Add test for FileChannels.contentEquals.

[smarkwal]

The test in this PR uses FileChannels.contentEquals to compare the content of two files. Both files have the same size of 1027 bytes. While the content of file 1 starts with "ABC", the content of file 2 starts with "XYZ". Both files then contain additional identical 1024 bytes (1024 x character "x"). The two files should be considered having different content.

If FileChannels.contentEquals is invoked with a buffer size of 1024 bytes, it will return true (content is equal) instead of the expected false (content is different).

If calling the method with a buffer size of 1023 bytes (just 1 byte less), then the method will return the correct result false.

[garydgregory]

Hello @smarkwal
Thank you for the test.
Would you please add the Apache license header to the new file?

[smarkwal]

Hi @garydgregory

I have added the license header and also applied a code style that seems to be used in this project. I was not able to find an .editorconfig file or similar. But I found this CodeStyle wiki page and looked at some other source files for clues.

[garydgregory]

Hello @smarkwal,

Thank you for your update. Please test git master or a build from the Apache Maven snapshot repository.

I did not merge this PR since it would fail the build; instead, I expanded the test, and committed a fix at the same time.

You are credited in changes.xml.

[smarkwal]

Hi @garydgregory,

Thank you very much for the quick fix and improving the test. I have been able to use 2.15.1-SNAPSHOT without problems in my project. I also did some more extensive testing and the new implementation has worked perfectly. I will close this PR.

Best,
Ste

[garydgregory]

👍