Move Val test to be an autodoc test

src/val.zig

@@ -2,7 +2,6 @@ const std = @import("std");
 const expect = std.testing.expect;
 
 const Func = @import("./func.zig").Func;
-const Extern = @import("./extern.zig").Extern;
 const Vec = @import("./vec.zig").Vec;
 
 /// A host-defined un-forgeable reference to pass into WebAssembly.
@@ -144,8 +143,9 @@ pub const Val = extern struct {
 
     extern "c" fn wasmtime_val_copy(*Val, *const Val) void;
     extern "c" fn wasmtime_val_delete(*Val) void;
+};
 
-    test "convert value to Val and back" {
+test Val {
     var small = Val.fromValue(i32, -12);
     defer small.deinit();
     try expect(small.kind == ValKind.i32);
@@ -177,15 +177,7 @@ pub const Val = extern struct {
     try expect(no.kind == ValKind.i32);
     try expect(no.of.i32 == 0);
     try expect(try no.toValue(bool) == false);
-    }
+}
-};
-
-// pub const ValVec = Vec(Val, wasm_val_vec_new_empty, wasm_val_vec_new_uninitialized, wasm_val_vec_new, wasm_val_vec_copy, wasm_val_vec_delete);
-// extern "c" fn wasm_val_vec_new_empty(*anyopaque, usize) void;
-// extern "c" fn wasm_val_vec_new_uninitialized(*anyopaque, usize) void;
-// extern "c" fn wasm_val_vec_new(*anyopaque, usize, [*]const Val) void;
-// extern "c" fn wasm_val_vec_copy(*anyopaque, *const anyopaque) void;
-// extern "c" fn wasm_val_vec_delete(*anyopaque) void;
 
 /// An object representing the type of a value.
 pub const ValType = opaque {