LibJS: Convert all remaining non-Array tests to the new system :)

Libraries/LibJS/Tests/operators/logical-nullish-coalescing.js

@@ -0,0 +1,50 @@
+test("booleans", () => {
+  expect(true ?? true).toBeTrue();
+  expect(false ?? false).toBeFalse();
+  expect(true ?? false).toBeTrue();
+  expect(false ?? true).toBeFalse();
+});
+
+test("strings", () => {
+  expect("" ?? "").toBe("");
+  expect("" ?? false).toBe("");
+  expect("" ?? true).toBe("");
+  expect(false ?? "").toBeFalse();
+  expect(true ?? "").toBeTrue();
+  expect("foo" ?? "bar").toBe("foo");
+  expect("foo" ?? false).toBe("foo");
+  expect("foo" ?? true).toBe("foo");
+  expect(false ?? "bar").toBeFalse();
+  expect(true ?? "bar").toBeTrue();
+});
+
+test("numbers", () => {
+  expect(false ?? 1 === 2).toBeFalse();
+  expect(true ?? 1 === 2).toBeTrue();
+  expect(0 ?? false).toBe(0);
+  expect(0 ?? true).toBe(0);
+  expect(42 ?? false).toBe(42);
+  expect(42 ?? true).toBe(42);
+  expect(false ?? 0).toBeFalse();
+  expect(true ?? 0).toBeTrue();
+  expect(false ?? 42).toBeFalse();
+  expect(true ?? 42).toBeTrue();
+});
+
+test("objects", () => {
+  expect([] ?? false).toHaveLength(0);
+  expect([] ?? true).toHaveLength(0);
+  expect(false ?? []).toBeFalse();
+  expect(true ?? []).toBeTrue();
+});
+
+test("null & undefined", () => {
+  expect(null ?? false).toBeFalse();
+  expect(null ?? true).toBeTrue();
+  expect(false ?? null).toBeFalse();
+  expect(true ?? null).toBeTrue();
+  expect(undefined ?? false).toBeFalse();
+  expect(undefined ?? true).toBeTrue();
+  expect(false ?? undefined).toBeFalse();
+  expect(true ?? undefined).toBeTrue();
+});