StringUtilitiesTest.java

package hk.hku.cecid.piazza.commons.utils;


import hk.hku.cecid.piazza.commons.util.StringUtilities;
import org.junit.After;
import org.junit.Test;

import static org.junit.Assert.*;

public class StringUtilitiesTest {

    @After
    public void reset() {
        System.clearProperty("test.property");
    }
    
    @Test
    public void testSystemPropertyReplace() {
       String property = "${test.property}";
       System.setProperty("test.property", "somevalue");
       
       assertEquals("somevalue",StringUtilities.propertyValue(property));
       assertEquals("somevalue/test",StringUtilities.propertyValue(property + "/test"));
       
    }
    
    @Test
    public void testSystemPropertyReplaceWithDefault() {
        String property = "${test.property:defaultvalue}";

        assertEquals("defaultvalue",StringUtilities.propertyValue(property));
        
        System.setProperty("test.property", "somevalue");
        
        assertEquals("somevalue",StringUtilities.propertyValue(property));

    }
    
    @Test
    public void testSystemPropertyReplaceWithDefaultWithColonInTheValues() {
        String property = "${test.property:defaultvalue:value1:value2}";

        assertEquals("defaultvalue:value1:value2",StringUtilities.propertyValue(property));
        
        System.setProperty("test.property", "somevalue");
        
        assertEquals("somevalue",StringUtilities.propertyValue(property));

    }
    
    @Test
    public void testSystemPropertyReplaceWithEmptyDefault() {
        String property = "${test.property:}${test.property:}";

        assertEquals(null,StringUtilities.propertyValue(property));
        
        System.setProperty("test.property", "somevalue");
        
        assertEquals("somevaluesomevalue",StringUtilities.propertyValue(property));

    }
    
    @Test
    public void testSystemPropertyReplaceWithMultipleProps() {
        String property = "${test.property:default}/${test.property:}";

        assertEquals("default/",StringUtilities.propertyValue(property));
        
        System.setProperty("test.property", "somevalue");
        
        assertEquals("somevalue/somevalue",StringUtilities.propertyValue(property));

    }
    
    @Test
    public void testSystemPropertyReplaceNotDefined() {
        String property = "${jentrata.activemq.connectionFactoryUrl:vm://localhost?broker.persistent=false}";

        assertEquals("vm://localhost?broker.persistent=false",StringUtilities.propertyValue(property));

    }
    
    
    
    @Test
    public void testSplitFirstSimple() {
        
        assertNull(StringUtilities.splitFirst(null, "|"));
        
        String result [] = StringUtilities.splitFirst("first half|second half", "|");
        
        assertEquals(2,result.length);
        assertEquals("first half",result[0]);
        assertEquals("second half",result[1]);
        
    }
    
    @Test
    public void testSplitFirstMultiple() {
        
        String result [] = StringUtilities.splitFirst("first half|second half|third", "|");
        
        assertEquals(2,result.length);
        assertEquals("first half",result[0]);
        assertEquals("second half|third",result[1]);
        
    }

    @Test
    public void testPropertyWithDefaultProperty() {
        System.setProperty("test.prop","jentrata");
        String result  = StringUtilities.propertyValue("${jentrata.home:${test.prop}/bin}");
        assertTrue(result.contains("jentrata/bin"));
    }

    @Test
    public void testPropertyWithMultipleDefaultProperty() {
        System.setProperty("test.prop","jentrata");
        System.setProperty("test.prop2","bin");
        String result  = StringUtilities.propertyValue("${jentrata.home:${test.prop}/${test.prop2}");
        assertTrue(result.contains("jentrata/bin"));
    }

    @Test
    public void testPropertyWithMultipleDefaultPropertyWithDefault() {
        System.setProperty("corvus.home","jentrata");
        String result  = StringUtilities.propertyValue("${jentrata.ebms.keystore.location:${corvus.home}/security/${jentrata.ebms.keystore.file:corvus.p12}}");
        assertEquals(result,"jentrata/security/corvus.p12");
    }

    @Test
    public void testJavaParamToEnvironmentParamWithNull() {
        String input = null;
        String expectedOutput = null;
        String output = StringUtilities.javaParamToEnvironmentParam(new StringUtilities.RealEnvironment(), input);
        assertEquals(expectedOutput, output);
    }
    
    @Test
    public void testJavaParamToEnvironmentParamUseCase1() {
        String input = "jentrata.activemq.connectionFactoryUrl";
        String expectedOutput = "tcp://burgers";
        String output = StringUtilities.javaParamToEnvironmentParam(new MockEnvironment(), input);
        assertEquals(expectedOutput, output);
    }

    @Test
    public void testPropertyWithExistingEnvironmentVariable() {
        System.setProperty("test.prop","jentrata");
        String result  = StringUtilities.propertyValue("${jentrata.home:${test.prop}/bin}");
        assertTrue(result.contains("jentrata/bin"));
    }

    private class MockEnvironment extends StringUtilities.EnvironmentHandler {
        public String getenv(String envVar) {
            if (envVar.equals("JENTRATA_ACTIVEMQ_CONNECTIONFACTORYURL")) {
                return "tcp://burgers";
            } else {
                return System.getenv(envVar);
            }
        }

    }

}