// package suffix.  Packages which have test files must be tests.  Don't
		// ask me, this is what packages.Load produces.
		if strings.HasSuffix(pkg.PkgPath, "_test") || hasTestFiles(pkg.GoFiles) {
			// NOTE: This syntax can be undone with unmassage().
			pkg.PkgPath = strings.TrimSuffix(pkg.PkgPath, "_test") + " ((tests:" + pkg.Name + "))"
			klog.V(3).Infof("renamed to: %q", pkg.PkgPath)
		}

		input:  []string{"foo.go", "foo_test.go"},
		expect: true,
	}, {
		input:  []string{"foo.go", "foo_test.go", "bar.go", "bar_test.go"},
		expect: true,
	}}

	for _, tc := range cases {
		ret := hasTestFiles(tc.input)
		if ret != tc.expect {
			t.Errorf("expected %v, got %v: %q", tc.expect, ret, tc.input)
		}
	}
}

func TestPackageDir(t *testing.T) {
	cases := []struct {
		input  *packages.Package