Java TemporaryFolder getRoot() exception

Question

I'm trying to use org.junit.rules.TemporaryFolder in one of my junit to test File I/O. I've initialized it like this:

Code:

 @Rule public TemporaryFolder temporaryFolder; @Before public void setup() { this.temporaryFolder = new TemporaryFolder(); } @After public void tearDown() {} @Test public void testCsvDataFile() throws IOException { File testCsvFile = this.temporaryFolder.newFile("text.csv"); FileWriter csvFileWriter = new FileWriter(testCsvFile); BufferedWriter bufferedWriter = new BufferedWriter(csvFileWriter); bufferedWriter.write("col1,col2,col3\n"); bufferedWriter.write("1,test1,val1\n"); bufferedWriter.write("2,test2,val2\n"); bufferedWriter.close(); Map<Long,Data> data = MyReader.readCSV(testCsvFile); assertTrue(2 == data.size()); }

However, I get an exception:

Exception:

java.lang.IllegalStateException: the temporary folder has not yet been created at org.junit.rules.TemporaryFolder.getRoot(TemporaryFolder.java:127) at org.junit.rules.TemporaryFolder.newFile(TemporaryFolder.java:64)

When I look at the TemporaryFolder code, it uses an internal attribute folder in the function getRoot() that is never set. The constructor sets a different field: parentFolder.

There is a create() method that sets the folder variable but its marked to be for test purposes only.

I am using JDK 1.7. Am I constructing the TemporaryFolder incorrectly? Is there anything else, a system property that needs to be set for this?

Niru · Accepted Answer · 2014-04-03 17:12:37Z

The constructor cannot be called in setup(), and it has to be:

 @Rule public TemporaryFolder temporaryFolder = new TemporaryFolder(); @Before public void setup() {...} @After public void tearDown() {...}

Collectives™ on Stack Overflow

Java TemporaryFolder getRoot() exception

Code:

Exception:

1 Answer 1

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

Code:

Exception:

1 Answer 1

Comments

Linked

Related