"go/parser"
"go/scanner"
"go/token"
+ "internal/buildcfg"
"internal/testenv"
"internal/types/errors"
"os"
"path/filepath"
"reflect"
"regexp"
+ "runtime"
"strconv"
"strings"
"testing"
// testFiles type-checks the package consisting of the given files, and
// compares the resulting errors with the ERROR annotations in the source.
+// Except for manual tests, each package is type-checked twice, once without
+// use of Alias types, and once with Alias types.
//
// The srcs slice contains the file content for the files named in the
-// filenames slice. The manual parameter specifies whether this is a 'manual'
-// test.
+// filenames slice. The colDelta parameter specifies the tolerance for position
+// mismatch when comparing errors. The manual parameter specifies whether this
+// is a 'manual' test.
//
// If provided, opts may be used to mutate the Config before type-checking.
func testFiles(t *testing.T, filenames []string, srcs [][]byte, manual bool, opts ...func(*Config)) {
- if len(filenames) == 0 {
- t.Fatal("no source files")
+ // Alias types are disabled by default
+ testFilesImpl(t, filenames, srcs, manual, opts...)
+ if !manual {
+ t.Setenv("GODEBUG", "gotypesalias=1")
+ testFilesImpl(t, filenames, srcs, manual, opts...)
}
+}
- var conf Config
- flags := flag.NewFlagSet("", flag.PanicOnError)
- flags.StringVar(&conf.GoVersion, "lang", "", "")
- flags.BoolVar(&conf.FakeImportC, "fakeImportC", false, "")
- if err := parseFlags(srcs[0], flags); err != nil {
- t.Fatal(err)
+func testFilesImpl(t *testing.T, filenames []string, srcs [][]byte, manual bool, opts ...func(*Config)) {
+ if len(filenames) == 0 {
+ t.Fatal("no source files")
}
+ // parse files
files, errlist := parseFiles(t, filenames, srcs, parser.AllErrors)
-
pkgName := "<no package>"
if len(files) > 0 {
pkgName = files[0].Name.Name
}
-
listErrors := manual && !*verifyErrors
if listErrors && len(errlist) > 0 {
t.Errorf("--- %s:", pkgName)
}
}
- // typecheck and collect typechecker errors
+ // set up typechecker
+ var conf Config
*boolFieldAddr(&conf, "_Trace") = manual && testing.Verbose()
conf.Importer = importer.Default()
conf.Error = func(err error) {
}
}
+ // apply custom configuration
for _, opt := range opts {
opt(&conf)
}
- conf.Check(pkgName, fset, files, nil)
+ // apply flag setting (overrides custom configuration)
+ var goexperiment, gotypesalias string
+ flags := flag.NewFlagSet("", flag.PanicOnError)
+ flags.StringVar(&conf.GoVersion, "lang", "", "")
+ flags.StringVar(&goexperiment, "goexperiment", "", "")
+ flags.BoolVar(&conf.FakeImportC, "fakeImportC", false, "")
+ flags.StringVar(&gotypesalias, "gotypesalias", "", "")
+ if err := parseFlags(srcs[0], flags); err != nil {
+ t.Fatal(err)
+ }
+
+ exp, err := buildcfg.ParseGOEXPERIMENT(runtime.GOOS, runtime.GOARCH, goexperiment)
+ if err != nil {
+ t.Fatal(err)
+ }
+ old := buildcfg.Experiment
+ defer func() {
+ buildcfg.Experiment = old
+ }()
+ buildcfg.Experiment = *exp
+
+ // By default, gotypesalias is not set.
+ if gotypesalias != "" {
+ t.Setenv("GODEBUG", "gotypesalias="+gotypesalias)
+ }
+
+ // Provide Config.Info with all maps so that info recording is tested.
+ info := Info{
+ Types: make(map[ast.Expr]TypeAndValue),
+ Instances: make(map[*ast.Ident]Instance),
+ Defs: make(map[*ast.Ident]Object),
+ Uses: make(map[*ast.Ident]Object),
+ Implicits: make(map[ast.Node]Object),
+ Selections: make(map[*ast.SelectorExpr]*Selection),
+ Scopes: make(map[ast.Node]*Scope),
+ FileVersions: make(map[*ast.File]string),
+ }
+ // typecheck
+ conf.Check(pkgName, fset, files, &info)
if listErrors {
return
}
return (*bool)(v.FieldByName(name).Addr().UnsafePointer())
}
+// stringFieldAddr(conf, name) returns the address of the string field conf.<name>.
+// For accessing unexported fields.
+func stringFieldAddr(conf *Config, name string) *string {
+ v := reflect.Indirect(reflect.ValueOf(conf))
+ return (*string)(v.FieldByName(name).Addr().UnsafePointer())
+}
+
// TestManual is for manual testing of a package - either provided
// as a list of filenames belonging to the package, or a directory
// name containing the package files - after the test arguments
}
func TestCheck(t *testing.T) {
+ old := buildcfg.Experiment.RangeFunc
+ defer func() {
+ buildcfg.Experiment.RangeFunc = old
+ }()
+ buildcfg.Experiment.RangeFunc = true
+
DefPredeclaredTestFuncs()
testDirFiles(t, "../../internal/types/testdata/check", false)
}