From 119bedb8d336c568e9ef4a3caa895afb8a84a7b0 Mon Sep 17 00:00:00 2001
From: Pavel Vojtechovsky <p.vojtechovsky@post.cz>
Date: Thu, 17 Nov 2016 15:23:05 +0100
Subject: [PATCH] cache URLs of sourceClasspath to avoid failing of tests

---
 .../spoon/support/StandardEnvironment.java    | 23 +++++++++++--------
 1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/src/main/java/spoon/support/StandardEnvironment.java b/src/main/java/spoon/support/StandardEnvironment.java
index 2d1a1c3e756..87ea9e50864 100644
--- a/src/main/java/spoon/support/StandardEnvironment.java
+++ b/src/main/java/spoon/support/StandardEnvironment.java
@@ -70,6 +70,7 @@ public class StandardEnvironment implements Serializable, Environment {
 	private int warningCount = 0;
 
 	private String[] sourceClasspath = null;
+	private URL[] urlSourceClasspath = null;
 
 	private boolean preserveLineNumbers = false;
 
@@ -367,17 +368,20 @@ public ClassLoader getClassLoader() {
 	 * Creates a URL class path from {@link Environment#getSourceClasspath()}
 	 */
 	public URL[] urlClasspath() {
-		String[] classpath = getSourceClasspath();
-		int length = (classpath == null) ? 0 : classpath.length;
-		URL[] urls = new URL[length];
-		for (int i = 0; i < length; i += 1) {
-			try {
-				urls[i] = new File(classpath[i]).toURI().toURL();
-			} catch (MalformedURLException e) {
-				throw new IllegalStateException("Invalid classpath: " + classpath, e);
+		if (urlSourceClasspath == null) {
+			String[] classpath = getSourceClasspath();
+			int length = (classpath == null) ? 0 : classpath.length;
+			URL[] urls = new URL[length];
+			for (int i = 0; i < length; i += 1) {
+				try {
+					urls[i] = new File(classpath[i]).toURI().toURL();
+				} catch (MalformedURLException e) {
+					throw new IllegalStateException("Invalid classpath: " + classpath, e);
+				}
 			}
+			urlSourceClasspath = urls;
 		}
-		return urls;
+		return urlSourceClasspath;
 	}
 
 	@Override
@@ -389,6 +393,7 @@ public String[] getSourceClasspath() {
 	public void setSourceClasspath(String[] sourceClasspath) {
 		verifySourceClasspath(sourceClasspath);
 		this.sourceClasspath = sourceClasspath;
+		urlSourceClasspath = null;
 	}
 
 	private void verifySourceClasspath(String[] sourceClasspath) throws InvalidClassPathException {