Continous_Integration_in_der_Praxis
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Uebung-Tannenbaum
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Thomas Papendieck 4 years ago
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  1. 209
      pom.xml
  2. 11
      src/main/java/de/edu/hsfulda/ciip/tdd/NumberRepeater.java
  3. 7
      src/main/java/de/edu/hsfulda/ciip/tdd/StringRepeater.java
  4. 11
      src/main/java/de/edu/hsfulda/ciip/tdd/SymbolRepeater.java
  5. 48
      src/main/java/de/edu/hsfulda/ciip/tdd/TannenbaumRenderer.java
  6. 42
      src/main/java/de/edu/hsfulda/ciip/tdd/TannenbaumUi.java
  7. 39
      src/test/java/de/edu/hsfulda/ciip/tdd/TannenbaumRendererTest.java
  8. 83
      src/test/java/de/edu/hsfulda/ciip/tdd/TannenbaumUiTest.java

209
pom.xml
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<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>de.edu.hsfulda.ciip.tdd</groupId>
<artifactId>tannenbaum</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.source>14</maven.compiler.source>
<maven.compiler.target>14</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<junit.version>5.6.0</junit.version>
<maven-enforcer-plugin.version>3.0.0-M3</maven-enforcer-plugin.version>
<maven-checkstyle-plugin.version>3.1.0</maven-checkstyle-plugin.version>
<checkstyle.version>8.29</checkstyle.version>
<checkstyle-rules.version>4.0.1</checkstyle-rules.version>
<maven-surefire-plugin.version>3.0.0-M4</maven-surefire-plugin.version>
<jacoco-maven-plugin.version>0.8.4</jacoco-maven-plugin.version>
<maven-javadoc-plugin.version>3.0.0</maven-javadoc-plugin.version>
<coveralls-maven-plugin.version>4.3.0</coveralls-maven-plugin.version>
<!-- JaCoCo thresholds. Increase gradually as you add tests. -->
<jacoco.unit-tests.limit.instruction-ratio>0%</jacoco.unit-tests.limit.instruction-ratio>
<jacoco.unit-tests.limit.branch-ratio>0%</jacoco.unit-tests.limit.branch-ratio>
<jacoco.unit-tests.limit.class-complexity>20</jacoco.unit-tests.limit.class-complexity>
<jacoco.unit-tests.limit.method-complexity>5</jacoco.unit-tests.limit.method-complexity>
</properties>
<dependencies>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>2.21.0</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-junit-jupiter</artifactId>
<version>2.23.0</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-enforcer-plugin</artifactId>
<version>${maven-enforcer-plugin.version}</version>
<executions>
<execution>
<goals>
<goal>enforce</goal>
</goals>
<configuration>
<rules>
<requireMavenVersion>
<version>3.6.3</version>
</requireMavenVersion>
</rules>
<fail>true</fail>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-checkstyle-plugin</artifactId>
<version>${maven-checkstyle-plugin.version}</version>
<dependencies>
<dependency>
<groupId>com.puppycrawl.tools</groupId>
<artifactId>checkstyle</artifactId>
<version>${checkstyle.version}</version>
</dependency>
<dependency>
<groupId>com.github.ngeor</groupId>
<artifactId>checkstyle-rules</artifactId>
<version>${checkstyle-rules.version}</version>
</dependency>
</dependencies>
<configuration>
<configLocation>com/github/ngeor/checkstyle.xml</configLocation>
<includeTestSourceDirectory>true</includeTestSourceDirectory>
<skip>true</skip>
</configuration>
<executions>
<execution>
<id>checkstyle</id>
<phase>validate</phase>
<goals>
<goal>check</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>${maven-surefire-plugin.version}</version>
</plugin>
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>${jacoco-maven-plugin.version}</version>
<executions>
<execution>
<id>pre-unit-test</id>
<goals>
<goal>prepare-agent</goal>
</goals>
</execution>
<execution>
<id>post-unit-test</id>
<phase>test</phase>
<goals>
<goal>report</goal>
</goals>
</execution>
<execution>
<id>check-unit-test</id>
<phase>test</phase>
<goals>
<goal>check</goal>
</goals>
<configuration>
<dataFile>${project.build.directory}/jacoco.exec</dataFile>
<rules>
<rule>
<element>BUNDLE</element>
<limits>
<limit>
<counter>INSTRUCTION</counter>
<value>COVEREDRATIO</value>
<minimum>${jacoco.unit-tests.limit.instruction-ratio}</minimum>
</limit>
<limit>
<counter>BRANCH</counter>
<value>COVEREDRATIO</value>
<minimum>${jacoco.unit-tests.limit.branch-ratio}</minimum>
</limit>
</limits>
</rule>
<rule>
<element>CLASS</element>
<limits>
<limit>
<counter>COMPLEXITY</counter>
<value>TOTALCOUNT</value>
<maximum>${jacoco.unit-tests.limit.class-complexity}</maximum>
</limit>
</limits>
</rule>
<rule>
<element>METHOD</element>
<limits>
<limit>
<counter>COMPLEXITY</counter>
<value>TOTALCOUNT</value>
<maximum>${jacoco.unit-tests.limit.method-complexity}</maximum>
</limit>
</limits>
</rule>
</rules>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
<reporting>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>${maven-javadoc-plugin.version}</version>
</plugin>
</plugins>
</reporting>
<profiles>
<!-- Publish coverage report to Coveralls, only when running in Travis. -->
<profile>
<id>travis</id>
<activation>
<property>
<name>env.TRAVIS</name>
</property>
</activation>
<build>
<plugins>
<plugin>
<groupId>org.eluder.coveralls</groupId>
<artifactId>coveralls-maven-plugin</artifactId>
<version>${coveralls-maven-plugin.version}</version>
</plugin>
</plugins>
</build>
</profile>
</profiles>
</project>

