tests: create custom tests from current tests cases

Signed-off-by: Petr Štetiar <ynezz@true.cz>

1 files changed, 52 insertions, 0 deletions

diff --git a/tests/custom/03_bugs/01_try_catch_stack_mismatch b/tests/custom/03_bugs/01_try_catch_stack_mismatch
new file mode 100644
index 0000000..f6e5a0a
--- /dev/null
+++ b/tests/custom/03_bugs/01_try_catch_stack_mismatch
@@ -0,0 +1,52 @@
+When compiling a try/catch statement with an exception variable, the catch
+skip jump incorrectly pointed to the POP instruction popping the exception
+variable off the stack, leading to a stack position mismatch between
+compiler and vm, causing local variables to yield wrong values at runtime.
+
+-- Expect stdout --
+1
+-- End --
+
+-- Testcase --
+{%
+	function f() {
+		let x;
+
+		try {
+			x = 1;
+		}
+		catch(e) {
+
+		}
+
+		// Before the fix, `x` incorrectly yielded the print function value
+		print(x, "\n");
+	}
+
+	f()
+%}
+-- End --
+
+
+When compiling a try/catch statement with local variable declearations
+within the try block, the catch skip jump incorrectly happened before the
+local try block variables were popped off the stack, leading to a stack
+position mismatch between compiler and vm, causing local variables to
+yield wrong values at runtime.
+
+-- Expect stdout --
+1
+-- End --
+
+-- Testcase --
+{%
+	try {
+		let a;
+	}
+	catch {}
+
+	let b = 1;
+
+	print(b, "\n");
+%}
+-- End --