test: Add tests for references-empty-enum rule

Author: Ben McKernan

references-empty-enum.test.js

@@ -0,0 +1,59 @@
+const check = require("./references-empty-enum");
+
+it("succeeds when the commit has no type", () => {
+    const [actual] = check({ type: "" });
+    expect(actual).toBe(true);
+});
+
+it("succeeds when the type enum is empty", () => {
+    const [actual] = check({ type: "fix" }, "always", []);
+    expect(actual).toBe(true);
+});
+
+describe("when references is empty", () => {
+    const references = [];
+
+    test("a on 'always [a]' succeeds", () => {
+        const [actual] = check({ references, type: "a" }, "always", ["a"]);
+        expect(actual).toBe(true);
+    });
+
+    test("b on 'always [a]' succeeds", () => {
+        const [actual] = check({ references, type: "b" }, "always", ["a"]);
+        expect(actual).toBe(true);
+    });
+
+    test("a on 'never [a]' fails", () => {
+        const [actual] = check({ references, type: "a" }, "never", ["a"]);
+        expect(actual).toBe(false);
+    });
+
+    test("b on 'never [a]' succeeds", () => {
+        const [actual] = check({ references, type: "b" }, "never", ["a"]);
+        expect(actual).toBe(true);
+    });
+});
+
+describe("when references is not empty", () => {
+    const references = ["CMS-123"];
+
+    test("a on 'always [a]' fails", () => {
+        const [actual] = check({ references, type: "a" }, "always", ["a"]);
+        expect(actual).toBe(false);
+    });
+
+    test("b on 'always [a]' succeeds", () => {
+        const [actual] = check({ references, type: "b" }, "always", ["a"]);
+        expect(actual).toBe(true);
+    });
+
+    test("a on 'never [a]' succeeds", () => {
+        const [actual] = check({ references, type: "a" }, "never", ["a"]);
+        expect(actual).toBe(true);
+    });
+
+    test("b on 'never [a]' succeeds", () => {
+        const [actual] = check({ references, type: "b" }, "never", ["a"]);
+        expect(actual).toBe(true);
+    });
+});