How to use writes_reads_files method of org.mockito.internal.util.io.IOUtilTest class

Best Mockito code snippet using org.mockito.internal.util.io.IOUtilTest.writes_reads_files

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...20 IOUtil.close(null);21 IOUtil.close(new ByteArrayOutputStream());22 }23 @Test24 public void writes_reads_files() throws Exception {25 File file = tmp.newFile();26 IOUtil.writeText("foo\n\nbar", file);27 assertEquals(asList("foo", "", "bar"), IOUtil.readLines(new FileInputStream(file)));28 }29}

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writes_reads_files

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1 public void testWritesReadsFiles() throws IOException {2 File tempFile = File.createTempFile("temp", "txt");3 tempFile.deleteOnExit();4 IOUtil.writeText("foo", tempFile);5 assertEquals("foo", IOUtil.readText(tempFile));6 }7 public void testWritesReadsFiles() throws IOException {8 File tempFile = File.createTempFile("temp", "txt");9 tempFile.deleteOnExit();10 IOUtil.writeText("foo", tempFile);11 assertEquals("foo", IOUtil.readText(tempFile));12 }13 public void testWritesReadsFiles() throws IOException {14 File tempFile = File.createTempFile("temp", "txt");15 tempFile.deleteOnExit();16 IOUtil.writeText("foo", tempFile);17 assertEquals("foo", IOUtil.readText(tempFile));18 }19 public void testWritesReadsFiles() throws IOException {20 File tempFile = File.createTempFile("temp", "txt");21 tempFile.deleteOnExit();22 IOUtil.writeText("foo", tempFile);23 assertEquals("foo", IOUtil.readText(tempFile));24 }25 public void testWritesReadsFiles() throws IOException {26 File tempFile = File.createTempFile("temp", "txt");27 tempFile.deleteOnExit();28 IOUtil.writeText("foo", tempFile);29 assertEquals("foo", IOUtil.readText(tempFile));30 }31 public void testWritesReadsFiles() throws IOException {32 File tempFile = File.createTempFile("temp", "txt");33 tempFile.deleteOnExit();34 IOUtil.writeText("foo", tempFile);35 assertEquals("foo", IOUtil.readText(tempFile));36 }

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writes_reads_files

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1import org.mockito.internal.util.io.IOUtil;2public class IOUtilTest {3 public void writes_reads_files() throws IOException {4 File file = File.createTempFile("test", "test");5 file.deleteOnExit();6 String content = "test";7 IOUtil.writeText(content, file);8 assertEquals(content, IOUtil.readText(file));9 }10}11import org.mockito.internal.util.io.IOUtil;12public class IOUtilTest {13 public void writes_reads_files() throws IOException {14 File file = File.createTempFile("test", "test");15 file.deleteOnExit();16 String content = "test";17 IOUtil.writeText(content, file);18 assertEquals(content, IOUtil.readText(file));19 }20}

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writes_reads_files

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1import org.mockito.internal.util.io.IOUtilTest2import org.junit.Test3import org.junit.Assert4class IOUtilTestTest {5 void test() {6 def ioUtilTest = new IOUtilTest()7 def result = ioUtilTest.writes_reads_files()8 Assert.assertTrue(result)9 }10}11The test will fail because the code under test has a bug. The bug is that the method writes_reads_files() does not close the file after writing to it. The test will fail with the following error:12static boolean writes_reads_files() {13 def file = File.createTempFile("mockito", "test")14 file.write("Hello world!".getBytes())15 return bytes == "Hello world!".getBytes()16}

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writes_reads_files

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1 def "should return true if file has the same content"() {2 def file = new File("file.txt")3 file.write("content")4 def otherFile = new File("otherFile.txt")5 otherFile.write("content")6 def result = IOUtil.writes_reads_files(file, otherFile)7 }8 def "should return false if file has different content"() {9 def file = new File("file.txt")10 file.write("content")11 def otherFile = new File("otherFile.txt")12 otherFile.write("otherContent")13 def result = IOUtil.writes_reads_files(file, otherFile)14 }15 def "should throw IOException if first file does not exist"() {16 def file = new File("file.txt")17 def otherFile = new File("otherFile.txt")18 otherFile.write("otherContent")19 def result = IOUtil.writes_reads_files(file, otherFile)20 thrown(IOException)21 }22 def "should throw IOException if second file does not exist"() {23 def file = new File("file.txt")24 file.write("content")25 def otherFile = new File("otherFile.txt")26 def result = IOUtil.writes_reads_files(file, otherFile)27 thrown(IOException)28 }29 def "should return true if file has the same content (byte)"() {30 def file = new File("file.txt")31 file.write("content".getBytes())32 def otherFile = new File("otherFile.txt")33 otherFile.write("content".getBytes())34 def result = IOUtil.writes_reads_files(file, otherFile)35 }36 def "should return false if file has different content (byte)"() {37 def file = new File("file.txt")38 file.write("content".getBytes())39 def otherFile = new File("otherFile.txt")40 otherFile.write("otherContent".getBytes())41 def result = IOUtil.writes_reads_files(file, otherFile)42 }43 def "should throw IOException if first file does not exist (byte)"() {

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Wiremock provides a simulator for HTTP-based APIs while Mockito provides the mock implementation of the method/object.

If we are using Mockito to mock HTTP-based method, it means we are trying to return the object/response without testing any code to invoke REST service, getting HTTP response and deserializing the same.

If we use the Wiremock, we will able to test close to reality as it will test invocation of REST call as well as deserialization of the response.

https://www.linkedin.com/pulse/what-difference-between-stub-mock-virtual-service-wojciech-bulaty/ is one good article to read, of course not by me :-)

https://stackoverflow.com/questions/50726017/why-we-should-use-wiremock-instead-of-mockito

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