KaneAI - World’s First E2E Software Testing Agent.Signup for Private Beta Join TestMu Conference

How to use readFile method of org.assertj.core.api.AbstractFileAssert class

Best Assertj code snippet using org.assertj.core.api.AbstractFileAssert.readFile

Source:AbstractFileAssert.java

...1296   * @throws UncheckedIOException when failing to read the actual {@code File}.1297   */1298  public AbstractByteArrayAssert<?> binaryContent() {1299    files.assertCanRead(info, actual);1300    return new ByteArrayAssert(readFile()).withAssertionState(myself);1301  }1302  /**1303   * Returns String assertions on the content of the actual {@code File} read with the {@link Charset#defaultCharset() default charset}.1304   * <p>1305   * Example:1306   * <pre><code class='java'> File xFile = Files.write(Paths.get("xfile.txt"), "The Truth Is Out There".getBytes()).toFile();1307   *1308   * // assertion succeeds (default charset is used to read xFile content):1309   * assertThat(xFile).content().startsWith("The Truth Is ");1310   *1311   * // assertion fails:1312   * assertThat(xFile).content().contains("Elsewhere");</code></pre>1313   *1314   * @return a StringAssert object with the content of the actual {@code File} read with the default {@link Charset}.1315   * @throws AssertionError if the actual {@code File} is not readable.1316   * @throws UncheckedIOException when failing to read the actual {@code File}.1317   * @since 3.21.01318   */1319  public AbstractStringAssert<?> content() {1320    // does not call content(Charset.defaultCharset()) to avoid double proxying in soft assertions.1321    return internalContent(Charset.defaultCharset());1322  }1323  /**1324   * Returns String assertions on the content of the actual {@code File} read with the given {@link Charset}.1325   * <p>1326   * Example:1327   * <pre><code class='java'> File utf8File = Files.write(Paths.get("utf8.txt"), "Ã© Ã ".getBytes()).toFile();1328   *1329   * // assertion succeeds:1330   * assertThat(utf8File).content(StandardCharsets.UTF_8).endsWith("Ã© Ã ");1331   *1332   * // assertion fails:1333   * assertThat(utf8File).content(StandardCharsets.UTF_8).contains("e");</code></pre>1334   *1335   * @param charset the {@link Charset} to use to read the actual {@link File}.1336   * @return a {@link StringAssert} object with the content of the actual {@code File} read with the default {@link Charset}.1337   * @throws AssertionError if the actual {@code File} is not readable.1338   * @throws UncheckedIOException when failing to read the actual {@code File}.1339   * @since 3.21.01340   */1341  public AbstractStringAssert<?> content(Charset charset) {1342    return internalContent(charset);1343  }1344  /**1345   * Verifies that the actual {@code File} has no extension.1346   *1347   * <p>1348   * Example:1349   * <pre><code class='java'> // assertions succeed1350   * assertThat(new File(&quot;file&quot;)).hasNoExtension();1351   * assertThat(new File(&quot;file.&quot;)).hasNoExtension();1352   *1353   * // assertion fails1354   * assertThat(new File(&quot;file.txt&quot;)).hasNoExtension();</code></pre>1355   *1356   * @return {@code this} assertion object.1357   * @throws AssertionError if the actual {@code File} is {@code null}.1358   * @throws AssertionError if the actual {@code File} is not a file (ie a directory or does not exist).1359   * @throws AssertionError if the actual {@code File} does have an extension.1360   */1361  public SELF hasNoExtension() {1362    files.assertHasNoExtension(info, actual);1363    return myself;1364  }1365  /**1366   * Returns an {@code Assert} object that allows performing assertions on the size of the {@link File} under test.1367   * <p>1368   * Once this method is called, the object under test is no longer the {@link File} but its size,1369   * to perform assertions on the {@link File}, call {@link AbstractFileSizeAssert#returnToFile()}.1370   * <p>1371   * Example:1372   * <pre><code class='java'> File file = File.createTempFile(&quot;tmp&quot;, &quot;bin&quot;);1373   * Files.write(file.toPath(), new byte[] {1, 1});1374   *1375   * // assertions succeed1376   * assertThat(file).size().isGreaterThan(1L).isLessThan(5L)1377   *                 .returnToFile().hasBinaryContent(new byte[] {1, 1});1378   *1379   * // assertions fails1380   * assertThat(file).size().isBetween(5L, 10L);</code></pre>1381   *1382   * @return AbstractFileSizeAssert built with the {@code File}'s size.1383   * @throws NullPointerException if the given {@code File} is {@code null}.1384   * @since 3.22.01385   */1386  @SuppressWarnings({ "rawtypes", "unchecked" })1387  @CheckReturnValue1388  public AbstractFileSizeAssert<SELF> size() {1389    requireNonNull(actual, "Can not perform assertions on the size of a null file.");1390    return new FileSizeAssert(this);1391  }1392  // this method was introduced to avoid to avoid double proxying in soft assertions for content()1393  private AbstractStringAssert<?> internalContent(Charset charset) {1394    files.assertCanRead(info, actual);1395    String fileContent = readFile(charset);1396    return new StringAssert(fileContent).withAssertionState(myself);1397  }1398  private byte[] readFile() {1399    try {1400      return readAllBytes(actual.toPath());1401    } catch (IOException e) {1402      throw new UncheckedIOException(format("Failed to read %s content", actual), e);1403    }1404  }1405  private String readFile(Charset charset) {1406    try {1407      return new String(readAllBytes(actual.toPath()), charset);1408    } catch (IOException e) {1409      throw new UncheckedIOException(format("Failed to read %s content with %s charset", actual, charset), e);1410    }1411  }1412}...

