Move to Junit5

pom.xml

@@ -37,9 +37,8 @@
 
   <dependencies>
     <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit</artifactId>
-      <version>4.13.2</version>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter</artifactId>
       <scope>test</scope>
     </dependency>
   </dependencies>

src/test/java/org/codehaus/plexus/interpolation/EnvarBasedValueSourceTest.java

@@ -16,27 +16,29 @@
  * limitations under the License.
  */
 
-import static org.junit.Assert.*;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
 
 import java.io.IOException;
 import java.util.HashMap;
 import java.util.Map;
 
 import org.codehaus.plexus.interpolation.os.OperatingSystemUtils;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 public class EnvarBasedValueSourceTest
 {
 
-    @Before
+    @BeforeEach
     public void setUp()
     {
         EnvarBasedValueSource.resetStatics();
     }
 
     @Test
-    public void testNoArgConstructorIsCaseSensitive()
+    void testNoArgConstructorIsCaseSensitive()
         throws IOException
     {
         OperatingSystemUtils.setEnvVarSource( new OperatingSystemUtils.EnvVarSource()
@@ -58,7 +60,7 @@ public Map<String, String> getEnvMap()
     }
 
     @Test
-    public void testCaseInsensitive()
+    void testCaseInsensitive()
         throws IOException
     {
         OperatingSystemUtils.setEnvVarSource( new OperatingSystemUtils.EnvVarSource()
@@ -80,7 +82,7 @@ public Map<String, String> getEnvMap()
     }
 
     @Test
-    public void testGetRealEnvironmentVariable()
+    void testGetRealEnvironmentVariable()
         throws IOException
     {
         OperatingSystemUtils.setEnvVarSource( new OperatingSystemUtils.DefaultEnvVarSource() );
@@ -90,7 +92,7 @@ public void testGetRealEnvironmentVariable()
         String realEnvVar = "JAVA_HOME";
 
         String realValue = System.getenv().get( realEnvVar );
-        assertNotNull( "Can't run this test until " + realEnvVar + " env variable is set", realValue );
+        assertNotNull( realValue , "Can't run this test until " + realEnvVar + " env variable is set");
 
         assertEquals( realValue, source.getValue( realEnvVar ) );
     }

src/test/java/org/codehaus/plexus/interpolation/InterpolatorFilterReaderTest.java

@@ -24,13 +24,15 @@
  * SOFTWARE.
  */
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
 import java.io.StringReader;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
-import junit.framework.TestCase;
+import org.junit.jupiter.api.Test;
 
 /**
  * InterpolatorFilterReaderTest, heavily based on InterpolationFilterReaderTest. Heh, even the test strings remained the
@@ -40,12 +42,12 @@
  * 
  */
 public class InterpolatorFilterReaderTest
-    extends TestCase
 {
     /*
      * Added and commented by jdcasey@03-Feb-2005 because it is a bug in the InterpolationFilterReader.
      * kenneyw@15-04-2005 fixed the bug.
      */
+    @Test
     public void testShouldNotInterpolateExpressionAtEndOfDataWithInvalidEndToken()
         throws Exception
     {
@@ -60,6 +62,7 @@ public void testShouldNotInterpolateExpressionAtEndOfDataWithInvalidEndToken()
     /*
      * kenneyw@14-04-2005 Added test to check above fix.
      */
+    @Test
     public void testShouldNotInterpolateExpressionWithMissingEndToken()
         throws Exception
     {
@@ -71,6 +74,7 @@ public void testShouldNotInterpolateExpressionWithMissingEndToken()
         assertEquals( "This is a ${test, really", interpolate( testStr, m ) );
     }
 
+    @Test
     public void testShouldNotInterpolateWithMalformedStartToken()
         throws Exception
     {
@@ -82,6 +86,7 @@ public void testShouldNotInterpolateWithMalformedStartToken()
         assertEquals( "This is a $!test} again", interpolate( foo, m ) );
     }
 
+    @Test
     public void testShouldNotInterpolateWithMalformedEndToken()
         throws Exception
     {
@@ -93,6 +98,7 @@ public void testShouldNotInterpolateWithMalformedEndToken()
         assertEquals( "This is a ${test!} again", interpolate( foo, m ) );
     }
 
+    @Test
     public void testDefaultInterpolationWithNonInterpolatedValueAtEnd()
         throws Exception
     {
@@ -105,6 +111,7 @@ public void testDefaultInterpolationWithNonInterpolatedValueAtEnd()
         assertEquals( "jason is an asshole. ${not.interpolated}", interpolate( foo, m ) );
     }
 
+    @Test
     public void testDefaultInterpolationWithInterpolatedValueAtEnd()
         throws Exception
     {
@@ -117,6 +124,7 @@ public void testDefaultInterpolationWithInterpolatedValueAtEnd()
         assertEquals( "jason is an asshole", interpolate( foo, m ) );
     }
 
+    @Test
     public void testInterpolationWithInterpolatedValueAtEndWithCustomToken()
         throws Exception
     {
@@ -129,6 +137,7 @@ public void testInterpolationWithInterpolatedValueAtEndWithCustomToken()
         assertEquals( "jason is an asshole", interpolate( foo, m, "@{", "}" ) );
     }
 
+    @Test
     public void testInterpolationWithInterpolatedValueAtEndWithCustomTokenAndCustomString()
         throws Exception
     {
@@ -141,6 +150,7 @@ public void testInterpolationWithInterpolatedValueAtEndWithCustomTokenAndCustomS
         assertEquals( "jason is an asshole", interpolate( foo, m, "@", "@" ) );
     }
 
+    @Test
     public void testEscape()
         throws Exception
     {
@@ -153,6 +163,7 @@ public void testEscape()
         assertEquals( "jason is an ${noun}", interpolate( foo, m, "\\" ) );
     }
 
