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BAEL-5712: Improvement in Listing files under directory (#12643)

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Co-authored-by: Harpal Singh <harpal.singh@kaleyra.com>
This commit is contained in:
Harry9656
2022-09-08 22:48:29 +02:00
committed by GitHub
parent 575c2be85a
commit f39cb4b77a
2 changed files with 58 additions and 47 deletions
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62
core-java-modules/core-java-io-2/src/test/java/com/baeldung/listfiles/ListFilesUnitTest.java
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@@ -1,21 +1,21 @@
package com.baeldung.listfiles;
import static org.junit.Assert.assertEquals;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
import org.junit.Test;
import com.baeldung.listfiles.ListFiles;
import java.io.IOException;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
import static org.junit.Assert.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;
public class ListFilesUnitTest {
private ListFiles listFiles = new ListFiles();
private String DIRECTORY = "src/test/resources/listFilesUnitTestFolder";
private static final int DEPTH = 1;
private Set<String> EXPECTED_FILE_LIST = new HashSet<String>() {
private static final String VALID_DIRECTORY = "src/test/resources/listFilesUnitTestFolder";
private static final String INVALID_DIRECTORY = "src/test/resources/thisDirectoryDoesNotExist";
private static final Set<String> EXPECTED_FILE_SET = new HashSet<String>() {
{
add("test.xml");
add("employee.json");
@@ -23,29 +23,49 @@ public class ListFilesUnitTest {
add("country.txt");
}
};
private static final int DEPTH = 1;
private final ListFiles listFiles = new ListFiles();
@Test
public void givenDir_whenUsingJAVAIO_thenListAllFiles() {
assertEquals(EXPECTED_FILE_LIST, listFiles.listFilesUsingJavaIO(DIRECTORY));
public void givenAValidDirectoryWhenUsingJavaIOThenReturnSetOfFileNames() {
assertThat(listFiles.listFilesUsingJavaIO(VALID_DIRECTORY))
.isEqualTo(EXPECTED_FILE_SET);
}
@Test
public void givenDir_whenUsingFilesList_thenListAllFiles() throws IOException {
assertEquals(EXPECTED_FILE_LIST, listFiles.listFilesUsingFilesList(DIRECTORY));
public void givenAInvalidValidDirectoryWhenUsingJavaIOThenThrowsNullPointerExceptino() {
assertThrows(NullPointerException.class,
() -> listFiles.listFilesUsingJavaIO(INVALID_DIRECTORY));
}
@Test
public void givenDir_whenWalkingTree_thenListAllFiles() throws IOException {
assertEquals(EXPECTED_FILE_LIST, listFiles.listFilesUsingFileWalk(DIRECTORY,DEPTH));
public void givenAValidDirectoryWhenUsingFilesListThenReturnSetOfFileNames() throws IOException {
assertThat(listFiles.listFilesUsingFilesList(VALID_DIRECTORY))
.isEqualTo(EXPECTED_FILE_SET);
}
@Test
public void givenDir_whenWalkingTreeWithVisitor_thenListAllFiles() throws IOException {
assertEquals(EXPECTED_FILE_LIST, listFiles.listFilesUsingFileWalkAndVisitor(DIRECTORY));
public void givenAValidDirectoryWhenUsingFilesWalkWithDepth1ThenReturnSetOfFileNames() throws IOException {
assertThat(listFiles.listFilesUsingFileWalk(VALID_DIRECTORY, DEPTH))
.isEqualTo(EXPECTED_FILE_SET);
}
@Test
public void givenDir_whenUsingDirectoryStream_thenListAllFiles() throws IOException {
assertEquals(EXPECTED_FILE_LIST, listFiles.listFilesUsingDirectoryStream(DIRECTORY));
public void givenAValidDirectoryWhenUsingFilesWalkFileTreeThenReturnSetOfFileNames() throws IOException {
assertThat(listFiles.listFilesUsingFileWalkAndVisitor(VALID_DIRECTORY))
.isEqualTo(EXPECTED_FILE_SET);
}
@Test
public void givenAValidDirectoryWhenUsingDirectoryStreamThenReturnSetOfFileNames() throws IOException {
assertThat(listFiles.listFilesUsingDirectoryStream(VALID_DIRECTORY))
.isEqualTo(EXPECTED_FILE_SET);
}
@Test
public void givenAValidFileWhenUsingFilesWalkWithDepth1ThenReturnSetOfTheSameFile() throws IOException {
Set<String> expectedFileSet = Collections.singleton("test.xml");
String filePathString = "src/test/resources/listFilesUnitTestFolder/test.xml";
assertEquals(expectedFileSet, listFiles.listFilesUsingFileWalk(filePathString, DEPTH));
}
}