testgrad

type Func struct {
	// GradOf declares the function (which must be named `F`) to compute the gradient of.
	GradOf string

	// Want stores the source code of the expected gradient of the function
	Want string

	// GradImportName is the name of the import of the grad package.
	// If empty, then the default import name is used.
	GradImportName string

	// Err is the substring expected if the compiler returns an error.
	Err string
}