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|
package convert
import (
"fmt"
"go/ast"
"strings"
"unicode"
)
/*
* Creates a func init() node
*/
func createVarUnderscoreBlock() *ast.ValueSpec {
valueSpec := &ast.ValueSpec{}
object := &ast.Object{Kind: 4, Name: "_", Decl: valueSpec, Data: 0}
ident := &ast.Ident{Name: "_", Obj: object}
valueSpec.Names = append(valueSpec.Names, ident)
return valueSpec
}
/*
* Creates a Describe("Testing with ginkgo", func() { }) node
*/
func createDescribeBlock() *ast.CallExpr {
blockStatement := &ast.BlockStmt{List: []ast.Stmt{}}
fieldList := &ast.FieldList{}
funcType := &ast.FuncType{Params: fieldList}
funcLit := &ast.FuncLit{Type: funcType, Body: blockStatement}
basicLit := &ast.BasicLit{Kind: 9, Value: "\"Testing with Ginkgo\""}
describeIdent := &ast.Ident{Name: "Describe"}
return &ast.CallExpr{Fun: describeIdent, Args: []ast.Expr{basicLit, funcLit}}
}
/*
* Convenience function to return the name of the *testing.T param
* for a Test function that will be rewritten. This is useful because
* we will want to replace the usage of this named *testing.T inside the
* body of the function with a GinktoT.
*/
func namedTestingTArg(node *ast.FuncDecl) string {
return node.Type.Params.List[0].Names[0].Name // *exhale*
}
/*
* Convenience function to return the block statement node for a Describe statement
*/
func blockStatementFromDescribe(desc *ast.CallExpr) *ast.BlockStmt {
var funcLit *ast.FuncLit
var found = false
for _, node := range desc.Args {
switch node := node.(type) {
case *ast.FuncLit:
found = true
funcLit = node
break
}
}
if !found {
panic("Error finding ast.FuncLit inside describe statement. Somebody done goofed.")
}
return funcLit.Body
}
/* convenience function for creating an It("TestNameHere")
* with all the body of the test function inside the anonymous
* func passed to It()
*/
func createItStatementForTestFunc(testFunc *ast.FuncDecl) *ast.ExprStmt {
blockStatement := &ast.BlockStmt{List: testFunc.Body.List}
fieldList := &ast.FieldList{}
funcType := &ast.FuncType{Params: fieldList}
funcLit := &ast.FuncLit{Type: funcType, Body: blockStatement}
testName := rewriteTestName(testFunc.Name.Name)
basicLit := &ast.BasicLit{Kind: 9, Value: fmt.Sprintf("\"%s\"", testName)}
itBlockIdent := &ast.Ident{Name: "It"}
callExpr := &ast.CallExpr{Fun: itBlockIdent, Args: []ast.Expr{basicLit, funcLit}}
return &ast.ExprStmt{X: callExpr}
}
/*
* rewrite test names to be human readable
* eg: rewrites "TestSomethingAmazing" as "something amazing"
*/
func rewriteTestName(testName string) string {
nameComponents := []string{}
currentString := ""
indexOfTest := strings.Index(testName, "Test")
if indexOfTest != 0 {
return testName
}
testName = strings.Replace(testName, "Test", "", 1)
first, rest := testName[0], testName[1:]
testName = string(unicode.ToLower(rune(first))) + rest
for _, rune := range testName {
if unicode.IsUpper(rune) {
nameComponents = append(nameComponents, currentString)
currentString = string(unicode.ToLower(rune))
} else {
currentString += string(rune)
}
}
return strings.Join(append(nameComponents, currentString), " ")
}
func newGinkgoTFromIdent(ident *ast.Ident) *ast.CallExpr {
return &ast.CallExpr{
Lparen: ident.NamePos + 1,
Rparen: ident.NamePos + 2,
Fun: &ast.Ident{Name: "GinkgoT"},
}
}
func newGinkgoTInterface() *ast.Ident {
return &ast.Ident{Name: "GinkgoTInterface"}
}
|
