ],
+            });
+        });
+    });
 });