*

coding_interviews/frontend/js-coding-questions/testing-framework/testing-framework.js

@@ -0,0 +1,45 @@
+function describe(testSuiteName, func) {
+  console.log(`beginning test suite ${testSuiteName}`);
+  try {
+    func();
+    console.log(`successfully completed test suite ${testSuiteName}`);
+  } catch ({ testCaseName, errorMessage }) {
+    console.error(
+      `failed running test suite ${testSuiteName} on test case ${testCaseName} with error message ${errorMessage}`
+    );
+  }
+}
+
+function it(testCaseName, func) {
+  console.log(`beginning test case ${testCaseName}`);
+  try {
+    func();
+    console.log(`successfully completed test case ${testCaseName}`);
+  } catch (errorMessage) {
+    throw { testCaseName, errorMessage };
+  }
+}
+
+function expect(actual) {
+  return {
+    toExist: () => {
+      if (actual === null || actual === undefined) {
+        throw `expected value to exist but got ${actual}`;
+      }
+    },
+    toBe: (expected) => {
+      if (actual !== expected) {
+        throw `expected ${JSON.stringify(actual)} to be ${JSON.stringify(
+          expected
+        )}`;
+      }
+    },
+    toBeType: (type) => {
+      if (typeof actual !== type) {
+        throw `expected ${JSON.stringify(
+          actual
+        )} to be of type ${type} but got ${typeof actual}`;
+      }
+    },
+  };
+}