AlgorithmParameterGenerator3Test.java revision 561ee011997c6c2f1befbfaa9d5f0a99771c1d63 
1/*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements.  See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License.  You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18package org.apache.harmony.security.tests.java.security;
19
20import java.math.BigInteger;
21import java.security.AlgorithmParameterGenerator;
22import java.security.AlgorithmParameters;
23import java.security.InvalidAlgorithmParameterException;
24import java.security.NoSuchProviderException;
25import java.security.Provider;
26import java.security.SecureRandom;
27import java.security.Security;
28import java.security.spec.DSAParameterSpec;
29
30public class AlgorithmParameterGenerator3Test extends junit.framework.TestCase {
31
32	/**
33	 * @tests java.security.AlgorithmParameterGenerator#generateParameters()
34	 */
35	public void test_generateParameters() throws Exception {
36
37		//fail("Takes ages. Problem with SecureRandom and stub math ?");
38
39		// Test for method java.security.AlgorithmParameters
40		// java.security.AlgorithmParameterGenerator.generateParameters()
41		AlgorithmParameterGenerator gen = AlgorithmParameterGenerator
42				.getInstance("DSA");
43		gen.init(1024);
44
45		// WARNING - The next line can take MINUTES to run
46		AlgorithmParameters params = gen.generateParameters();
47		assertNotNull("params is null", params);
48	}
49
50	/**
51	 * @tests java.security.AlgorithmParameterGenerator#getAlgorithm()
52	 */
53	public void test_getAlgorithm() throws Exception {
54		// Test for method java.lang.String
55		// java.security.AlgorithmParameterGenerator.getAlgorithm()
56		String alg = AlgorithmParameterGenerator.getInstance("DSA")
57				.getAlgorithm();
58		assertEquals("getAlgorithm ok", "DSA", alg);
59	}
60
61	/**
62	 * @tests java.security.AlgorithmParameterGenerator#getInstance(java.lang.String)
63	 */
64	public void test_getInstanceLjava_lang_String() throws Exception {
65		// Test for method java.security.AlgorithmParameterGenerator
66		// java.security.AlgorithmParameterGenerator.getInstance(java.lang.String)
67		AlgorithmParameterGenerator.getInstance("DSA");
68	}
69
70	/**
71	 * @tests java.security.AlgorithmParameterGenerator#getInstance(java.lang.String,
72	 *        java.lang.String)
73	 */
74	public void test_getInstanceLjava_lang_StringLjava_lang_String() throws Exception {
75		// Test for method java.security.AlgorithmParameterGenerator
76		// java.security.AlgorithmParameterGenerator.getInstance(java.lang.String,
77		// java.lang.String)
78
79		// Opting for DSA here as it is pretty widely supported
80       		Provider[] provs = Security
81       				.getProviders("AlgorithmParameterGenerator.DSA");
82
83		for (int i = 0; i < provs.length; i++) {
84    			AlgorithmParameterGenerator.getInstance("DSA", provs[i].getName());
85    		}// end for
86
87
88		// exception case - should throw IllegalArgumentException for null
89		// provider
90		try {
91			AlgorithmParameterGenerator.getInstance("DSA", (String) null);
92			fail("Should have thrown IllegalArgumentException");
93		} catch (IllegalArgumentException e) {
94			// Expected
95		}
96
97		// exception case - should throw IllegalArgumentException for empty
98		// provider
99		try {
100			AlgorithmParameterGenerator.getInstance("DSA", "");
101			fail("Should have thrown IllegalArgumentException");
102		} catch (IllegalArgumentException e) {
103			// Expected
104		}
105
106		// exception case - should throw NoSuchProviderException
107		try {
108			AlgorithmParameterGenerator.getInstance("DSA", "IDontExist");
109			fail("Should have thrown NoSuchProviderException");
110		} catch (NoSuchProviderException e) {
111			// Expected
112		}
113	}
114
115	/**
116	 * @tests java.security.AlgorithmParameterGenerator#getProvider()
117	 */
118	public void test_getProvider() throws Exception {
119		// Test for method java.security.Provider
120		// java.security.AlgorithmParameterGenerator.getProvider()
121        	// checks that no exception is thrown
122		Provider p = AlgorithmParameterGenerator.getInstance("DSA")
123				.getProvider();
124		assertNotNull("provider is null", p);
125	}
126
127	/**
128	 * @tests java.security.AlgorithmParameterGenerator#init(int)
129	 */
130	public void test_initI() throws Exception {
131		// Test for method void
132		// java.security.AlgorithmParameterGenerator.init(int)
133        	// checks that no exception is thrown
134		AlgorithmParameterGenerator gen = AlgorithmParameterGenerator
135				.getInstance("DSA");
136		gen.init(1024);
137	}
138
139	/**
140	 * @tests java.security.AlgorithmParameterGenerator#init(int,
141	 *        java.security.SecureRandom)
142	 */
143	public void test_initILjava_security_SecureRandom() throws Exception {
144		// Test for method void
145		// java.security.AlgorithmParameterGenerator.init(int,
146		// java.security.SecureRandom)
147        	// checks that no exception is thrown
148		AlgorithmParameterGenerator gen = AlgorithmParameterGenerator
149				.getInstance("DSA");
150		gen.init(1024, new SecureRandom());
151	}
152
153	/**
154	 * @tests java.security.AlgorithmParameterGenerator#init(java.security.spec.AlgorithmParameterSpec)
155	 */
156	public void test_initLjava_security_spec_AlgorithmParameterSpec() throws Exception {
157        // Test for method void
158        // java.security.AlgorithmParameterGenerator.init(java.security.spec.AlgorithmParameterSpec)
159        // checks that InvalidAlgorithmParameterException is thrown
160        DSAParameterSpec spec = new DSAParameterSpec(BigInteger.ONE,
161                BigInteger.ONE, BigInteger.ONE);
162        AlgorithmParameterGenerator gen = AlgorithmParameterGenerator
163                .getInstance("DSA");
164        try {
165            gen.init(spec);
166            fail("No expected InvalidAlgorithmParameterException");
167        } catch (InvalidAlgorithmParameterException e) {
168            //expected
169        }
170	}
171
172	/**
173	 * @tests java.security.AlgorithmParameterGenerator#init(java.security.spec.AlgorithmParameterSpec,
174	 *        java.security.SecureRandom)
175	 */
176	public void test_initLjava_security_spec_AlgorithmParameterSpecLjava_security_SecureRandom() throws Exception {
177        // Test for method void
178        // java.security.AlgorithmParameterGenerator.init(java.security.spec.AlgorithmParameterSpec,
179        // java.security.SecureRandom)
180        // checks that InvalidAlgorithmParameterException  is thrown
181        DSAParameterSpec spec = new DSAParameterSpec(BigInteger.ONE,
182                BigInteger.ONE, BigInteger.ONE);
183        AlgorithmParameterGenerator gen = AlgorithmParameterGenerator
184                .getInstance("DSA");
185        try {
186            gen.init(spec, new SecureRandom());
187            fail("No expected InvalidAlgorithmParameterException");
188        } catch (InvalidAlgorithmParameterException e) {
189            //expected
190        }
191	}
192}
193