1 files changed, 108 insertions, 0 deletions
diff --git a/src/crypto/x509/cert_pool_test.go b/src/crypto/x509/cert_pool_test.go
new file mode 100644
index 0000000..a12beda
--- /dev/null
+++ b/src/crypto/x509/cert_pool_test.go
@@ -0,0 +1,108 @@
+// Copyright 2022 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 "testing"
+
+func TestCertPoolEqual(t *testing.T) {
+	tc := &Certificate{Raw: []byte{1, 2, 3}, RawSubject: []byte{2}}
+	otherTC := &Certificate{Raw: []byte{9, 8, 7}, RawSubject: []byte{8}}
+
+	emptyPool := NewCertPool()
+	nonSystemPopulated := NewCertPool()
+	nonSystemPopulated.AddCert(tc)
+	nonSystemPopulatedAlt := NewCertPool()
+	nonSystemPopulatedAlt.AddCert(otherTC)
+	emptySystem, err := SystemCertPool()
+	if err != nil {
+		t.Fatal(err)
+	}
+	populatedSystem, err := SystemCertPool()
+	if err != nil {
+		t.Fatal(err)
+	}
+	populatedSystem.AddCert(tc)
+	populatedSystemAlt, err := SystemCertPool()
+	if err != nil {
+		t.Fatal(err)
+	}
+	populatedSystemAlt.AddCert(otherTC)
+	tests := []struct {
+		name  string
+		a     *CertPool
+		b     *CertPool
+		equal bool
+	}{
+		{
+			name:  "two empty pools",
+			a:     emptyPool,
+			b:     emptyPool,
+			equal: true,
+		},
+		{
+			name:  "one empty pool, one populated pool",
+			a:     emptyPool,
+			b:     nonSystemPopulated,
+			equal: false,
+		},
+		{
+			name:  "two populated pools",
+			a:     nonSystemPopulated,
+			b:     nonSystemPopulated,
+			equal: true,
+		},
+		{
+			name:  "two populated pools, different content",
+			a:     nonSystemPopulated,
+			b:     nonSystemPopulatedAlt,
+			equal: false,
+		},
+		{
+			name:  "two empty system pools",
+			a:     emptySystem,
+			b:     emptySystem,
+			equal: true,
+		},
+		{
+			name:  "one empty system pool, one populated system pool",
+			a:     emptySystem,
+			b:     populatedSystem,
+			equal: false,
+		},
+		{
+			name:  "two populated system pools",
+			a:     populatedSystem,
+			b:     populatedSystem,
+			equal: true,
+		},
+		{
+			name:  "two populated pools, different content",
+			a:     populatedSystem,
+			b:     populatedSystemAlt,
+			equal: false,
+		},
+		{
+			name:  "two nil pools",
+			a:     nil,
+			b:     nil,
+			equal: true,
+		},
+		{
+			name:  "one nil pool, one empty pool",
+			a:     nil,
+			b:     emptyPool,
+			equal: false,
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			equal := tc.a.Equal(tc.b)
+			if equal != tc.equal {
+				t.Errorf("Unexpected Equal result: got %t, want %t", equal, tc.equal)
+			}
+		})
+	}
+}