readFile

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import java.io.File;3import java.io.IOException;4import java.nio.charset.StandardCharsets;5import java.nio.file.Files;6import java.nio.file.Paths;7import java.util.List;8import org.junit.Test;9public class AssertJReadFileTest {10public void testReadFile() throws IOException {11File file = new File("src/test/resources/test.txt");12String content = Assertions.assertThat(file)13.overridingErrorMessage("File %s does not exist", file.getAbsolutePath())14.exists()15.isFile()16.canRead()17.hasContent("This is a test file")18.isEqualTo(new File("src/test/resources/test.txt"))19.hasSameContentAs(new File("src/test/resources/test.txt"))20.hasSameTextualContentAs(new File("src/test/resources/test.txt"))21.isNotEqualTo(new File("src/test/resources/test2.txt"))22.isNotEqualTo(new File("src/test/resources/test3.txt"))23.hasName("test.txt")24.hasParent("resources")25.hasParent("test-classes")26.hasParent("test")27.hasParent("src")28.hasParent("src/test"

readFile

Using AI Code Generation

1assertThat(file).readFile(StandardCharsets.UTF_8).contains("foo");2assertThat(file).readFile(StandardCharsets.UTF_8).isEqualTo("foo");3assertThat(file).readFile(StandardCharsets.UTF_8).startsWith("foo");4assertThat(file).readFile(StandardCharsets.UTF_8).endsWith("foo");5assertThat(file).readFile(StandardCharsets.UTF_8).containsOnlyOnce("foo");6assertThat(file).readFile(StandardCharsets.UTF_8).containsSequence("foo", "bar");7assertThat(file).readFile(StandardCharsets.UTF_8).containsIgnoringCase("foo");8assertThat(file).readFile(StandardCharsets.UTF_8).containsPattern("foo");9assertThat(file).readFile(StandardCharsets.UTF_8).hasLineCount(1);10assertThat(file).readFile(StandardCharsets.UTF_8).hasSameContentAs("foo");11assertThat(file).readFile(StandardCharsets.UTF_8).hasSameTextualContentAs("foo");12assertThat(file).readFile(StandardCharsets.UTF_8).hasSameTextualContentAs("foo", StandardCharsets.UTF_8);13assertThat(file).readFile(StandardCharsets.UTF_8).hasSameTextualContentAs(new File("foo"));14assertThat(file).readFile(StandardCharsets.UTF_8).hasSameTextualContentAs(new File("foo"), StandardCharsets.UTF_8);15assertThat(file).readFile(StandardCharsets.UTF_8).hasSameTextualContentAs(new URL("foo"));16assertThat(file).readFile(StandardCharsets.UTF_8).hasSameTextualContentAs(new URL("foo"), StandardCharsets.UTF_8);17assertThat(file).readFile(StandardCharsets.UTF_8).hasSameTextualContentAs(new URI("foo"));18assertThat(file).readFile(StandardCharsets.UTF_8).hasSameTextualContentAs(new URI("foo"), StandardCharsets.UTF_8);19assertThat(file).readFile(StandardCharsets.UTF_8).hasSameBinaryContentAs("foo");20assertThat(file).readFile(StandardCharsets.UTF_8).hasSameBinaryContentAs(new File("foo"));21assertThat(file).readFile(StandardCharsets.UTF_8).hasSameBinaryContentAs(new URL("foo"));22assertThat(file).readFile(StandardCharsets.UTF_8).hasSameBinaryContentAs(new URI("foo"));23assertThat(file).readFile(StandardCharsets.UTF_8