+    @Test
     public void testEscapeAtStart()
         throws Exception
     {
@@ -165,6 +176,7 @@ public void testEscapeAtStart()
         assertEquals( "${name} is an ${noun}", interpolate( foo, m, "\\" ) );
     }
 
+    @Test
     public void testEscapeOnlyAtStart()
         throws Exception
     {
@@ -178,6 +190,7 @@ public void testEscapeOnlyAtStart()
         assertEquals( "@name@ is an asshole", result );
     }
 
+    @Test
     public void testEscapeOnlyAtStartDefaultToken()
         throws Exception
     {
@@ -191,6 +204,7 @@ public void testEscapeOnlyAtStartDefaultToken()
         assertEquals( "${name} is an asshole", result );
     }
 
+    @Test
     public void testShouldDetectRecursiveExpressionPassingThroughTwoPrefixes()
         throws Exception
     {
@@ -224,6 +238,7 @@ public void testShouldDetectRecursiveExpressionPassingThroughTwoPrefixes()
         assertEquals( input, buf.toString() );
     }
 
+    @Test
     public void testShouldDetectRecursiveExpressionWithPrefixAndWithout()
         throws Exception
     {

src/test/java/org/codehaus/plexus/interpolation/PrefixAwareRecursionInterceptorTest.java

@@ -16,15 +16,19 @@
  * limitations under the License.
  */
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
 import java.util.Arrays;
 import java.util.Collections;
 
-import junit.framework.TestCase;
+import org.junit.jupiter.api.Test;
 
 public class PrefixAwareRecursionInterceptorTest
-    extends TestCase
 {
 
+    @Test
     public void testFindExpression()
     {
         PrefixAwareRecursionInterceptor receptor = new PrefixAwareRecursionInterceptor(
@@ -42,6 +46,7 @@ public void testFindExpression()
         assertFalse( receptor.hasRecursiveExpression( expr ) );
     }
 
+    @Test
     public void testFindExpressionWithDifferentPrefix()
     {
         PrefixAwareRecursionInterceptor receptor = new PrefixAwareRecursionInterceptor(
@@ -61,6 +66,7 @@ public void testFindExpressionWithDifferentPrefix()
         assertFalse( receptor.hasRecursiveExpression( expr ) );
     }
 
+    @Test
     public void testFindExpressionWithoutPrefix()
     {
         PrefixAwareRecursionInterceptor receptor = new PrefixAwareRecursionInterceptor(

src/test/java/org/codehaus/plexus/interpolation/PrefixedObjectValueSourceTest.java

@@ -16,15 +16,17 @@
  * limitations under the License.
  */
 
+import static org.junit.jupiter.api.Assertions.assertNull;
+
 import java.util.ArrayList;
 import java.util.List;
 
-import junit.framework.TestCase;
+import org.junit.jupiter.api.Test;
 
 public class PrefixedObjectValueSourceTest
-    extends TestCase
 {
-
+
+    @Test
     public void testEmptyExpressionResultsInNullReturn_NoPrefixUsed()
     {
         String target = "Target object";
@@ -39,6 +41,7 @@ public void testEmptyExpressionResultsInNullReturn_NoPrefixUsed()
         assertNull( result );
     }
 
+    @Test
     public void testEmptyExpressionResultsInNullReturn_PrefixUsedWithDot()
     {
         String target = "Target object";
@@ -53,6 +56,7 @@ public void testEmptyExpressionResultsInNullReturn_PrefixUsedWithDot()
         assertNull( result );
     }
 
+    @Test
     public void testEmptyExpressionResultsInNullReturn_PrefixUsedWithoutDot()
     {
         String target = "Target object";

src/test/java/org/codehaus/plexus/interpolation/PrefixedValueSourceWrapperTest.java

@@ -16,14 +16,17 @@
  * limitations under the License.
  */
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
 import java.util.Properties;
 
-import junit.framework.TestCase;
+import org.junit.jupiter.api.Test;
 
 public class PrefixedValueSourceWrapperTest
-    extends TestCase
 {
 
+    @Test
     public void testShouldReturnValueForPropertyVSWRappedWithSinglePrefix()
     {
         String prefix = "prefix.";
@@ -38,6 +41,7 @@ public void testShouldReturnValueForPropertyVSWRappedWithSinglePrefix()
         assertEquals( value, wrapper.getValue( prefix + key ) );
     }
 
+    @Test
     public void testShouldReturnNullForIncorrectPrefixUsingPropertyVSWRappedWithSinglePrefix()
     {
         String prefix = "prefix.";
@@ -53,6 +57,7 @@ public void testShouldReturnNullForIncorrectPrefixUsingPropertyVSWRappedWithSing
         assertNull( wrapper.getValue( otherPrefix + key ) );
     }
 
+    @Test
     public void testShouldNullForMissingValueInPropertyVSWRappedWithSinglePrefix()
     {
         String prefix = "prefix.";

src/test/java/org/codehaus/plexus/interpolation/PropertiesBasedValueSourceTest.java

@@ -16,14 +16,17 @@
  * limitations under the License.
  */
 
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
 import java.util.Properties;
 
-import junit.framework.TestCase;
+import org.junit.jupiter.api.Test;
 
 public class PropertiesBasedValueSourceTest
-    extends TestCase
 {
 
+    @Test
     public void testPropertyShouldReturnValueFromProperties()
     {
         Properties props = new Properties();
@@ -38,6 +41,7 @@ public void testPropertyShouldReturnValueFromProperties()
         assertNotNull( vs.getValue( key ) );
     }
 
+    @Test
     public void testPropertyShouldReturnNullWhenPropertyMissing()
     {
         Properties props = new Properties();