Change docx folder to more appropriate "file" folder

src/file/table/grid.spec.ts

@@ -0,0 +1,38 @@
+import { expect } from "chai";
+
+import { Formatter } from "../../export/formatter";
+import { GridCol, TableGrid } from "./grid";
+
+describe("GridCol", () => {
+    describe("#constructor", () => {
+        it("sets the width attribute to the value given", () => {
+            const grid = new GridCol(1234);
+            const tree = new Formatter().format(grid);
+            expect(tree).to.deep.equal({
+                "w:gridCol": [{_attr: {"w:w": 1234}}],
+            });
+        });
+
+        it("does not set a width attribute if not given", () => {
+            const grid = new GridCol();
+            const tree = new Formatter().format(grid);
+            expect(tree).to.deep.equal({"w:gridCol": []});
+        });
+    });
+});
+
+describe("TableGrid", () => {
+    describe("#constructor", () => {
+        it("creates a column for each width given", () => {
+            const grid = new TableGrid([1234, 321, 123]);
+            const tree = new Formatter().format(grid);
+            expect(tree).to.deep.equal({
+                "w:tblGrid": [
+                    {"w:gridCol": [{_attr: {"w:w": 1234}}]},
+                    {"w:gridCol": [{_attr: {"w:w": 321}}]},
+                    {"w:gridCol": [{_attr: {"w:w": 123}}]},
+                ],
+            });
+        });
+    });
+});