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1// Copyright 2017 The Bazel Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5package resolve_test
6
7import (
8	"strings"
9	"testing"
10
11	"go.starlark.net/internal/chunkedfile"
12	"go.starlark.net/resolve"
13	"go.starlark.net/starlarktest"
14	"go.starlark.net/syntax"
15)
16
17func setOptions(src string) {
18	resolve.AllowGlobalReassign = option(src, "globalreassign")
19	resolve.AllowRecursion = option(src, "recursion")
20	resolve.AllowSet = option(src, "set")
21	resolve.LoadBindsGlobally = option(src, "loadbindsglobally")
22}
23
24func option(chunk, name string) bool {
25	return strings.Contains(chunk, "option:"+name)
26}
27
28func TestResolve(t *testing.T) {
29	defer setOptions("")
30	filename := starlarktest.DataFile("resolve", "testdata/resolve.star")
31	for _, chunk := range chunkedfile.Read(filename, t) {
32		f, err := syntax.Parse(filename, chunk.Source, 0)
33		if err != nil {
34			t.Error(err)
35			continue
36		}
37
38		// A chunk may set options by containing e.g. "option:recursion".
39		setOptions(chunk.Source)
40
41		if err := resolve.File(f, isPredeclared, isUniversal); err != nil {
42			for _, err := range err.(resolve.ErrorList) {
43				chunk.GotError(int(err.Pos.Line), err.Msg)
44			}
45		}
46		chunk.Done()
47	}
48}
49
50func TestDefVarargsAndKwargsSet(t *testing.T) {
51	source := "def f(*args, **kwargs): pass\n"
52	file, err := syntax.Parse("foo.star", source, 0)
53	if err != nil {
54		t.Fatal(err)
55	}
56	if err := resolve.File(file, isPredeclared, isUniversal); err != nil {
57		t.Fatal(err)
58	}
59	fn := file.Stmts[0].(*syntax.DefStmt).Function.(*resolve.Function)
60	if !fn.HasVarargs {
61		t.Error("HasVarargs not set")
62	}
63	if !fn.HasKwargs {
64		t.Error("HasKwargs not set")
65	}
66}
67
68func TestLambdaVarargsAndKwargsSet(t *testing.T) {
69	resolve.AllowLambda = true
70	source := "f = lambda *args, **kwargs: 0\n"
71	file, err := syntax.Parse("foo.star", source, 0)
72	if err != nil {
73		t.Fatal(err)
74	}
75	if err := resolve.File(file, isPredeclared, isUniversal); err != nil {
76		t.Fatal(err)
77	}
78	lam := file.Stmts[0].(*syntax.AssignStmt).RHS.(*syntax.LambdaExpr).Function.(*resolve.Function)
79	if !lam.HasVarargs {
80		t.Error("HasVarargs not set")
81	}
82	if !lam.HasKwargs {
83		t.Error("HasKwargs not set")
84	}
85}
86
87func isPredeclared(name string) bool { return name == "M" }
88
89func isUniversal(name string) bool { return name == "U" || name == "float" }
90