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.
@@ -144,48 +143,41 @@ 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" {
-        var small = Val.fromValue(i32, -12);
-        defer small.deinit();
-        try expect(small.kind == ValKind.i32);
-        try expect(small.of.i32 == -12);
-        try expect(try small.toValue(i32) == -12);
-
-        var large = Val.fromValue(u64, 10000000000000000000);
-        defer large.deinit();
-        try expect(large.kind == ValKind.i64);
-        // The provided integer can't be represented as an i64, but Wasm
-        // only knows about signed integers, so we have to store it as one.
-        try expect(large.of.i64 == @as(i64, @bitCast(@as(u64, 10000000000000000000))));
-        try expect(try large.toValue(u64) == 10000000000000000000);
-
-        var pi = Val.fromValue(f32, 3.14159);
-        defer pi.deinit();
-        try expect(pi.kind == ValKind.f32);
-        try expect(pi.of.f32 == 3.14159);
-        try expect(try pi.toValue(f32) == 3.14159);
-
-        var yes = Val.fromValue(bool, true);
-        defer yes.deinit();
-        try expect(yes.kind == ValKind.i32);
-        try expect(yes.of.i32 == 1);
-        try expect(try yes.toValue(bool) == true);
-
-        var no = Val.fromValue(bool, false);
-        defer no.deinit();
-        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;
+test Val {
+    var small = Val.fromValue(i32, -12);
+    defer small.deinit();
+    try expect(small.kind == ValKind.i32);
+    try expect(small.of.i32 == -12);
+    try expect(try small.toValue(i32) == -12);
+
+    var large = Val.fromValue(u64, 10000000000000000000);
+    defer large.deinit();
+    try expect(large.kind == ValKind.i64);
+    // The provided integer can't be represented as an i64, but Wasm
+    // only knows about signed integers, so we have to store it as one.
+    try expect(large.of.i64 == @as(i64, @bitCast(@as(u64, 10000000000000000000))));
+    try expect(try large.toValue(u64) == 10000000000000000000);
+
+    var pi = Val.fromValue(f32, 3.14159);
+    defer pi.deinit();
+    try expect(pi.kind == ValKind.f32);
+    try expect(pi.of.f32 == 3.14159);
+    try expect(try pi.toValue(f32) == 3.14159);
+
+    var yes = Val.fromValue(bool, true);
+    defer yes.deinit();
+    try expect(yes.kind == ValKind.i32);
+    try expect(yes.of.i32 == 1);
+    try expect(try yes.toValue(bool) == true);
+
+    var no = Val.fromValue(bool, false);
+    defer no.deinit();
+    try expect(no.kind == ValKind.i32);
+    try expect(no.of.i32 == 0);
+    try expect(try no.toValue(bool) == false);
+}
 
 /// An object representing the type of a value.
 pub const ValType = opaque {