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// Copyright 2013 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 x509
import (
"runtime"
"testing"
"time"
)
func TestSystemRoots(t *testing.T) {
switch runtime.GOARCH {
case "arm", "arm64":
t.Skipf("skipping on %s/%s, no system root", runtime.GOOS, runtime.GOARCH)
}
t0 := time.Now()
sysRoots := systemRootsPool() // actual system roots
sysRootsDuration := time.Since(t0)
t1 := time.Now()
execRoots, err := execSecurityRoots() // non-cgo roots
execSysRootsDuration := time.Since(t1)
if err != nil {
t.Fatalf("failed to read system roots: %v", err)
}
t.Logf(" cgo sys roots: %v", sysRootsDuration)
t.Logf("non-cgo sys roots: %v", execSysRootsDuration)
for _, tt := range []*CertPool{sysRoots, execRoots} {
if tt == nil {
t.Fatal("no system roots")
}
// On Mavericks, there are 212 bundled certs, at least
// there was at one point in time on one machine.
// (Maybe it was a corp laptop with extra certs?)
// Other OS X users report
// 135, 142, 145... Let's try requiring at least 100,
// since this is just a sanity check.
t.Logf("got %d roots", len(tt.certs))
if want, have := 100, len(tt.certs); have < want {
t.Fatalf("want at least %d system roots, have %d", want, have)
}
}
// Check that the two cert pools are roughly the same;
// |A∩B| > max(|A|, |B|) / 2 should be a reasonably robust check.
isect := make(map[string]bool, len(sysRoots.certs))
for _, c := range sysRoots.certs {
isect[string(c.Raw)] = true
}
have := 0
for _, c := range execRoots.certs {
if isect[string(c.Raw)] {
have++
}
}
var want int
if nsys, nexec := len(sysRoots.certs), len(execRoots.certs); nsys > nexec {
want = nsys / 2
} else {
want = nexec / 2
}
if have < want {
t.Errorf("insufficient overlap between cgo and non-cgo roots; want at least %d, have %d", want, have)
}
}
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