github.com/mshitrit/go-mutesting@v0.0.0-20210528084812-ff81dcaedfea/mutator/branch/mutatecase.go (about)

     1  package branch
     2  
     3  import (
     4  	"go/ast"
     5  	"go/types"
     6  
     7  	"github.com/zimmski/go-mutesting/astutil"
     8  	"github.com/zimmski/go-mutesting/mutator"
     9  )
    10  
    11  func init() {
    12  	mutator.Register("branch/case", MutatorCase)
    13  }
    14  
    15  // MutatorCase implements a mutator for case clauses.
    16  func MutatorCase(pkg *types.Package, info *types.Info, node ast.Node) []mutator.Mutation {
    17  	n, ok := node.(*ast.CaseClause)
    18  	if !ok {
    19  		return nil
    20  	}
    21  
    22  	old := n.Body
    23  
    24  	return []mutator.Mutation{
    25  		{
    26  			Change: func() {
    27  				n.Body = []ast.Stmt{
    28  					astutil.CreateNoopOfStatements(pkg, info, n.Body),
    29  				}
    30  			},
    31  			Reset: func() {
    32  				n.Body = old
    33  			},
    34  		},
    35  	}
    36  }