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testing_t_rewriter.go
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testing_t_rewriter.go
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package convert
import (
"go/ast"
)
/*
* Rewrites any other top level funcs that receive a *testing.T param
*/
func rewriteOtherFuncsToUseGinkgoT(declarations []ast.Decl) {
for _, decl := range declarations {
decl, ok := decl.(*ast.FuncDecl)
if !ok {
continue
}
for _, param := range decl.Type.Params.List {
starExpr, ok := param.Type.(*ast.StarExpr)
if !ok {
continue
}
selectorExpr, ok := starExpr.X.(*ast.SelectorExpr)
if !ok {
continue
}
xIdent, ok := selectorExpr.X.(*ast.Ident)
if !ok || xIdent.Name != "testing" {
continue
}
if selectorExpr.Sel.Name != "T" {
continue
}
param.Type = newGinkgoTInterface()
}
}
}
/*
* Walks all of the nodes in the file, replacing *testing.T in struct
* and func literal nodes. eg:
* type foo struct { *testing.T }
* var bar = func(t *testing.T) { }
*/
func walkNodesInRootNodeReplacingTestingT(rootNode *ast.File) {
ast.Inspect(rootNode, func(node ast.Node) bool {
if node == nil {
return false
}
switch node := node.(type) {
case *ast.StructType:
replaceTestingTsInStructType(node)
case *ast.FuncLit:
replaceTypeDeclTestingTsInFuncLiteral(node)
}
return true
})
}
/*
* replaces named *testing.T inside a composite literal
*/
func replaceNamedTestingTsInKeyValueExpression(kve *ast.KeyValueExpr, testingT string) {
ident, ok := kve.Value.(*ast.Ident)
if !ok {
return
}
if ident.Name == testingT {
kve.Value = newGinkgoTFromIdent(ident)
}
}
/*
* replaces *testing.T params in a func literal with GinkgoT
*/
func replaceTypeDeclTestingTsInFuncLiteral(functionLiteral *ast.FuncLit) {
for _, arg := range functionLiteral.Type.Params.List {
starExpr, ok := arg.Type.(*ast.StarExpr)
if !ok {
continue
}
selectorExpr, ok := starExpr.X.(*ast.SelectorExpr)
if !ok {
continue
}
target, ok := selectorExpr.X.(*ast.Ident)
if !ok {
continue
}
if target.Name == "testing" && selectorExpr.Sel.Name == "T" {
arg.Type = newGinkgoTInterface()
}
}
}
/*
* Replaces *testing.T types inside of a struct declaration with a GinkgoT
* eg: type foo struct { *testing.T }
*/
func replaceTestingTsInStructType(structType *ast.StructType) {
for _, field := range structType.Fields.List {
starExpr, ok := field.Type.(*ast.StarExpr)
if !ok {
continue
}
selectorExpr, ok := starExpr.X.(*ast.SelectorExpr)
if !ok {
continue
}
xIdent, ok := selectorExpr.X.(*ast.Ident)
if !ok {
continue
}
if xIdent.Name == "testing" && selectorExpr.Sel.Name == "T" {
field.Type = newGinkgoTInterface()
}
}
}