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Java

Shaun Wetzel
Shaun Wetzel
9,085 Points
Posted by Shaun Wetzel
Shaun Wetzel
9,085 Points

Error during attempting to create submission

Using the housing dataset, let's produce a menu of all states represented in the data. Challenge in Using range to Produce a Menu.

running the code works but when going to create the submission it fails a test, here is the code

public static List<String> getStateCodesFromRecords(List<HousingRecord> records) {
    return records.stream()
      .map(HousingRecord::getState)
      .filter(String::isEmpty)
      .distinct()
      .sorted()
      .collect(Collectors.toList());
  }

public static void displayStateCodeMenuDeclaratively(List<String> stateCodes) {
    IntStream.rangeClosed(1, stateCodes.size())
      .mapToObj(i -> String.format("%d. %s %n", i, stateCodes.get(i - 1)))
      .forEach(System.out::println);
  }

here are the errors.

11:13:36 AM: Executing task 'prepareSubmission'...

:compileJava
:processResources UP-TO-DATE
:classes
:compileTestJava UP-TO-DATE
:processTestResources NO-SOURCE
:testClasses UP-TO-DATE
:test

com.teamtreehouse.challenges.homes.MainTest > stateCodesAreSorted FAILED
    java.lang.AssertionError: Did you forget to sort the stream in the method 'getStateCodesFromRecords'
    Expected: iterable containing ["AZ", "WY"]
         but: item 0: was ""
        at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)
        at org.junit.Assert.assertThat(Assert.java:865)
        at com.teamtreehouse.challenges.homes.MainTest.stateCodesAreSorted(MainTest.java:130)

10 tests completed, 1 failed
:test FAILED
4 actionable tasks: 2 executed, 2 up-to-date

FAILURE: Build failed with an exception.

as you can see in the getStateCodesFromRecords method stream i did .sorted() and even played around with some parameters in .sorted() with no luck.

1 Answer

Juan Jaramillo
Juan Jaramillo
5,482 Points
Juan Jaramillo
Juan Jaramillo
5,482 Points

You're using .filter() and checking for Strings that are empy with the String::isEmpty method. A simple change to that and it should work. You should check for Strings that are NOT empty, you're doing the opposite.

Shaun Wetzel
Shaun Wetzel
9,085 Points
Shaun Wetzel
Shaun Wetzel
9,085 Points

changed it to .filter(String -> !String.isEmpty())

and now the build works thank you!