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interp_consistent_test.go
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interp_consistent_test.go
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package interp_test
import (
"go/build"
"io"
"os"
"os/exec"
"path/filepath"
"runtime"
"strings"
"testing"
"github.com/traefik/yaegi/interp"
"github.com/traefik/yaegi/stdlib"
"github.com/traefik/yaegi/stdlib/unsafe"
)
func TestInterpConsistencyBuild(t *testing.T) {
if testing.Short() {
t.Skip("short mode")
}
dir := filepath.Join("..", "_test", "tmp")
if _, err := os.Stat(dir); os.IsNotExist(err) {
if err := os.Mkdir(dir, 0o700); err != nil {
t.Fatal(err)
}
}
baseDir := filepath.Join("..", "_test")
files, err := os.ReadDir(baseDir)
if err != nil {
t.Fatal(err)
}
for _, file := range files {
if filepath.Ext(file.Name()) != ".go" ||
file.Name() == "assign11.go" || // expect error
file.Name() == "assign12.go" || // expect error
file.Name() == "assign15.go" || // expect error
file.Name() == "bad0.go" || // expect error
file.Name() == "break0.go" || // expect error
file.Name() == "cont3.go" || // expect error
file.Name() == "const9.go" || // expect error
file.Name() == "export1.go" || // non-main package
file.Name() == "export0.go" || // non-main package
file.Name() == "for7.go" || // expect error
file.Name() == "fun21.go" || // expect error
file.Name() == "fun22.go" || // expect error
file.Name() == "fun23.go" || // expect error
file.Name() == "fun24.go" || // expect error
file.Name() == "fun25.go" || // expect error
file.Name() == "if2.go" || // expect error
file.Name() == "import6.go" || // expect error
file.Name() == "init1.go" || // expect error
file.Name() == "io0.go" || // use random number
file.Name() == "issue-1093.go" || // expect error
file.Name() == "issue-1276.go" || // expect error
file.Name() == "issue-1330.go" || // expect error
file.Name() == "op1.go" || // expect error
file.Name() == "op7.go" || // expect error
file.Name() == "op9.go" || // expect error
file.Name() == "bltn0.go" || // expect error
file.Name() == "method16.go" || // private struct field
file.Name() == "method39.go" || // expect error
file.Name() == "switch8.go" || // expect error
file.Name() == "switch9.go" || // expect error
file.Name() == "switch13.go" || // expect error
file.Name() == "switch19.go" || // expect error
file.Name() == "time0.go" || // display time (similar to random number)
file.Name() == "factor.go" || // bench
file.Name() == "fib.go" || // bench
file.Name() == "type5.go" || // used to illustrate a limitation with no workaround, related to the fact that the reflect package does not allow the creation of named types
file.Name() == "type6.go" || // used to illustrate a limitation with no workaround, related to the fact that the reflect package does not allow the creation of named types
file.Name() == "redeclaration0.go" || // expect error
file.Name() == "redeclaration1.go" || // expect error
file.Name() == "redeclaration2.go" || // expect error
file.Name() == "redeclaration3.go" || // expect error
file.Name() == "redeclaration4.go" || // expect error
file.Name() == "redeclaration5.go" || // expect error
file.Name() == "redeclaration-global0.go" || // expect error
file.Name() == "redeclaration-global1.go" || // expect error
file.Name() == "redeclaration-global2.go" || // expect error
file.Name() == "redeclaration-global3.go" || // expect error
file.Name() == "redeclaration-global4.go" || // expect error
file.Name() == "redeclaration-global5.go" || // expect error
file.Name() == "redeclaration-global6.go" || // expect error
file.Name() == "redeclaration-global7.go" || // expect error
file.Name() == "pkgname0.go" || // has deps
file.Name() == "pkgname1.go" || // expect error
file.Name() == "pkgname2.go" || // has deps
file.Name() == "ipp_as_key.go" || // has deps
file.Name() == "restricted0.go" || // expect error
file.Name() == "restricted1.go" || // expect error
file.Name() == "restricted2.go" || // expect error
file.Name() == "restricted3.go" || // expect error
file.Name() == "server6.go" || // syntax parsing
file.Name() == "server5.go" || // syntax parsing
file.Name() == "server4.go" || // syntax parsing
file.Name() == "server3.go" || // syntax parsing
file.Name() == "server2.go" || // syntax parsing
file.Name() == "server1a.go" || // syntax parsing
file.Name() == "server1.go" || // syntax parsing
file.Name() == "server0.go" || // syntax parsing
file.Name() == "server.go" || // syntax parsing
file.Name() == "range9.go" || // expect error
file.Name() == "unsafe6.go" || // needs go.mod to be 1.17
file.Name() == "unsafe7.go" || // needs go.mod to be 1.17
file.Name() == "type27.go" || // expect error
file.Name() == "type28.go" || // expect error
file.Name() == "type29.go" || // expect error
file.Name() == "type30.go" || // expect error
file.Name() == "type31.go" || // expect error
file.Name() == "type32.go" || // expect error
file.Name() == "type33.go" { // expect error
continue
}
file := file
t.Run(file.Name(), func(t *testing.T) {
filePath := filepath.Join(baseDir, file.Name())
// catch stdout
backupStdout := os.Stdout
defer func() {
os.Stdout = backupStdout
}()
r, w, _ := os.Pipe()
os.Stdout = w
i := interp.New(interp.Options{GoPath: build.Default.GOPATH})
if err := i.Use(stdlib.Symbols); err != nil {
t.Fatal(err)
}
if err := i.Use(interp.Symbols); err != nil {
t.Fatal(err)
}
if err := i.Use(unsafe.Symbols); err != nil {
t.Fatal(err)
}
_, err = i.EvalPath(filePath)
if err != nil {
t.Fatal(err)
}
// read stdout
if err = w.Close(); err != nil {
t.Fatal(err)
}
outInterp, err := io.ReadAll(r)
if err != nil {
t.Fatal(err)
}
// restore Stdout
os.Stdout = backupStdout
bin := filepath.Join(dir, strings.TrimSuffix(file.Name(), ".go"))
cmdBuild := exec.Command("go", "build", "-tags=dummy", "-o", bin, filePath)
outBuild, err := cmdBuild.CombinedOutput()
if err != nil {
t.Log(string(outBuild))
t.Fatal(err)
}
cmd := exec.Command(bin)
outRun, err := cmd.CombinedOutput()
if err != nil {
t.Log(string(outRun))
t.Fatal(err)
}
if string(outInterp) != string(outRun) {
t.Errorf("\nGot: %q,\n want: %q", string(outInterp), string(outRun))
}
})
}
}
func TestInterpErrorConsistency(t *testing.T) {
if runtime.Version() >= "go1.18" {
// Error messages have changed a lot between go1.17 and go1.18.
