Make sortpom version configurable

Add test for version config
Update SortPomTest to use ResourceHarness

Author: snowe2010

lib/src/main/java/com/diffplug/spotless/pom/SortPomCfg.java

@@ -21,6 +21,8 @@
 public class SortPomCfg implements Serializable {
 	private static final long serialVersionUID = 1L;
 
+	public String version = "3.2.1";
+
 	public String encoding = "UTF-8";
 
 	public String lineSeparator = System.getProperty("line.separator");

lib/src/main/java/com/diffplug/spotless/pom/SortPomStep.java

@@ -27,6 +27,8 @@
 
 public class SortPomStep {
 	public static final String NAME = "sortPom";
+	static final String PACKAGE = "com.github.ekryd.sortpom";
+	static final String MAVEN_COORDINATE = PACKAGE + ":sortpom-sorter:";
 
 	private SortPomStep() {}
 
@@ -42,7 +44,7 @@ static class State implements Serializable {
 
 		public State(SortPomCfg cfg, Provisioner provisioner) throws IOException {
 			this.cfg = cfg;
-			this.jarState = JarState.from("com.github.ekryd.sortpom:sortpom-sorter:3.2.1", provisioner);
+			this.jarState = JarState.from(MAVEN_COORDINATE + cfg.version, provisioner);
 		}
 
 		FormatterFunc createFormat() throws ClassNotFoundException, NoSuchMethodException, InvocationTargetException, InstantiationException, IllegalAccessException {

plugin-maven/src/main/java/com/diffplug/spotless/maven/pom/SortPom.java

@@ -26,6 +26,9 @@
 public class SortPom implements FormatterStepFactory {
 	private final SortPomCfg defaultValues = new SortPomCfg();
 
+	@Parameter
+	String version = defaultValues.version;
+
 	@Parameter
 	String encoding = defaultValues.encoding;
 
@@ -80,6 +83,7 @@ public class SortPom implements FormatterStepFactory {
 	@Override
 	public FormatterStep newFormatterStep(FormatterStepConfig stepConfig) {
 		SortPomCfg cfg = new SortPomCfg();
+		cfg.version = version;
 		cfg.encoding = encoding;
 		cfg.lineSeparator = lineSeparator;
 		cfg.expandEmptyElements = expandEmptyElements;

testlib/src/test/java/com/diffplug/spotless/pom/SortPomTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 DiffPlug
+ * Copyright 2021-2023 DiffPlug
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,16 +17,21 @@
 
 import org.junit.jupiter.api.Test;
 
-import com.diffplug.spotless.Provisioner;
-import com.diffplug.spotless.StepHarness;
-import com.diffplug.spotless.TestProvisioner;
+import com.diffplug.spotless.*;
 
-public class SortPomTest {
+public class SortPomTest extends ResourceHarness {
 	@Test
 	public void testSortPomWithDefaultConfig() throws Exception {
 		SortPomCfg cfg = new SortPomCfg();
-		Provisioner provisioner = TestProvisioner.mavenCentral();
-		StepHarness harness = StepHarness.forStep(SortPomStep.create(cfg, provisioner));
-		harness.testResource("pom/pom_dirty.xml", "pom/pom_clean_default.xml");
+		FormatterStep step = SortPomStep.create(cfg, TestProvisioner.mavenCentral());
+		StepHarness.forStep(step).testResource("pom/pom_dirty.xml", "pom/pom_clean_default.xml");
+	}
+
+	@Test
+	public void testSortPomWithVersion() throws Exception {
+		SortPomCfg cfg = new SortPomCfg();
+		cfg.version = "3.2.1";
+		FormatterStep step = SortPomStep.create(cfg, TestProvisioner.mavenCentral());
+		StepHarness.forStep(step).testResource("pom/pom_dirty.xml", "pom/pom_clean_default.xml");
 	}
 }