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| 1 | +/* |
| 2 | + * Copyright 2026 Google LLC |
| 3 | + * |
| 4 | + * Redistribution and use in source and binary forms, with or without |
| 5 | + * modification, are permitted provided that the following conditions are |
| 6 | + * met: |
| 7 | + * |
| 8 | + * * Redistributions of source code must retain the above copyright |
| 9 | + * notice, this list of conditions and the following disclaimer. |
| 10 | + * * Redistributions in binary form must reproduce the above |
| 11 | + * copyright notice, this list of conditions and the following disclaimer |
| 12 | + * in the documentation and/or other materials provided with the |
| 13 | + * distribution. |
| 14 | + * |
| 15 | + * * Neither the name of Google LLC nor the names of its |
| 16 | + * contributors may be used to endorse or promote products derived from |
| 17 | + * this software without specific prior written permission. |
| 18 | + * |
| 19 | + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 20 | + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 21 | + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 22 | + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 23 | + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 24 | + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 25 | + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 26 | + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 27 | + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 28 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 29 | + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 30 | + */ |
| 31 | + |
| 32 | +package com.google.auth.mtls; |
| 33 | + |
| 34 | +import static org.junit.jupiter.api.Assertions.assertEquals; |
| 35 | +import static org.junit.jupiter.api.Assertions.assertFalse; |
| 36 | +import static org.junit.jupiter.api.Assertions.assertNotNull; |
| 37 | +import static org.junit.jupiter.api.Assertions.assertThrows; |
| 38 | +import static org.junit.jupiter.api.Assertions.assertTrue; |
| 39 | + |
| 40 | +import com.google.api.client.http.javanet.NetHttpTransport; |
| 41 | +import java.io.File; |
| 42 | +import java.io.FileInputStream; |
| 43 | +import java.security.KeyStore; |
| 44 | +import java.security.cert.Certificate; |
| 45 | +import java.security.cert.CertificateFactory; |
| 46 | +import org.junit.jupiter.api.Test; |
| 47 | + |
| 48 | +class MtlsHttpTransportFactoryTest { |
| 49 | + |
| 50 | + private static final String TEST_CERT_PATH = "testresources/mtls/test_cert.pem"; |
| 51 | + |
| 52 | + @Test |
| 53 | + void hasKeyStore_noArgConstructor_returnsFalse() { |
| 54 | + MtlsHttpTransportFactory factory = new MtlsHttpTransportFactory(); |
| 55 | + assertFalse(factory.hasKeyStore()); |
| 56 | + } |
| 57 | + |
| 58 | + @Test |
| 59 | + void hasKeyStore_emptyKeyStore_returnsFalse() throws Exception { |
| 60 | + KeyStore emptyKeyStore = KeyStore.getInstance(KeyStore.getDefaultType()); |
| 61 | + emptyKeyStore.load(null, null); |
| 62 | + assertEquals(0, emptyKeyStore.size()); |
| 63 | + |
| 64 | + MtlsHttpTransportFactory factory = new MtlsHttpTransportFactory(emptyKeyStore); |
| 65 | + assertFalse(factory.hasKeyStore()); |
| 66 | + } |
| 67 | + |
| 68 | + @Test |
| 69 | + void hasKeyStore_populatedKeyStore_returnsTrue() throws Exception { |
| 70 | + KeyStore populatedKeyStore = KeyStore.getInstance(KeyStore.getDefaultType()); |
| 71 | + populatedKeyStore.load(null, null); |
| 72 | + |
| 73 | + CertificateFactory cf = CertificateFactory.getInstance("X.509"); |
| 74 | + try (FileInputStream fis = new FileInputStream(new File(TEST_CERT_PATH))) { |
| 75 | + Certificate cert = cf.generateCertificate(fis); |
| 76 | + populatedKeyStore.setCertificateEntry("test-alias", cert); |
| 77 | + } |
| 78 | + assertEquals(1, populatedKeyStore.size()); |
| 79 | + |
| 80 | + MtlsHttpTransportFactory factory = new MtlsHttpTransportFactory(populatedKeyStore); |
| 81 | + assertTrue(factory.hasKeyStore()); |
| 82 | + } |
| 83 | + |
| 84 | + @Test |
| 85 | + void hasKeyStore_uninitializedKeyStore_returnsFalse() throws Exception { |
| 86 | + KeyStore uninitializedKeyStore = KeyStore.getInstance(KeyStore.getDefaultType()); |
| 87 | + // KeyStore.size() on uninitialized KeyStore throws KeyStoreException |
| 88 | + MtlsHttpTransportFactory factory = new MtlsHttpTransportFactory(uninitializedKeyStore); |
| 89 | + assertFalse(factory.hasKeyStore()); |
| 90 | + } |
| 91 | + |
| 92 | + @Test |
| 93 | + void constructor_nullKeyStore_throwsNullPointerException() { |
| 94 | + assertThrows(NullPointerException.class, () -> new MtlsHttpTransportFactory(null)); |
| 95 | + } |
| 96 | + |
| 97 | + @Test |
| 98 | + void create_returnsNetHttpTransport() throws Exception { |
| 99 | + KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType()); |
| 100 | + keyStore.load(null, null); |
| 101 | + |
| 102 | + MtlsHttpTransportFactory factory = new MtlsHttpTransportFactory(keyStore); |
| 103 | + NetHttpTransport transport = factory.create(); |
| 104 | + assertNotNull(transport); |
| 105 | + } |
| 106 | +} |
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