if w == nil {
		return unknown
	}
	switch {
	case w.ArrayT != nil:
		return w.ArrayT.Name
	case w.SliceT != nil:
		return w.SliceT.Name
	case w.StructT != nil:
		return w.StructT.Name
	case w.MapT != nil:
		return w.MapT.Name
	case w.GobEncoderT != nil:
		return w.GobEncoderT.Name
	case w.BinaryMarshalerT != nil:
		return w.BinaryMarshalerT.Name
	case w.TextMarshalerT != nil:

which becomes an attribute for all the fields in the corresponding
field declaration. An empty tag string is equivalent to an absent tag.
The tags are made visible through a <a href="/pkg/reflect/#StructTag">reflection interface</a>
and take part in <a href="#Type_identity">type identity</a> for structs
but are otherwise ignored.
</p>

<pre>
struct {

which becomes an attribute for all the fields in the corresponding
field declaration. An empty tag string is equivalent to an absent tag.
The tags are made visible through a <a href="/pkg/reflect/#StructTag">reflection interface</a>
and take part in <a href="#Type_identity">type identity</a> for structs
but are otherwise ignored.
</p>

<pre>
struct {

pair (-type id, encoded-type) where encoded-type is the gob encoding of a wireType
description, constructed from these types:

	type wireType struct {
		ArrayT           *ArrayType
		SliceT           *SliceType
		StructT          *StructType
		MapT             *MapType
		GobEncoderT      *gobEncoderType
		BinaryMarshalerT *gobEncoderType
		TextMarshalerT   *gobEncoderType

	}
	type arrayType struct {
		CommonType

	"-errorsas",
	// "-httpresponse",
	"-ifaceassert",
	// "-lostcancel",
	// "-methods",
	"-nilfunc",
	"-printf",
	// "-rangeloops",
	// "-shift",
	"-slog",
	"-stringintconv",
	// "-structtags",
	// "-tests",
	// "-unreachable",
	// "-unsafeptr",
	// "-unusedresult",
}

func runTest(ctx context.Context, cmd *base.Command, args []string) {
	pkgArgs, testArgs = testFlags(args)