More math components

src/file/paragraph/math/brackets/math-beginning-character.spec.ts

@@ -0,0 +1,22 @@
+import { expect } from "chai";
+
+import { Formatter } from "export/formatter";
+
+import { MathBeginningCharacter } from "./math-beginning-character";
+
+describe("MathBeginningCharacter", () => {
+    describe("#constructor()", () => {
+        it("should create a MathBeginningCharacter with correct root key", () => {
+            const mathBeginningCharacter = new MathBeginningCharacter("[");
+
+            const tree = new Formatter().format(mathBeginningCharacter);
+            expect(tree).to.deep.equal({
+                "m:begChr": {
+                    _attr: {
+                        "m:val": "[",
+                    },
+                },
+            });
+        });
+    });
+});