Simple NextableInputStream

[fanfix.git] / src / be / nikiroo / utils / test_code / NextableInputStreamTest.java

diff --git a/src/be/nikiroo/utils/test_code/NextableInputStreamTest.java b/src/be/nikiroo/utils/test_code/NextableInputStreamTest.java
index 51ff128e5dc97e2ff104a6fb40da84c4eb2a10d9..b5f6780351512ed425fd7e00f060bd7a696126df 100644 (file)
--- a/src/be/nikiroo/utils/test_code/NextableInputStreamTest.java
+++ b/src/be/nikiroo/utils/test_code/NextableInputStreamTest.java
@@ -1,7 +1,6 @@
 package be.nikiroo.utils.test_code;
 
 import java.io.ByteArrayInputStream;
-import java.io.InputStream;
 
 import be.nikiroo.utils.IOUtils;
 import be.nikiroo.utils.NextableInputStream;
@@ -17,8 +16,8 @@ public class NextableInputStreamTest extends TestLauncher {
                        @Override
                        public void test() throws Exception {
                                byte[] expected = new byte[] { 42, 12, 0, 127 };
-                               InputStream bin = new ByteArrayInputStream(expected);
-                               NextableInputStream in = new NextableInputStream(bin);
+                               NextableInputStream in = new NextableInputStream(
+                                               new ByteArrayInputStream(expected), null);
                                byte[] actual = IOUtils.toByteArray(in);
 
                                assertEquals(
@@ -35,61 +34,62 @@ public class NextableInputStreamTest extends TestLauncher {
                        @Override
                        public void test() throws Exception {
                                byte[] expected = new byte[] { 42, 12, 0, 127 };
-                               InputStream bin = new ByteArrayInputStream(expected);
-                               NextableInputStream in = new NextableInputStream(bin);
-                               in.addStep(new NextableInputStreamStep(12));
-                               byte[] actual = IOUtils.toByteArray(in);
+                               NextableInputStream in = new NextableInputStream(
+                                               new ByteArrayInputStream(expected),
+                                               new NextableInputStreamStep(12));
 
-                               assertEquals(
-                                               "The resulting array has not the correct number of items",
-                                               1, actual.length);
-                               for (int i = 0; i < actual.length; i++) {
-                                       assertEquals("Item " + i + " (0-based) is not the same",
-                                                       expected[i], actual[i]);
-                               }
+                               checkNext(this, false, "FIRST", in, new byte[] { 42 });
                        }
                });
 
                addTest(new TestCase("Stop at 12, resume, stop again, resume") {
                        @Override
                        public void test() throws Exception {
-                               byte[] expected = new byte[] { 42, 12, 0, 127, 12, 51, 11, 12 };
+                               byte[] data = new byte[] { 42, 12, 0, 127, 12, 51, 11, 12 };
                                NextableInputStream in = new NextableInputStream(
-                                               new ByteArrayInputStream(expected));
-                               in.addStep(new NextableInputStreamStep(12));
+                                               new ByteArrayInputStream(data),
+                                               new NextableInputStreamStep(12));
 
-                               byte[] actual1 = IOUtils.toByteArray(in);
-                               byte[] expected1 = new byte[] { 42 };
-                               assertEquals(
-                                               "The FIRST resulting array has not the correct number of items",
-                                               expected1.length, actual1.length);
-                               for (int i = 0; i < actual1.length; i++) {
-                                       assertEquals("Item " + i + " (0-based) is not the same",
-                                                       expected1[i], actual1[i]);
-                               }
+                               checkNext(this, false, "FIRST", in, new byte[] { 42 });
+                               checkNext(this, true, "SECOND", in, new byte[] { 0, 127 });
+                               checkNext(this, true, "THIRD", in, new byte[] { 51, 11 });
+                       }
+               });
 
-                               assertEquals("Cannot get SECOND entry", true, in.next());
-                               byte[] actual2 = IOUtils.toByteArray(in);
-                               byte[] expected2 = new byte[] { 0, 127 };
-                               assertEquals(
-                                               "The SECOND resulting array has not the correct number of items",
-                                               expected2.length, actual2.length);
-                               for (int i = 0; i < actual2.length; i++) {
-                                       assertEquals("Item " + i + " (0-based) is not the same",
-                                                       expected2[i], actual2[i]);
-                               }
+               addTest(new TestCase("Encapsulation") {
+                       @Override
+                       public void test() throws Exception {
+                               byte[] data = new byte[] { 42, 12, 0, 4, 127, 12, 5 };
+                               NextableInputStream in4 = new NextableInputStream(
+                                               new ByteArrayInputStream(data),
+                                               new NextableInputStreamStep(4));
+                               NextableInputStream subIn12 = new NextableInputStream(in4,
+                                               new NextableInputStreamStep(12));
 
-                               assertEquals("Cannot get next THIRD entry", true, in.next());
-                               byte[] actual3 = IOUtils.toByteArray(in);
-                               byte[] expected3 = new byte[] { 51, 11 };
-                               assertEquals(
-                                               "The THIRD resulting array has not the correct number of items",
-                                               expected3.length, actual3.length);
-                               for (int i = 0; i < actual3.length; i++) {
-                                       assertEquals("Item " + i + " (0-based) is not the same",
-                                                       expected3[i], actual3[i]);
-                               }
+                               checkNext(this, false, "SUB FIRST", subIn12, new byte[] { 42 });
+                               checkNext(this, true, "SUB SECOND", subIn12, new byte[] { 0 });
+
+                               assertEquals("The subIn still has some data", false,
+                                               subIn12.next());
+                               
+                               checkNext(this, true, "MAIN LAST", in4, new byte[] { 127, 12, 5 });
                        }
                });
        }
+
+       static void checkNext(TestCase test, boolean callNext, String prefix,
+                       NextableInputStream in, byte[] expected) throws Exception {
+               if (callNext) {
+                       test.assertEquals("Cannot get " + prefix + " entry", true,
+                                       in.next());
+               }
+               byte[] actual = IOUtils.toByteArray(in);
+               test.assertEquals("The " + prefix
+                               + " resulting array has not the correct number of items",
+                               expected.length, actual.length);
+               for (int i = 0; i < actual.length; i++) {
+                       test.assertEquals("Item " + i + " (0-based) is not the same",
+                                       expected[i], actual[i]);
+               }
+       }
 }