1 files changed, 17 insertions, 0 deletions
diff --git a/Userland/Libraries/LibJS/Tests/builtins/String/String.fromCharCode.js b/Userland/Libraries/LibJS/Tests/builtins/String/String.fromCharCode.js
new file mode 100644
index 0000000000..c6b52fd2e1
--- /dev/null
+++ b/Userland/Libraries/LibJS/Tests/builtins/String/String.fromCharCode.js
@@ -0,0 +1,17 @@
+test("basic functionality", () => {
+    expect(String.fromCharCode).toHaveLength(1);
+
+    expect(String.fromCharCode()).toBe("");
+    expect(String.fromCharCode(0)).toBe("\u0000");
+    expect(String.fromCharCode(false)).toBe("\u0000");
+    expect(String.fromCharCode(null)).toBe("\u0000");
+    expect(String.fromCharCode(undefined)).toBe("\u0000");
+    expect(String.fromCharCode(1)).toBe("\u0001");
+    expect(String.fromCharCode(true)).toBe("\u0001");
+    expect(String.fromCharCode(-1)).toBe("\uffff");
+    expect(String.fromCharCode(0xffff)).toBe("\uffff");
+    expect(String.fromCharCode(0x123ffff)).toBe("\uffff");
+    expect(String.fromCharCode(65)).toBe("A");
+    expect(String.fromCharCode(65, 66, 67)).toBe("ABC");
+    expect(String.fromCharCode(228, 246, 252)).toBe("äöü");
+});