assertResultIsSuccess(branchResult);

        // see https://issues.apache.org/jira/browse/SCM-754
        // assertEquals( "check all 4 files branched", 4, branchResult.getBranchedFiles().size() );

        File readmeTxt = new File(getWorkingCopy(), "readme.txt");

        assertEquals("check readme.txt contents", "/readme.txt", FileUtils.fileRead(readmeTxt));

        this.edit(getWorkingCopy(), "readme.txt", null, getScmRepository());
        changeReadmeTxt(readmeTxt);

        CheckInScmResult checkinResult =
                getScmManager().checkIn(getScmRepository(), new ScmFileSet(getWorkingCopy()), "commit message");

        assertResultIsSuccess(checkinResult);

        CheckOutScmResult checkoutResult =
                getScmManager().checkOut(getScmRepository(), new ScmFileSet(getAssertionCopy()));

        assertResultIsSuccess(checkoutResult);

        readmeTxt = new File(getAssertionCopy(), "readme.txt");

        assertEquals("check readme.txt contents", "changed file", FileUtils.fileRead(readmeTxt));

        deleteDirectory(getAssertionCopy());

        assertFalse("check previous assertion copy deleted", getAssertionCopy().exists());

        checkoutResult = getScmManager()
                .getProviderByUrl(getScmUrl())
                .checkOut(getScmRepository(), new ScmFileSet(getAssertionCopy()), new ScmBranch(branch));