Here's one simple approach for checking if the files are exactly the same:
assertEquals("The files differ!",
FileUtils.readFileToString(file1, "utf-8"),
FileUtils.readFileToString(file2, "utf-8"));
Where file1
and file2
are File
instances, and FileUtils
is from Apache Commons IO.
Not much own code for you to maintain, which is always a plus. :) And very easy if you already happen to use Apache Commons in your project. But no nice, detailed error messages like in mark's solution.
Edit:
Heh, looking closer at the FileUtils
API, there's an even simpler way:
assertTrue("The files differ!", FileUtils.contentEquals(file1, file2));
As a bonus, this version works for all files, not just text.
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