11
src/main/java/de/edu/hsfulda/ciip/tdd/NumberRepeater.java
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package de.edu.hsfulda.ciip.tdd;
public class NumberRepeater implements StringRepeater {
@Override
public void repeatSymbol(StringBuilder slice, int i, String symbolIndent) {
// TODO Auto-generated method stub
}
}

7
src/main/java/de/edu/hsfulda/ciip/tdd/StringRepeater.java
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package de.edu.hsfulda.ciip.tdd;
public interface StringRepeater {
void repeatSymbol(StringBuilder slice, int i, String symbolIndent);
}

11
src/main/java/de/edu/hsfulda/ciip/tdd/SymbolRepeater.java
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package de.edu.hsfulda.ciip.tdd;
public class SymbolRepeater implements StringRepeater {
public void repeatSymbol(StringBuilder slice, int count, String symbol) {
for (int j = 0; j < count; j++) {
slice.append(symbol);
}
}
}

48
src/main/java/de/edu/hsfulda/ciip/tdd/TannenbaumRenderer.java
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package de.edu.hsfulda.ciip.tdd;
import java.util.LinkedList;
import java.util.List;
public class TannenbaumRenderer {
private static final int BOTH_DIRECTIONS = 2;
private static final int OFFSET = 1;
private static final int MIDDLE_BRANCH = 1;
private static final String SYMBOL_TRUNK = "I";
private static final String SYMBOL_BRANCH = "X";
private static final String SYMBOL_INDENT = " ";
private final StringRepeater symbolRepeater;
public TannenbaumRenderer(StringRepeater symbolRepeater) {
this.symbolRepeater = symbolRepeater;
}
public List<String> getTreeOf(int size) {
List<String> tree = new LinkedList<>();
renderTreeSlices(size, tree);
renderTrunk(size, tree);
return tree;
}
private void renderTrunk(int size, List<String> tree) {
StringBuilder slice = new StringBuilder();
symbolRepeater.repeatSymbol(slice, size - MIDDLE_BRANCH, SYMBOL_INDENT);
symbolRepeater.repeatSymbol(slice, MIDDLE_BRANCH, SYMBOL_TRUNK);
tree.add(slice.toString());
}
private void renderTreeSlices(int size, List<String> tree) {
for (int sliceWidth = 0; sliceWidth < size; sliceWidth++) {
renderSingleSlice(size, tree, sliceWidth);
}
}
private void renderSingleSlice(int size, List<String> tree, int sliceWidth) {
StringBuilder slice = new StringBuilder();
symbolRepeater.repeatSymbol(slice, size - (sliceWidth + OFFSET), SYMBOL_INDENT);
symbolRepeater.repeatSymbol(slice, sliceWidth * BOTH_DIRECTIONS + MIDDLE_BRANCH, SYMBOL_BRANCH);
tree.add(slice.toString());
}
}

