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25 package org.slf4j;
26
27 import java.io.PrintStream;
28 import java.util.List;
29 import java.util.Random;
30
31 import junit.framework.TestCase;
32
33 public class IncompatibleMultiBindingAssertionTest extends TestCase {
34
35 StringPrintStream sps = new StringPrintStream(System.err);
36 PrintStream old = System.err;
37 int diff = 1024 + new Random().nextInt(10000);
38
39 public IncompatibleMultiBindingAssertionTest(String name) {
40 super(name);
41 }
42
43 protected void setUp() throws Exception {
44 super.setUp();
45 System.setErr(sps);
46 }
47
48 protected void tearDown() throws Exception {
49 super.tearDown();
50 System.setErr(old);
51 }
52
53 public void test() throws Exception {
54 try {
55 Logger logger = LoggerFactory.getLogger(this.getClass());
56 String msg = "hello world " + diff;
57 logger.info(msg);
58 fail("was expecting NoSuchMethodError");
59 } catch (NoSuchMethodError e) {
60 }
61 List list = sps.stringList;
62 assertMsgContains(list, 0, "Class path contains multiple SLF4J bindings.");
63 assertMsgContains(list, 1, "Found binding in");
64 assertMsgContains(list, 2, "Found binding in");
65 assertMsgContains(list, 3, "See http://www.slf4j.org/codes.html");
66 assertMsgContains(list, 4,
67 "slf4j-api 1.6.x (or later) is incompatible with this binding");
68 assertMsgContains(list, 5, "Your binding is version 1.5.5 or earlier.");
69
70 }
71
72 void assertMsgContains(List strList, int index, String msg) {
73 assertTrue(((String) strList.get(index)).contains(msg));
74 }
75 }