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// Copyright 2018 The Go 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 imports
import (
"bytes"
"internal/testenv"
"os"
"path"
"path/filepath"
"strings"
"testing"
)
func TestScan(t *testing.T) {
testenv.MustHaveGoBuild(t)
imports, testImports, err := ScanDir(filepath.Join(testenv.GOROOT(t), "src/encoding/json"), Tags())
if err != nil {
t.Fatal(err)
}
foundBase64 := false
for _, p := range imports {
if p == "encoding/base64" {
foundBase64 = true
}
if p == "encoding/binary" {
// A dependency but not an import
t.Errorf("json reported as importing encoding/binary but does not")
}
if p == "net/http" {
// A test import but not an import
t.Errorf("json reported as importing net/http but does not")
}
}
if !foundBase64 {
t.Errorf("json missing import encoding/base64 (%q)", imports)
}
foundHTTP := false
for _, p := range testImports {
if p == "net/http" {
foundHTTP = true
}
if p == "unicode/utf16" {
// A package import but not a test import
t.Errorf("json reported as test-importing unicode/utf16 but does not")
}
}
if !foundHTTP {
t.Errorf("json missing test import net/http (%q)", testImports)
}
}
func TestScanDir(t *testing.T) {
testenv.MustHaveGoBuild(t)
dirs, err := os.ReadDir("testdata")
if err != nil {
t.Fatal(err)
}
for _, dir := range dirs {
if !dir.IsDir() || strings.HasPrefix(dir.Name(), ".") {
continue
}
t.Run(dir.Name(), func(t *testing.T) {
tagsData, err := os.ReadFile(filepath.Join("testdata", dir.Name(), "tags.txt"))
if err != nil {
t.Fatalf("error reading tags: %v", err)
}
tags := make(map[string]bool)
for _, t := range strings.Fields(string(tagsData)) {
tags[t] = true
}
wantData, err := os.ReadFile(filepath.Join("testdata", dir.Name(), "want.txt"))
if err != nil {
t.Fatalf("error reading want: %v", err)
}
want := string(bytes.TrimSpace(wantData))
imports, _, err := ScanDir(path.Join("testdata", dir.Name()), tags)
if err != nil {
t.Fatal(err)
}
got := strings.Join(imports, "\n")
if got != want {
t.Errorf("ScanDir: got imports:\n%s\n\nwant:\n%s", got, want)
}
})
}
}
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