42
src/main/java/de/edu/hsfulda/ciip/tdd/TannenbaumUi.java
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package de.edu.hsfulda.ciip.tdd;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintStream;
import java.util.List;
public class TannenbaumUi {
public static final String TREE_SIZE_PROMPT = "enter tree size:";
private InputStream input;
private PrintStream output;
public TannenbaumUi(InputStream input, PrintStream output) {
this.input = input;
this.output = output;
// TODO Auto-generated constructor stub
}
public int getTreeSize() {
output.println("enter tree size:");
try {
int available = input.available();
int treesize = 0;
for (int i = 0; i < available; i++) {
treesize *= 10;
treesize += input.read() - '0';
}
return treesize;
} catch (IOException e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
public void print(List<String> messageLines) {
for (String line : messageLines) {
output.println(line);
}
}
}

39
src/test/java/de/edu/hsfulda/ciip/tdd/TannenbaumRendererTest.java
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package de.edu.hsfulda.ciip.tdd;
import static org.junit.jupiter.api.Assertions.*;
import java.util.Arrays;
import java.util.List;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
class TannenbaumRendererTest {
private final SymbolRepeater symbolRepeater = new SymbolRepeater();
@BeforeEach
void setUp() throws Exception {
}
@Test
void renderTreeSize1() {
int size = 1;
List<String> expectedTree = Arrays.asList("X", "I");
List<String> tree = new TannenbaumRenderer(symbolRepeater).getTreeOf(size);
assertArrayEquals(expectedTree.toArray(), tree.toArray(), "tree");
}
@Test
void renderTreeSize2() {
int size = 2;
List<String> expectedTree = Arrays.asList(" X", "XXX", " I");
List<String> tree = new TannenbaumRenderer(symbolRepeater).getTreeOf(size);
assertArrayEquals(expectedTree.toArray(), tree.toArray(), "tree");
}
}

83
src/test/java/de/edu/hsfulda/ciip/tdd/TannenbaumUiTest.java
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package de.edu.hsfulda.ciip.tdd;
import static org.junit.jupiter.api.Assertions.assertEquals;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintStream;
import java.util.Arrays;
import java.util.List;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.InOrder;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.mockito.junit.jupiter.MockitoExtension;
@ExtendWith(MockitoExtension.class)
class TannenbaumUiTest {
@Mock
PrintStream output;
@Mock
InputStream input;
@Test
void parseUserInputToInteger() throws IOException {
Mockito.doReturn(1).when(input).available();
Mockito.doReturn((int) '7').when(input).read();
int expected = 7;
int treeSize = new TannenbaumUi(input, output).getTreeSize();
assertEquals(expected, treeSize, "tree size");
InOrder inOrder = Mockito.inOrder(input, output);
inOrder.verify(output).println(TannenbaumUi.TREE_SIZE_PROMPT);
inOrder.verify(input).available();
}
@Test
void parseUserInputToInteger2() throws IOException {
Mockito.doReturn(1).when(input).available();
Mockito.doReturn((int) '9').when(input).read();
int expected = 9;
int treeSize = new TannenbaumUi(input, output).getTreeSize();
assertEquals(expected, treeSize, "tree size");
}
@Test
void parseUserInputToInteger2Digits() throws IOException {
Mockito.doReturn(2).when(input).available();
Mockito.doReturn((int) '3').doReturn((int) '5').when(input).read();
int expected = 35;
int treeSize = new TannenbaumUi(input, output).getTreeSize();
assertEquals(expected, treeSize, "tree size");
}
@Test
void writeSingleLine() throws Exception {
String message = "hello world";
new TannenbaumUi(input, output).print(Arrays.asList(message));
Mockito.verify(output).println(message);
}
@Test
void writeMultipeleLines() throws Exception {
List<String> messageLines = Arrays.asList("hello", "world");
new TannenbaumUi(input, output).print(messageLines);
Mockito.verify(output).println(messageLines.get(0));
Mockito.verify(output).println(messageLines.get(1));
}
}
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