Merge pull request #9940 from usman-mohyuddin/dev-removePrefix

Remove prefix from string using groovy (BAEL-4104)

core-groovy-strings/pom.xml

@@ -0,0 +1,122 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>core-groovy-strings</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <name>core-groovy-strings</name>
+    <packaging>jar</packaging>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.codehaus.groovy</groupId>
+            <artifactId>groovy</artifactId>
+            <version>${groovy.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.codehaus.groovy</groupId>
+            <artifactId>groovy-all</artifactId>
+            <version>${groovy-all.version}</version>
+            <type>pom</type>
+        </dependency>
+        <dependency>
+            <groupId>org.codehaus.groovy</groupId>
+            <artifactId>groovy-dateutil</artifactId>
+            <version>${groovy.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.codehaus.groovy</groupId>
+            <artifactId>groovy-sql</artifactId>
+            <version>${groovy-sql.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.platform</groupId>
+            <artifactId>junit-platform-runner</artifactId>
+            <version>${junit.platform.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.hsqldb</groupId>
+            <artifactId>hsqldb</artifactId>
+            <version>${hsqldb.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.spockframework</groupId>
+            <artifactId>spock-core</artifactId>
+            <version>${spock-core.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.codehaus.gmavenplus</groupId>
+                <artifactId>gmavenplus-plugin</artifactId>
+                <version>${gmavenplus-plugin.version}</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>addSources</goal>
+                            <goal>addTestSources</goal>
+                            <goal>compile</goal>
+                            <goal>compileTests</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <artifactId>maven-failsafe-plugin</artifactId>
+                <version>${maven-failsafe-plugin.version}</version>
+                <dependencies>
+                    <dependency>
+                        <groupId>org.junit.platform</groupId>
+                        <artifactId>junit-platform-surefire-provider</artifactId>
+                        <version>${junit.platform.version}</version>
+                    </dependency>
+                </dependencies>
+                <executions>
+                    <execution>
+                        <id>junit5</id>
+                        <goals>
+                            <goal>integration-test</goal>
+                            <goal>verify</goal>
+                        </goals>
+                        <configuration>
+                            <includes>
+                                <include>**/*Test5.java</include>
+                            </includes>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+    <repositories>
+        <repository>
+            <id>central</id>
+            <url>https://jcenter.bintray.com</url>
+        </repository>
+    </repositories>
+
+    <properties>
+        <junit.platform.version>1.0.0</junit.platform.version>
+        <groovy.version>2.5.6</groovy.version>
+        <groovy-all.version>2.5.6</groovy-all.version>
+        <groovy-sql.version>2.5.6</groovy-sql.version>
+        <hsqldb.version>2.4.0</hsqldb.version>
+        <spock-core.version>1.1-groovy-2.4</spock-core.version>
+        <gmavenplus-plugin.version>1.6</gmavenplus-plugin.version>
+    </properties>
+
+</project>

core-groovy-strings/src/test/groovy/com/baeldung/removeprefix/RemovePrefixTest.groovy

@@ -0,0 +1,70 @@
+package com.baeldung.removeprefix
+
+import org.junit.Assert
+import org.junit.Test
+
+class RemovePrefixTest {
+
+
+    @Test
+    public void whenCasePrefixIsRemoved_thenReturnTrue() {
+        def trimPrefix = {
+            it.startsWith('Groovy-') ? it.minus('Groovy-') : it
+        }
+        
+        def actual = trimPrefix("Groovy-Tutorials at Baeldung")
+        def expected = "Tutorials at Baeldung"
+
+        Assert.assertEquals(expected, actual)
+    }
+
+    @Test
+    public void whenPrefixIsRemoved_thenReturnTrue() {
+
+        String prefix = "groovy-"
+        String trimPrefix = "Groovy-Tutorials at Baeldung"
+        def actual;
+        if(trimPrefix.startsWithIgnoreCase(prefix)) {
+            actual = trimPrefix.substring(prefix.length())
+        }
+        
+        def expected = "Tutorials at Baeldung"
+
+        Assert.assertEquals(expected, actual)
+    }
+
+    @Test
+    public void whenPrefixIsRemovedUsingRegex_thenReturnTrue() {
+
+        def regex = ~"^([Gg])roovy-"
+        String trimPrefix = "Groovy-Tutorials at Baeldung"
+        String actual = trimPrefix - regex
+        
+        def expected = "Tutorials at Baeldung"
+
+        Assert.assertEquals(expected, actual)
+    }
+
+    @Test 
+    public void whenPrefixIsRemovedUsingReplaceFirst_thenReturnTrue() {
+        def regex = ~"^groovy" 
+        String trimPrefix = "groovyTutorials at Baeldung's groovy page" 
+        String actual = trimPrefix.replaceFirst(regex, "")
+        
+        def expected = "Tutorials at Baeldung's groovy page"
+        
+        Assert.assertEquals(expected, actual)
+    }
+
+    @Test
+    public void whenPrefixIsRemovedUsingReplaceAll_thenReturnTrue() {
+
+        String trimPrefix = "groovyTutorials at Baeldung groovy"
+        String actual = trimPrefix.replaceAll(/^groovy/, "")
+        
+        def expected = "Tutorials at Baeldung groovy"
+
+        Assert.assertEquals(expected, actual)
+    }
+
+}

pom.xml

@@ -383,6 +383,7 @@
                 <module>core-groovy</module>
                 <module>core-groovy-2</module>
                 <module>core-groovy-collections</module>
+                <module>core-groovy-strings</module>
 
                 <module>core-java-modules</module>
                 <module>core-kotlin-modules</module>
@@ -894,6 +895,7 @@
                 <module>core-groovy</module>
                 <module>core-groovy-2</module>
                 <module>core-groovy-collections</module>
+                <module>core-groovy-strings</module>
 
                 <module>core-java-modules</module>
                 <module>core-kotlin-modules</module>