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Add tests for RawTextComparator.WS_IGNORE_CHANGE.hash() 

Change-Id: I1ed4df789094e09c39b3c2054fe5b9bd0c1a8f9b
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
This commit is contained in:
Thomas Wolf 2020-05-28 19:40:01 +02:00 committed by Matthias Sohn
parent ae2e12d584
commit 55371c5f06
1 changed files with 44 additions and 0 deletions
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44
org.eclipse.jgit.test/tst/org/eclipse/jgit/diff/RawTextIgnoreWhitespaceChangeTest.java
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@ -13,6 +13,7 @@
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertTrue;
import org.eclipse.jgit.lib.Constants;
@ -103,4 +104,47 @@ public void testEqualsWithTabs() {
assertTrue(cmp.equals(a, 4, b, 4));
assertTrue(cmp.equals(b, 4, a, 4));
}
@Test
public void testHashCode() {
RawText a = new RawText(Constants
.encodeASCII("a b c\n\nab c d \n\ta bc d\nxyz\na b c"));
RawText b = new RawText(Constants.encodeASCII(
"a b c\na b c\nab c d\na bc d\n \t a bc d\na b c\n"));
// Same line gives equal hash
assertEquals(cmp.hash(a, 0), cmp.hash(a, 0));
// Empty lines produce the same hash
assertEquals(cmp.hash(a, 1), cmp.hash(a, 1));
// Equal lines from different RawTexts get the same hash (RawText
// instance is not part of the hash)
assertEquals(cmp.hash(a, 0), cmp.hash(b, 0));
// A blank produces the same hash as a TAB
assertEquals(cmp.hash(new RawText(Constants.encodeASCII(" ")), 0),
cmp.hash(new RawText(Constants.encodeASCII("\t")), 0));
// Lines with only differing whitespace produce same hash
assertEquals(cmp.hash(a, 0), cmp.hash(b, 1));
// Lines with different trailing whitespace produce the same hash
assertEquals(cmp.hash(a, 2), cmp.hash(b, 2));
// A line with leading whitespace produces a hash different from the
// same line without leading whitespace
assertNotEquals(cmp.hash(a, 3), cmp.hash(b, 3));
// Lines with different leading whitespace produce equal hashes
assertEquals(cmp.hash(a, 3), cmp.hash(b, 4));
// While different lines _should_ produce different hashes, that may not
// always be the case. But for these two lines, it is.
assertNotEquals(cmp.hash(a, 4), cmp.hash(b, 4));
// A line without trailing \n produces the same hash as one without
assertEquals(cmp.hash(a, 5), cmp.hash(b, 5));
}
}