zig

commit 2e99c3042e2641dda21768a898905784aa939031 (tree)
parent 2479966df2ab1c375ec48be025cb265b6887ded5
Author: Justus Klausecker <justus@klausecker.de>
Date:   Sat, 10 Jan 2026 15:38:31 +0100

test: add some more switch regression tests

switch evaluation order, switch lazy value resolution

Diffstat:
M
test/behavior/switch.zig
 | 
32
++++++++++++++++++++++++++++++++

1 file changed, 32 insertions(+), 0 deletions(-)
diff --git a/test/behavior/switch.zig b/test/behavior/switch.zig
@@ -1276,3 +1276,35 @@ test "switch with advanced prong items" {
     try S.doTheTest();
     try comptime S.doTheTest();
 }
+
+test "switch evaluation order" {
+    const eval = comptime eval: {
+        var eval = false;
+        const eu: anyerror!u32 = 0;
+        _ = eu catch |err| switch (err) {
+            blk: {
+                eval = true;
+                break :blk error.MyError;
+            } => {},
+            else => unreachable,
+        };
+        break :eval eval;
+    };
+    try comptime expect(!eval);
+}
+
+test "switch resolves lazy values correctly" {
+    const S = extern struct {
+        a: u16,
+        b: i16,
+    };
+    const ok1 = switch (@sizeOf(S)) {
+        4 => true,
+        else => false,
+    };
+    const ok2 = switch (@sizeOf(S)) {
+        4 => true,
+        else => false,
+    };
+    try comptime expect(ok1 == ok2);
+}