Fix deserializer tests

src/util/serialize.zig

@@ -407,7 +407,8 @@ test "Deserializer" {
     {
         const T = struct { foo: []const u8, bar: bool };
 
-        var ds = Deserializer(T){};
+        var ds = Deserializer(T){ .arena = std.heap.ArenaAllocator.init(std.testing.allocator) };
+        defer ds.deinit();
         try ds.setSerializedField("foo", "123");
         try ds.setSerializedField("bar", "true");
 
@@ -420,7 +421,8 @@ test "Deserializer" {
     {
         const T = struct { foo: []const u8, bar: bool };
 
-        var ds = Deserializer(T){};
+        var ds = Deserializer(T){ .arena = std.heap.ArenaAllocator.init(std.testing.allocator) };
+        defer ds.deinit();
         try std.testing.expectError(error.UnknownField, ds.setSerializedField("baz", "123"));
     }
 
@@ -430,7 +432,8 @@ test "Deserializer" {
             foo: struct { bar: bool, baz: bool },
         };
 
-        var ds = Deserializer(T){};
+        var ds = Deserializer(T){ .arena = std.heap.ArenaAllocator.init(std.testing.allocator) };
+        defer ds.deinit();
         try ds.setSerializedField("foo.bar", "true");
         try ds.setSerializedField("foo.baz", "true");
 
@@ -439,29 +442,45 @@ test "Deserializer" {
         try util.testing.expectDeepEqual(T{ .foo = .{ .bar = true, .baz = true } }, val);
     }
 
-    // Union embedding
+    // Union behavior
     {
         const T = struct {
-            foo: union(enum) { bar: bool, baz: bool },
+            foo: union(enum) {
+                bar: struct {
+                    bar: bool,
+                },
+                baz: struct {
+                    baz: bool,
+                },
+            },
         };
 
-        var ds = Deserializer(T){};
+        var ds = Deserializer(T){ .arena = std.heap.ArenaAllocator.init(std.testing.allocator) };
-        try ds.setSerializedField("bar", "true");
+        defer ds.deinit();
+        try ds.setSerializedField("foo.bar", "true");
 
         const val = try ds.finish(std.testing.allocator);
         defer ds.finishFree(std.testing.allocator, val);
-        try util.testing.expectDeepEqual(T{ .foo = .{ .bar = true } }, val);
+        try util.testing.expectDeepEqual(T{ .foo = .{ .bar = .{ .bar = true } } }, val);
     }
 
     // Returns error if multiple union fields specified
     {
         const T = struct {
-            foo: union(enum) { bar: bool, baz: bool },
+            foo: union(enum) {
+                bar: struct {
+                    bar: bool,
+                },
+                baz: struct {
+                    baz: bool,
+                },
+            },
         };
 
-        var ds = Deserializer(T){};
+        var ds = Deserializer(T){ .arena = std.heap.ArenaAllocator.init(std.testing.allocator) };
-        try ds.setSerializedField("bar", "true");
+        defer ds.deinit();
-        try ds.setSerializedField("baz", "true");
+        try ds.setSerializedField("foo.bar", "true");
+        try ds.setSerializedField("foo.baz", "true");
 
         try std.testing.expectError(error.DuplicateUnionMember, ds.finish(std.testing.allocator));
     }
@@ -470,7 +489,8 @@ test "Deserializer" {
     {
         const T = struct { foo: []const u8 = "123", bar: bool = true };
 
-        var ds = Deserializer(T){};
+        var ds = Deserializer(T){ .arena = std.heap.ArenaAllocator.init(std.testing.allocator) };
+        defer ds.deinit();
 
         const val = try ds.finish(std.testing.allocator);
         defer ds.finishFree(std.testing.allocator, val);
@@ -481,7 +501,8 @@ test "Deserializer" {
     {
         const T = struct { foo: []const u8, bar: bool };
 
-        var ds = Deserializer(T){};
+        var ds = Deserializer(T){ .arena = std.heap.ArenaAllocator.init(std.testing.allocator) };
+        defer ds.deinit();
         try ds.setSerializedField("foo", "123");
 
         try std.testing.expectError(error.MissingField, ds.finish(std.testing.allocator));
@@ -494,7 +515,8 @@ test "Deserializer" {
             qux: ?union(enum) { quux: usize } = null,
         };
 
-        var ds = Deserializer(T){};
+        var ds = Deserializer(T){ .arena = std.heap.ArenaAllocator.init(std.testing.allocator) };
+        defer ds.deinit();
 
         const val = try ds.finish(std.testing.allocator);
         defer ds.finishFree(std.testing.allocator, val);
@@ -507,9 +529,10 @@ test "Deserializer" {
             qux: ?union(enum) { quux: usize } = null,
         };
 
-        var ds = Deserializer(T){};
+        var ds = Deserializer(T){ .arena = std.heap.ArenaAllocator.init(std.testing.allocator) };
+        defer ds.deinit();
         try ds.setSerializedField("foo.baz", "3");
-        try ds.setSerializedField("quux", "3");
+        try ds.setSerializedField("qux", "3");
 
         const val = try ds.finish(std.testing.allocator);
         defer ds.finishFree(std.testing.allocator, val);
@@ -522,9 +545,10 @@ test "Deserializer" {
             qux: ?union(enum) { quux: usize } = null,
         };
 
-        var ds = Deserializer(T){};
+        var ds = Deserializer(T){ .arena = std.heap.ArenaAllocator.init(std.testing.allocator) };
+        defer ds.deinit();
         try ds.setSerializedField("foo.bar", "3");
-        try ds.setSerializedField("quux", "3");
+        try ds.setSerializedField("qux", "3");
 
         try std.testing.expectError(error.MissingField, ds.finish(std.testing.allocator));
     }