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BruceEckelBruceEckel
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TDD section (not great yet, but runs)
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7 files changed

+178
-1
lines changed

7 files changed

+178
-1
lines changed

‎verifying/StringInverter.java

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// verifying/StringInverter.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
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interface StringInverter {
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public String invert(String str);
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}

‎verifying/StringInverter1.java

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// verifying/StringInverter1.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
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// {java StringInverterTest StringInverter1}
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public class StringInverter1 implements StringInverter {
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public String invert(String str) { return ""; }
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}
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/* Output:
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StringInverter1 has 3 FAILURES:
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Failure 1:
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allowedCharacters_Fail(StringInverterTest)
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Expected exception: java.lang.RuntimeException
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Failure 2:
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basicInversion_Succeed(StringInverterTest)
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expected:<[]> but was:<[eXIT, pURSUED BY A bEAR.]>
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Failure 3:
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lengthLessThan26_Fail(StringInverterTest)
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Expected exception: java.lang.RuntimeException
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*/

‎verifying/StringInverter2.java

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// verifying/StringInverter2.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
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// {java StringInverterTest StringInverter2}
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import static java.lang.Character.*;
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public class StringInverter2 implements StringInverter {
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public String invert(String str) {
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String result = "";
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for(int i = 0; i < str.length(); i++) {
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char c = str.charAt(i);
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result += isUpperCase(c) ?
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toLowerCase(c) :
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toUpperCase(c);
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}
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return result;
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}
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}
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/* Output:
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StringInverter2 has 2 FAILURES:
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Failure 1:
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allowedCharacters_Fail(StringInverterTest)
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Expected exception: java.lang.RuntimeException
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Failure 2:
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lengthLessThan26_Fail(StringInverterTest)
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Expected exception: java.lang.RuntimeException
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*/

‎verifying/StringInverter3.java

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// verifying/StringInverter3.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
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// {java StringInverterTest StringInverter3}
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import static java.lang.Character.*;
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public class StringInverter3 implements StringInverter {
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public String invert(String str) {
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if(str.length() > 25)
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throw new RuntimeException("argument too long!");
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String result = "";
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for(int i = 0; i < str.length(); i++) {
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char c = str.charAt(i);
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result += isUpperCase(c) ?
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toLowerCase(c) :
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toUpperCase(c);
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}
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return result;
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}
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}
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/* Output:
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StringInverter3 has 1 FAILURES:
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Failure 1:
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allowedCharacters_Fail(StringInverterTest)
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Expected exception: java.lang.RuntimeException
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*/

‎verifying/StringInverter4.java

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// verifying/StringInverter4.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
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// {java StringInverterTest StringInverter4}
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import static java.lang.Character.*;
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public class StringInverter4 implements StringInverter {
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static final String allowed =
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"abcdefghijklmnopqrstuvwxyz ,." +
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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public String invert(String str) {
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if(str.length() > 25)
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throw new RuntimeException("argument too long!");
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String result = "";
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for(int i = 0; i < str.length(); i++) {
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char c = str.charAt(i);
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if(allowed.indexOf(c) == -1)
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throw new RuntimeException(c + " Not allowed");
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result += isUpperCase(c) ?
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toLowerCase(c) :
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toUpperCase(c);
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}
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return result;
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}
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}
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/* Output:
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StringInverter4 has 0 FAILURES:
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*/

‎verifying/StringInverterTest.java

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// verifying/StringInverterTest.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
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// {ValidateByHand} // Don't run by itself
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import java.util.*;
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import org.junit.*;
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import static org.junit.Assert.*;
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import org.junit.runner.*;
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import org.junit.runner.notification.Failure;
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public class StringInverterTest {
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static StringInverter inverter;
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@Test
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public final void basicInversion_Succeed() {
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String in = "Exit, Pursued by a Bear.";
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String out = "eXIT, pURSUED BY A bEAR.";
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assertEquals(inverter.invert(in), out);
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}
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@Test(expected = ComparisonFailure.class)
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public final void basicInversion_Fail() {
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assertEquals(inverter.invert("X"), "X");
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}
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@Test(expected = RuntimeException.class)
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public final void allowedCharacters_Fail() {
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inverter.invert(";-_()*&^%$#@!~`");
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inverter.invert("0123456789");
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}
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/*@Test
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public final void allowedCharacters_Succeed() {
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inverter.invert("abcdefghijklmnopqrstuvwxyz ,.");
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inverter.invert("ABCDEFGHIJKLMNOPQRSTUVWXYZ ,.");
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assertTrue(true); // No exception thrown
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}*/
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@Test(expected = RuntimeException.class)
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public final void lengthLessThan26_Fail() {
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String str = "xxxxxxxxxxxxxxxxxxxxxxxxxx";
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assertTrue(str.length() > 25);
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inverter.invert(str);
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}
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@Test
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public final void lengthLessThan26_Succeed() {
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String str = "xxxxxxxxxxxxxxxxxxxxxxxxx";
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assertTrue(str.length() < 26);
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inverter.invert(str);
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assertTrue(true); // No exception thrown
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}
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public static void main(String[] args) throws Exception{
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assertEquals(args.length, 1);
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inverter = (StringInverter)
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Class.forName(args[0]).newInstance();
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Result result = JUnitCore.runClasses(
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StringInverterTest.class);
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List<Failure> failures = result.getFailures();
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System.out.printf("%s has %d FAILURES:\n",
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args[0], failures.size());
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int count = 1;
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for(Failure f : failures) {
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System.out.printf("Failure %d:\n", count++);
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System.out.println(f.getDescription());
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System.out.println(f.getMessage());
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}
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}
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}

‎verifying/logback.xml

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<root level="TRACE">
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<appender-ref ref="STDOUT" />
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</root>
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</configuration>
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</configuration>

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