whatcanGOwrong

go/pkg/mod/go.starlark.net@v0.0.0-20231101134539-556fd59b42f6/resolve/resolve_test.go

@@ -0,0 +1,92 @@
+// Copyright 2017 The Bazel Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package resolve_test
+
+import (
+	"strings"
+	"testing"
+
+	"go.starlark.net/internal/chunkedfile"
+	"go.starlark.net/resolve"
+	"go.starlark.net/starlarktest"
+	"go.starlark.net/syntax"
+)
+
+// A test may enable non-standard options by containing (e.g.) "option:recursion".
+func getOptions(src string) *syntax.FileOptions {
+	return &syntax.FileOptions{
+		Set:               option(src, "set"),
+		While:             option(src, "while"),
+		TopLevelControl:   option(src, "toplevelcontrol"),
+		GlobalReassign:    option(src, "globalreassign"),
+		LoadBindsGlobally: option(src, "loadbindsglobally"),
+		Recursion:         option(src, "recursion"),
+	}
+}
+
+func option(chunk, name string) bool {
+	return strings.Contains(chunk, "option:"+name)
+}
+
+func TestResolve(t *testing.T) {
+	filename := starlarktest.DataFile("resolve", "testdata/resolve.star")
+	for _, chunk := range chunkedfile.Read(filename, t) {
+		// A chunk may set options by containing e.g. "option:recursion".
+		opts := getOptions(chunk.Source)
+
+		f, err := opts.Parse(filename, chunk.Source, 0)
+		if err != nil {
+			t.Error(err)
+			continue
+		}
+
+		if err := resolve.File(f, isPredeclared, isUniversal); err != nil {
+			for _, err := range err.(resolve.ErrorList) {
+				chunk.GotError(int(err.Pos.Line), err.Msg)
+			}
+		}
+		chunk.Done()
+	}
+}
+
+func TestDefVarargsAndKwargsSet(t *testing.T) {
+	source := "def f(*args, **kwargs): pass\n"
+	file, err := syntax.Parse("foo.star", source, 0)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := resolve.File(file, isPredeclared, isUniversal); err != nil {
+		t.Fatal(err)
+	}
+	fn := file.Stmts[0].(*syntax.DefStmt).Function.(*resolve.Function)
+	if !fn.HasVarargs {
+		t.Error("HasVarargs not set")
+	}
+	if !fn.HasKwargs {
+		t.Error("HasKwargs not set")
+	}
+}
+
+func TestLambdaVarargsAndKwargsSet(t *testing.T) {
+	source := "f = lambda *args, **kwargs: 0\n"
+	file, err := syntax.Parse("foo.star", source, 0)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := resolve.File(file, isPredeclared, isUniversal); err != nil {
+		t.Fatal(err)
+	}
+	lam := file.Stmts[0].(*syntax.AssignStmt).RHS.(*syntax.LambdaExpr).Function.(*resolve.Function)
+	if !lam.HasVarargs {
+		t.Error("HasVarargs not set")
+	}
+	if !lam.HasKwargs {
+		t.Error("HasKwargs not set")
+	}
+}
+
+func isPredeclared(name string) bool { return name == "M" }
+
+func isUniversal(name string) bool { return name == "U" || name == "float" }