[bun.js] Add `atob` and `btoa`

1 files changed, 78 insertions, 0 deletions

diff --git a/integration/bunjs-only-snippets/atob.test.js b/integration/bunjs-only-snippets/atob.test.js
new file mode 100644
index 000000000..c146aa855
--- /dev/null
+++ b/integration/bunjs-only-snippets/atob.test.js
@@ -0,0 +1,78 @@
+import { expect, describe, it } from "bun:test";
+
+function expectInvalidCharacters(val) {
+  try {
+    atob(val);
+    throw new Error("Expected error");
+  } catch (error) {
+    expect(error.message).toBe("The string contains invalid characters.");
+  }
+}
+
+it("atob", () => {
+  expect(atob("YQ==")).toBe("a");
+  expect(atob("YWI=")).toBe("ab");
+  expect(atob("YWJj")).toBe("abc");
+  expect(atob("YWJjZA==")).toBe("abcd");
+  expect(atob("YWJjZGU=")).toBe("abcde");
+  expect(atob("YWJjZGVm")).toBe("abcdef");
+  expect(atob("zzzz")).toBe("Ï<ó");
+  expect(atob("")).toBe("");
+  expect(atob(null)).toBe("žée");
+  expect(atob("6ek=")).toBe("éé");
+  expect(atob("6ek")).toBe("éé");
+  expect(atob("gIE=")).toBe("€");
+  expect(atob("zz")).toBe("Ï");
+  expect(atob("zzz")).toBe("Ï<");
+  expect(atob("zzz=")).toBe("Ï<");
+  expect(atob(" YQ==")).toBe("a");
+  expect(atob("YQ==\u000a")).toBe("a");
+
+  try {
+    atob();
+  } catch (error) {
+    expect(error.name).toBe("TypeError");
+  }
+  expectInvalidCharacters(undefined);
+  expectInvalidCharacters(" abcd===");
+  expectInvalidCharacters("abcd=== ");
+  expectInvalidCharacters("abcd ===");
+  expectInvalidCharacters("тест");
+  expectInvalidCharacters("z");
+  expectInvalidCharacters("zzz==");
+  expectInvalidCharacters("zzz===");
+  expectInvalidCharacters("zzz====");
+  expectInvalidCharacters("zzz=====");
+  expectInvalidCharacters("zzzzz");
+  expectInvalidCharacters("z=zz");
+  expectInvalidCharacters("=");
+  expectInvalidCharacters("==");
+  expectInvalidCharacters("===");
+  expectInvalidCharacters("====");
+
+  expectInvalidCharacters("=====");
+});
+
+it("btoa", () => {
+  expect(btoa("a")).toBe("YQ==");
+  expect(btoa("ab")).toBe("YWI=");
+  expect(btoa("abc")).toBe("YWJj");
+  expect(btoa("abcd")).toBe("YWJjZA==");
+  expect(btoa("abcde")).toBe("YWJjZGU=");
+  expect(btoa("abcdef")).toBe("YWJjZGVm");
+  expect(typeof btoa).toBe("function");
+  try {
+    btoa();
+    throw new Error("Expected error");
+  } catch (error) {
+    expect(error.name).toBe("TypeError");
+  }
+  var window = "[object Window]";
+  expect(btoa("")).toBe("");
+  expect(btoa(null)).toBe("bnVsbA==");
+  expect(btoa(undefined)).toBe("dW5kZWZpbmVk");
+  expect(btoa(window)).toBe("W29iamVjdCBXaW5kb3dd");
+  expect(btoa("éé")).toBe("6ek=");
+  expect(btoa("\u0080\u0081")).toBe("gIE=");
+  expect(btoa(Bun)).toBe(btoa("[object Bun]"));
+});