A JUnit extension to run tests with piping file inputs to STDIN and validation against STDOUT.
This can be useful for example when writing solutions as unit tests for coding challenges such as on HackerRank.
Example:
@RunWith(StdioSuite.class)
@StdioInputs({"000", "001"})
public class ToUpperTest {
@Test
public void testToUpper() throws Exception {
BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
String line = "";
while ((line = stdin.readLine()) != null){
System.out.println(line.toUpperCase());
}
}
}
JUnit will run testToUpper() two times based on the @StdioInputs annotation.
The test runner first reads in input000.txt, pipes it to STDIN of the test and then compares its STDOUT to output000.txt.
Then, the same is done for input001.txt and output001.txt respectively. The files are read as resources
from the CLASSPATH in the same package where the class under test is located.
See also the unit test that comes with this project.
Available on Maven Central.
Copyright 2015 Gergely Nagy greg@webhejj.hu
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.