How to use FileOperationsTest class of org.testcontainers.junit package

Best Testcontainers-java code snippet using org.testcontainers.junit.FileOperationsTest

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...8import org.testcontainers.utility.MountableFile;9import java.io.File;10import java.io.IOException;11import static org.rnorth.visibleassertions.VisibleAssertions.assertTrue;12public class FileOperationsTest {13 @Rule14 public TemporaryFolder temporaryFolder = new TemporaryFolder();15 @Test16 public void copyFileToContainerFileTest() throws Exception {17 try (18 GenericContainer alpineCopyToContainer = new GenericContainer("alpine:3.2")19 .withCommand("top")20 ) {21 alpineCopyToContainer.start();22 final MountableFile mountableFile = MountableFile.forClasspathResource("test_copy_to_container.txt");23 alpineCopyToContainer.copyFileToContainer(mountableFile, "/​test.txt");24 File actualFile = new File(temporaryFolder.getRoot().getAbsolutePath() + "/​test_copy_to_container.txt");25 alpineCopyToContainer.copyFileFromContainer("/​test.txt", actualFile.getPath());26 File expectedFile = new File(mountableFile.getResolvedPath());...

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FileOperationsTest

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1public class FileOperationsTest {2 public GenericContainer container = new GenericContainer("alpine:3.8")3 .withCommand("tail", "-f", "/​dev/​null")4 .withFileSystemBind("src/​test/​resources", "/​test-classes", BindMode.READ_ONLY);5 public void testCopyFileFromContainer() throws IOException {6 FileOperations fileOperations = new FileOperations(container.getDockerClient(), container.getContainerId());7 String fileContent = fileOperations.readFile("/​test-classes/​test.txt");8 assertEquals("test file content", fileContent);9 }10}11 at org.rnorth.ducttape.unreliables.Unreliables.retryUntilSuccess(Unreliables.java:86)12 at org.testcontainers.containers.GenericContainer.copyFileFromContainer(GenericContainer.java:1029)13 at org.testcontainers.containers.FileOperations.readFile(FileOperations.java:54)14 at org.testcontainers.containers.FileOperationsTest.testCopyFileFromContainer(FileOperationsTest.java:24)15The reason is that the file is not available at the time of the first call to fileOperations.readFile("/​test-classes/​test.txt") . The file is copied to the container asynchronously, so we need to wait for it to be available. We can do this by using the waitUntilFileExists method:16public class FileOperationsTest {17 public GenericContainer container = new GenericContainer("alpine:3.8")18 .withCommand("tail", "-f", "/​dev/​null")19 .withFileSystemBind("src/​test/​resources", "/​test-classes", BindMode.READ_ONLY)20 .waitingFor(Wait.forLogMessage(".*Copied 1 files.*\\n", 1));21 public void testCopyFileFromContainer() throws IOException {22 FileOperations fileOperations = new FileOperations(container.getDockerClient(), container.getContainerId());23 String fileContent = fileOperations.readFile("/​test-classes/​test.txt");24 assertEquals("test file content", fileContent);25 }26}

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FileOperationsTest

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1import org.junit.Test;2import org.testcontainers.containers.GenericContainer;3import org.testcontainers.shaded.org.apache.commons.io.IOUtils;4import java.io.File;5import java.io.FileInputStream;6import java.io.FileOutputStream;7import java.io.InputStream;8import java.nio.charset.Charset;9public class FileOperationsTest {10 public void testFileOperations() throws Exception {11 String fileName = "testFile.txt";12 String fileContent = "Hello World";13 try(GenericContainer container = new GenericContainer("alpine:3.7")) {14 container.start();15 container.copyFileToContainer(16 Transferable.of(fileContent.getBytes(), 777),17 fileName);18 String containerFileContent = container.copyFileFromContainer(fileName, System.out);19 System.out.println(containerFileContent);20 container.execInContainer("rm", fileName);21 }22 }23}24import org.junit.Test;25import org.testcontainers.containers.GenericContainer;26import org.testcontainers.shaded.org.apache.commons.io.IOUtils;27import java.io.File;28import java.io.FileInputStream;29import java.io.FileOutputStream;30import java.io.InputStream;31import java.nio.charset.Charset;32public class FileOperationsTest {33 public void testFileOperations() throws Exception {34 String fileName = "testFile.txt";35 String fileContent = "Hello World";36 try(GenericContainer container = new GenericContainer("alpine:3.7")) {37 container.start();38 container.copyFileToContainer(39 Transferable.of(fileContent.getBytes(), 777),40 fileName);41 String containerFileContent = container.copyFileFromContainer(fileName, System.out);42 System.out.println(containerFileContent);43 container.execInContainer("rm", fileName);44 }45 }46}

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