From 4696cd3e09c4e33519dbb53a41c32bbdfd97f6f6 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Tue, 14 Jul 2020 14:38:40 -0700
Subject: fix ability to call methods on enums with pointer-to-self

closes #3218
---
 test/stage1/behavior/enum.zig  | 19 +++++++++++++++++++
 test/stage1/behavior/union.zig | 21 +++++++++++++++++++++
 2 files changed, 40 insertions(+)

(limited to 'test')

diff --git a/test/stage1/behavior/enum.zig b/test/stage1/behavior/enum.zig
index 765828f5ce..b9bb1db533 100644
--- a/test/stage1/behavior/enum.zig
+++ b/test/stage1/behavior/enum.zig
@@ -1140,3 +1140,22 @@ test "tagName on enum literals" {
     expect(mem.eql(u8, @tagName(.FooBar), "FooBar"));
     comptime expect(mem.eql(u8, @tagName(.FooBar), "FooBar"));
 }
+
+test "method call on an enum" {
+    const S = struct {
+        const E = enum {
+            one,
+            two,
+
+            fn method(self: *E) bool {
+                return self.* == .two;
+            }
+        };
+        fn doTheTest() void {
+            var e = E.two;
+            expect(e.method());
+        }
+    };
+    S.doTheTest();
+    comptime S.doTheTest();
+}
diff --git a/test/stage1/behavior/union.zig b/test/stage1/behavior/union.zig
index da898347b9..cf3412eb5b 100644
--- a/test/stage1/behavior/union.zig
+++ b/test/stage1/behavior/union.zig
@@ -669,3 +669,24 @@ test "cast from anonymous struct to union" {
     S.doTheTest();
     comptime S.doTheTest();
 }
+
+test "method call on an empty union" {
+    const S = struct {
+        const MyUnion = union(Tag) {
+            pub const Tag = enum { X1, X2 };
+            X1: [0]u8,
+            X2: [0]u8,
+
+            pub fn useIt(self: *@This()) bool {
+                return true;
+            }
+        };
+
+        fn doTheTest() void {
+            var u = MyUnion{ .X1 = [0]u8{} };
+            expect(u.useIt());
+        }
+    };
+    S.doTheTest();
+    comptime S.doTheTest();
+}
-- 
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