added Spacing for paragraphs and ParagraphStyle

ts/tests/docx/paragraph/paragraphTests.ts

@@ -188,4 +188,21 @@ describe("Paragraph", () => {
             })
         });
     });
+
+    describe("#spacing", () => {
+        it("should set the paragraph spacing to the given values", () => {
+            paragraph.spacing({before: 90, line: 50});
+            const tree = new Formatter().format(paragraph);
+            expect(tree).to.deep.equal({
+                "w:p": [
+                    {
+                        "w:pPr": [
+                            {"_attr": {}},
+                            {"w:spacing": [{"_attr": {"w:before": 90, "w:line": 50}}]},
+                        ],
+                    },
+                ]
+            })
+        });
+    });
 });

ts/tests/docx/paragraph/spacingTest.ts

@@ -0,0 +1,24 @@
+import { expect } from "chai";
+
+import { Spacing } from "../../../docx/paragraph/spacing";
+import { Formatter } from "../../../export/formatter";
+
+describe("Spacing", () => {
+    describe("#constructor", () => {
+        it("should set the properties given", () => {
+            const spacing = new Spacing({before: 100, after: 120, line: 150});
+            const tree = new Formatter().format(spacing);
+            expect(tree).to.deep.equal({
+                "w:spacing": [{_attr: {"w:after": 120, "w:before": 100, "w:line": 150}}],
+            });
+        });
+
+        it("should only set the given properties", () => {
+            const spacing = new Spacing({before: 100});
+            const tree = new Formatter().format(spacing);
+            expect(tree).to.deep.equal({
+                "w:spacing": [{_attr: {"w:before": 100}}],
+            });
+        });
+    });
+});

ts/tests/stylesTest.ts

@@ -171,6 +171,22 @@ describe("ParagraphStyle", () => {
                 ],
             });
         });
+
+        it("#spacing", () => {
+            const style = new ParagraphStyle("myStyleId")
+                .spacing({before: 50, after: 150});
+            const tree = new Formatter().format(style);
+            expect(tree).to.deep.equal({
+                "w:style": [
+                    {_attr: {"w:type": "paragraph", "w:styleId": "myStyleId"}},
+                    {"w:pPr": [
+                        {_attr: {}},
+                        {"w:spacing": [{_attr: {"w:before": 50, "w:after": 150}}]},
+                    ]},
+                    {"w:rPr": []},
+                ],
+            });
+        });
     });
 
     describe("formatting methods: run properties", () => {