/**
* Create a chain of commits of given depth.
*
* <p>Each commit contains one file named "a" containing the index of the commit in the chain as
* its content. The created commit chain is referenced from any ref.
*
* <p>A chain of depth = N will create 3*N objects in Gits object database. For each depth level
* three objects are created: the commit object, the top-level tree object and a blob for the
* content of the file "a".
*
* @param depth the depth of the commit chain.
* @return the commit that is the tip of the commit chain
* @throws Exception
*/
protected RevCommit commitChain(int depth) throws Exception {
if (depth <= 0) throw new IllegalArgumentException("Chain depth must be > 0");
CommitBuilder cb = tr.commit();
RevCommit tip;
do {
--depth;
tip = cb.add("a", "" + depth).message("" + depth).create();
cb = cb.child();
} while (depth > 0);
return tip;
}
/**
* Create a chain of commits of given depth with given number of added files per commit.
*
* <p>Each commit contains {@code files} files as its content. The created commit chain is
* referenced from any ref.
*
* <p>A chain will create {@code (2 + files) * depth} objects in Gits object database. For each
* depth level the following objects are created: the commit object, the top-level tree object
* and @code files} blobs for the content of the file "a".
*
* @param depth the depth of the commit chain.
* @param width number of files added per commit
* @return the commit that is the tip of the commit chain
* @throws Exception
*/
protected RevCommit commitChain(int depth, int width) throws Exception {
if (depth <= 0) {
throw new IllegalArgumentException("Chain depth must be > 0");
}
if (width <= 0) {
throw new IllegalArgumentException("Number of files per commit must be > 0");
}
CommitBuilder cb = tr.commit();
RevCommit tip = null;
do {
--depth;
for (int i = 0; i < width; i++) {
String id = depth + "-" + i;
cb.add("a" + id, id).message(id);
}
tip = cb.create();
cb = cb.child();
} while (depth > 0);
return tip;
}