readFile

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import java.io.File;3public class ReadFileExample {4    public static void main(String[] args) {5        String content = Assertions.assertThat(new File("src/test/resources/test.txt")).hasContent("Hello World");6        System.out.println(content);7    }8}

readFile

Using AI Code Generation

1assertThat(file).readFile(StandardCharsets.UTF_8).isEqualTo("content");2assertThat(file).hasContent("content");3assertThat(file).hasContent("content");4assertThat(file).hasContent("content");5assertThat(file).hasContent("content");6assertThat(file).hasContent("content");7assertThat(file).hasContent("content");8assertThat(file).hasContent("content");9assertThat(file).hasContent("content");10assertThat(file).hasContent("content");11assertThat(file).hasContent("content");12assertThat(file).hasContent("content");13assertThat(file).hasContent("content");14assertThat(file).hasContent("content");

readFile

Using AI Code Generation

1import org.assertj.core.api.Assertions.*2import org.assertj.core.api.*3import java.io.File4def file = new File("C:\\path\\to\\file.txt")5assertThat(file).isFile()6def content = assertThat(file).readFile()

readFile

Using AI Code Generation

1File file = new File("test.txt");2String content = assertThat(file).isFile().hasContent("test").readFile(Charset.forName("UTF-8"));3File file = new File("test.txt");4List<String> lines = assertThat(file).isFile().hasContent("test").readLines(Charset.forName("UTF-8"));5File file = new File("test.txt");6List<String> lines = assertThat(file).isFile().hasContent("test").readLines(Charset.forName("UTF-8"));7File file = new File("test.txt");8List<String> lines = assertThat(file).isFile().hasContent("test").readLines(Charset.forName("UTF-8"));9File file = new File("test.txt");10List<String> lines = assertThat(file).isFile().hasContent("test").readLines(Charset.forName("UTF-8"));11File file = new File("test.txt");12List<String> lines = assertThat(file).isFile().hasContent("test").readLines(Charset.forName("UTF-8"));13File file = new File("test.txt");14List<String> lines = assertThat(file).isFile().hasContent("test").readLines(Charset.forName("UTF-8"));

readFile

Using AI Code Generation

1import org.assertj.core.api.Assertions.*2import org.assertj.core.api.AbstractFileAssert.*3import java.io.File4String content = new File("test.txt").readFile("UTF-8")5assertThat(content).contains("Hello World")6assertThat(content).contains("Hello World").contains("Hello World")7assertThat(content).contains("Hello World").doesNotContain("Hello World")8assertThat(content).contains("Hello World").doesNotContain("Hello World").contains("Hello World")9assertThat(content).contains("Hello World").doesNotContain("Hello World").contains("Hello World").doesNotContain("Hello World")10assertThat(content).contains("Hello World").doesNotContain("Hello World").contains("Hello World").doesNotContain("Hello World").contains("Hello World")11assertThat(content).contains("Hello World").doesNotContain("Hello World").contains("Hello World").doesNotContain("Hello World").contains("Hello World").doesNotContain("Hello World")12assertThat(content).contains("Hello World").doesNotContain("Hello World").contains("Hello World").doesNotContain("Hello World").contains("Hello World").doesNotContain("Hello World").contains("Hello World")13assertThat(content).contains("Hello World").doesNotContain("Hello World").contains("Hello World").doesNotContain("Hello World").contains("Hello World").doesNotContain("Hello World").contains("Hello World").doesNotContain("Hello World")14assertThat(content).contains("Hello World").doesNotContain("Hello World").contains("Hello World").doesNotContain("Hello World").contains("Hello World").doesNotContain("Hello World").contains("Hello World").doesNotContain("Hello World").cont

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.