// Skip testing on go1.18 and beyond while we support go1.17.
// It can be re-enabled after dropping go1.17.
t.Skip("skip go1.18+")
}
testCases := []struct {
fileName string
expectedInterp string
expectedExec string
}{
{
fileName: "assign11.go",
expectedInterp: "6:2: assignment mismatch: 3 variables but fmt.Println returns 2 values",
expectedExec: "6:10: assignment mismatch: 3 variables but fmt.Println returns 2 values",
},
{
fileName: "assign12.go",
expectedInterp: "6:2: assignment mismatch: 3 variables but fmt.Println returns 2 values",
expectedExec: "6:10: assignment mismatch: 3 variables but fmt.Println returns 2 values",
},
{
fileName: "bad0.go",
expectedInterp: "1:1: expected 'package', found println",
expectedExec: "1:1: expected 'package', found println",
},
{
fileName: "break0.go",
expectedInterp: "15:5: invalid break label OuterLoop",
expectedExec: "15:11: invalid break label OuterLoop",
},
{
fileName: "cont3.go",
expectedInterp: "15:5: invalid continue label OuterLoop",
expectedExec: "15:14: invalid continue label OuterLoop",
},
{
fileName: "const9.go",
expectedInterp: "5:2: constant definition loop",
expectedExec: "5:2: constant definition loop",
},
{
fileName: "if2.go",
expectedInterp: "7:5: non-bool used as if condition",
expectedExec: "7:2: non-bool i % 1000000 (type int) used as if condition",
},
{
fileName: "for7.go",
expectedInterp: "4:14: non-bool used as for condition",
expectedExec: "4:2: non-bool i (type int) used as for condition",
},
{
fileName: "fun21.go",
expectedInterp: "4:2: not enough arguments to return",
expectedExec: "4:2: not enough arguments to return",
},
{
fileName: "fun22.go",
expectedInterp: "6:2: not enough arguments in call to time.Date",
expectedExec: "6:11: not enough arguments in call to time.Date",
},
{
fileName: "fun23.go",
expectedInterp: "3:17: too many arguments to return",
expectedExec: "3:17: too many arguments to return",
},
{
fileName: "issue-1093.go",
expectedInterp: "9:6: cannot use type untyped string as type int in assignment",
expectedExec: `9:4: cannot use "a" + b() (type string) as type int in assignment`,
},
{
fileName: "op1.go",
expectedInterp: "5:2: invalid operation: mismatched types int and untyped float",
expectedExec: "5:4: constant 1.3 truncated to integer",
},
{
fileName: "bltn0.go",
expectedInterp: "4:7: use of builtin println not in function call",
},
{
fileName: "import6.go",
expectedInterp: "import cycle not allowed",
expectedExec: "import cycle not allowed",
},
{
fileName: "switch8.go",
expectedInterp: "5:2: fallthrough statement out of place",
expectedExec: "5:2: fallthrough statement out of place",
},
{
fileName: "switch9.go",
expectedInterp: "9:3: cannot fallthrough in type switch",
expectedExec: "9:3: cannot fallthrough in type switch",
},
{
fileName: "switch13.go",
expectedInterp: "9:2: i is not a type",
expectedExec: "9:2: i (type interface {}) is not a type",
},
{
fileName: "switch19.go",
expectedInterp: "37:2: duplicate case Bir in type switch",
expectedExec: "37:2: duplicate case Bir in type switch",
},
}
for _, test := range testCases {
t.Run(test.fileName, func(t *testing.T) {
if len(test.expectedInterp) == 0 && len(test.expectedExec) == 0 {
t.Fatal("at least expectedInterp must be define")
}
filePath := filepath.Join("..", "_test", test.fileName)
i := interp.New(interp.Options{GoPath: build.Default.GOPATH})
if err := i.Use(stdlib.Symbols); err != nil {
t.Fatal(err)
}
_, errEval := i.EvalPath(filePath)
if errEval == nil {
t.Fatal("An error is expected but got none.")
}
if !strings.Contains(errEval.Error(), test.expectedInterp) {
t.Errorf("got %q, want: %q", errEval.Error(), test.expectedInterp)
}
cmd := exec.Command("go", "run", filePath)
outRun, errExec := cmd.CombinedOutput()
if errExec == nil {
t.Log(string(outRun))
t.Fatal("An error is expected but got none.")
}
if len(test.expectedExec) == 0 && !strings.Contains(string(outRun), test.expectedInterp) {
t.Errorf("got %q, want: %q", string(outRun), test.expectedInterp)
} else if !strings.Contains(string(outRun), test.expectedExec) {
t.Errorf("got %q, want: %q", string(outRun), test.expectedExec)
}
})
}
}