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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 godoc
import (
"go/build"
"testing"
)
func TestParseVersionRow(t *testing.T) {
tests := []struct {
row string
want versionedRow
}{
{
row: "# comment",
},
{
row: "",
},
{
row: "pkg archive/tar, type Writer struct",
want: versionedRow{
pkg: "archive/tar",
kind: "type",
name: "Writer",
},
},
{
row: "pkg archive/tar, type Header struct, AccessTime time.Time",
want: versionedRow{
pkg: "archive/tar",
kind: "field",
structName: "Header",
name: "AccessTime",
},
},
{
row: "pkg archive/tar, method (*Reader) Read([]uint8) (int, error)",
want: versionedRow{
pkg: "archive/tar",
kind: "method",
name: "Read",
recv: "*Reader",
},
},
{
row: "pkg archive/zip, func FileInfoHeader(os.FileInfo) (*FileHeader, error)",
want: versionedRow{
pkg: "archive/zip",
kind: "func",
name: "FileInfoHeader",
},
},
{
row: "pkg encoding/base32, method (Encoding) WithPadding(int32) *Encoding",
want: versionedRow{
pkg: "encoding/base32",
kind: "method",
name: "WithPadding",
recv: "Encoding",
},
},
}
for i, tt := range tests {
got, ok := parseRow(tt.row)
if !ok {
got = versionedRow{}
}
if got != tt.want {
t.Errorf("%d. parseRow(%q) = %+v; want %+v", i, tt.row, got, tt.want)
}
}
}
// hasTag checks whether a given release tag is contained in the current version
// of the go binary.
func hasTag(t string) bool {
for _, v := range build.Default.ReleaseTags {
if t == v {
return true
}
}
return false
}
func TestAPIVersion(t *testing.T) {
av, err := parsePackageAPIInfo()
if err != nil {
t.Fatal(err)
}
for _, tc := range []struct {
kind string
pkg string
name string
receiver string
want string
}{
// Things that were added post-1.0 should appear
{"func", "archive/tar", "FileInfoHeader", "", "1.1"},
{"type", "bufio", "Scanner", "", "1.1"},
{"method", "bufio", "WriteTo", "*Reader", "1.1"},
{"func", "bytes", "LastIndexByte", "", "1.5"},
{"type", "crypto", "Decrypter", "", "1.5"},
{"method", "crypto/rsa", "Decrypt", "*PrivateKey", "1.5"},
{"method", "debug/dwarf", "GoString", "Class", "1.5"},
{"func", "os", "IsTimeout", "", "1.10"},
{"type", "strings", "Builder", "", "1.10"},
{"method", "strings", "WriteString", "*Builder", "1.10"},
// Should get the earliest Go version when an identifier
// was initially added, rather than a later version when
// it may have been updated. See issue 44081.
{"func", "os", "Chmod", "", ""}, // Go 1 era function, updated in Go 1.16.
{"method", "os", "Readdir", "*File", ""}, // Go 1 era method, updated in Go 1.16.
{"method", "os", "ReadDir", "*File", "1.16"}, // New to Go 1.16.
// Things from package syscall should never appear
{"func", "syscall", "FchFlags", "", ""},
{"type", "syscall", "Inet4Pktinfo", "", ""},
// Things added in Go 1 should never appear
{"func", "archive/tar", "NewReader", "", ""},
{"type", "archive/tar", "Header", "", ""},
{"method", "archive/tar", "Next", "*Reader", ""},
} {
if tc.want != "" && !hasTag("go"+tc.want) {
continue
}
if got := av.sinceVersionFunc(tc.kind, tc.receiver, tc.name, tc.pkg); got != tc.want {
t.Errorf(`sinceFunc("%s", "%s", "%s", "%s") = "%s"; want "%s"`, tc.kind, tc.receiver, tc.name, tc.pkg, got, tc.want)
}
}
}
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