Josh Rosen created SPARK-7714:
---------------------------------

             Summary: SparkR tests should use more specific expectations than 
expect_true
                 Key: SPARK-7714
                 URL: https://issues.apache.org/jira/browse/SPARK-7714
             Project: Spark
          Issue Type: Improvement
          Components: SparkR
            Reporter: Josh Rosen


SparkR's test use testthat's {{expect_true(foo == bar)}}, but using 
expectations like {{expect_equal(foo, bar)}} will give informative error 
messages if the assertion fails.  We should update the existing tests to use 
the more specific matchers, such as expect_equal, expect_is, expect_identical, 
expect_error, etc.

See http://r-pkgs.had.co.nz/tests.html for more documentation on testtthat 
expectation functions.



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