Add shading

src/file/table/shading/shading.spec.ts

@@ -0,0 +1,37 @@
+import { expect } from "chai";
+
+import { Formatter } from "export/formatter";
+
+import { ShadingType, TableShading } from "./shading";
+
+describe("TableShading", () => {
+    describe("#constructor", () => {
+        it("should create", () => {
+            const cellMargain = new TableShading({});
+            const tree = new Formatter().format(cellMargain);
+            expect(tree).to.deep.equal({
+                "w:shd": [
+                    {
+                        _attr: {},
+                    },
+                ],
+            });
+        });
+
+        it("should create with params", () => {
+            const cellMargain = new TableShading({ val: ShadingType.PERCENT_40, color: "FF0000", fill: "555555" });
+            const tree = new Formatter().format(cellMargain);
+            expect(tree).to.deep.equal({
+                "w:shd": [
+                    {
+                        _attr: {
+                            "w:color": "FF0000",
+                            "w:fill": "555555",
+                            "w:val": "pct40",
+                        },
+                    },
+                ],
+            });
+        });
+    });
+});