add support for floating drawings

- added need elements and test for them

src/file/drawing/floating/vertical-position.spec.ts

@@ -0,0 +1,41 @@
+import { assert } from "chai";
+
+import { VerticalPosition } from "./vertical-position";
+import { Utility } from "../../../tests/utility";
+import { VerticalPositionRelativeFrom, VerticalPositionAlign } from ".";
+
+describe("VerticalPosition", () => {
+    describe("#constructor()", () => {
+        it("should create a element with position align", () => {
+            const newJson = Utility.jsonify(
+                new VerticalPosition({
+                    relative: VerticalPositionRelativeFrom.MARGIN,
+                    align: VerticalPositionAlign.INSIDE,
+                }),
+            );
+            assert.equal(newJson.rootKey, "wp:positionV");
+            assert.include(newJson.root[0].root, {
+                relativeFrom: "margin",
+            });
+
+            assert.equal(newJson.root[1].rootKey, "wp:align");
+            assert.include(newJson.root[1].root, "inside");
+        });
+
+        it("should create a element with offset", () => {
+            const newJson = Utility.jsonify(
+                new VerticalPosition({
+                    relative: VerticalPositionRelativeFrom.MARGIN,
+                    offset: 40,
+                }),
+            );
+            assert.equal(newJson.rootKey, "wp:positionV");
+            assert.include(newJson.root[0].root, {
+                relativeFrom: "margin",
+            });
+
+            assert.equal(newJson.root[1].rootKey, "wp:posOffset");
+            assert.include(newJson.root[1].root[0], 40);
+        });
+    });
+});