1 files changed, 19 insertions, 0 deletions
diff --git a/tests/features/test_implicit_fstring.zc b/tests/features/test_implicit_fstring.zc
new file mode 100644
index 0000000..85a6c86
--- /dev/null
+++ b/tests/features/test_implicit_fstring.zc
@@ -0,0 +1,19 @@
+
+test "implicit_fstring_interpolation" {
+    let result = 123;
+    let s = "{result}";
+    // Should be "123"
+    assert(strcmp(s, "123") == 0, "Implicit f-string failed");
+}
+
+test "implicit_fstring_complex" {
+    let a = 10;
+    let b = 20;
+    let s = "Sum: {a + b}";
+    assert(strcmp(s, "Sum: 30") == 0, "Complex implicit f-string failed");
+}
+
+test "no_interpolation" {
+    let s = "Hello World";
+    assert(strcmp(s, "Hello World") == 0, "Plain string failed");
+}