IDEA-57233 Editor font antialising/appearance problems on Linux

Corrected JdkBundle tests to skip pure jres. Added Nullables and checks.

platform/lang-impl/src/com/intellij/openapi/util/SwitchBootJdkAction.java

@@ -238,15 +238,20 @@ public class SwitchBootJdkAction extends AnAction implements DumbAware {
   private static final Version JDK8_VERSION = new Version(1, 8, 0);
 
 
+  @NotNull
   private static JdkBundleList findJdkPaths() {
     JdkBundle bootJdk = JdkBundle.createBoot();
 
     JdkBundleList jdkBundleList = new JdkBundleList();
-    jdkBundleList.addBundle(bootJdk, true);
+    if (bootJdk != null) {
+      jdkBundleList.addBundle(bootJdk, true);
+    }
 
     if (bundledJdkFile.exists()) {
       JdkBundle bundledJdk = JdkBundle.createBundle(bundledJdkFile, false, true);
-      jdkBundleList.addBundle(bundledJdk, true);
+      if (bundledJdk != null) {
+        jdkBundleList.addBundle(bundledJdk, true);
+      }
     }
 
     if (SystemInfo.isMac) {

platform/lang-impl/src/com/intellij/util/JdkBundle.java

@@ -63,6 +63,7 @@ public class JdkBundle {
     return new JdkBundle(jvm, nameVersionAndUpdate.first, nameVersionAndUpdate.second, boot, bundled);
   }
 
+  @Nullable
   public static JdkBundle createBoot() {
     File bootJDK = new File(System.getProperty("java.home")).getParentFile();
     if (SystemInfo.isMac) {

platform/lang-impl/src/com/intellij/util/JdkBundleList.java

@@ -32,7 +32,7 @@ public class JdkBundleList {
   private HashMap<String, JdkBundle> bundleMap = new HashMap<String, JdkBundle>();
   private HashMap<String, JdkBundle> nameVersionMap = new HashMap<String, JdkBundle>();
 
-  public void addBundle(JdkBundle bundle, boolean forceOldVersion) {
+  public void addBundle(@NotNull JdkBundle bundle, boolean forceOldVersion) {
     JdkBundle bundleDescr = bundleMap.get(bundle.getBundleAsFile().getAbsolutePath());
     if (bundleDescr == null) {
       addMostRecent(bundle, forceOldVersion);
@@ -43,7 +43,7 @@ public class JdkBundleList {
     }
   }
 
-  private void addMostRecent(JdkBundle bundleDescriptor, boolean forceOldVersion) {
+  private void addMostRecent(@NotNull JdkBundle bundleDescriptor, boolean forceOldVersion) {
     Pair<Version, Integer> versionUpdate = bundleDescriptor.getVersionUpdate();
     boolean updateVersionMap = versionUpdate != null;
     if (!bundleList.isEmpty() && updateVersionMap) {
@@ -73,7 +73,7 @@ public class JdkBundleList {
     }
   }
 
-  public void addBundlesFromLocation(String location, @Nullable Version minVer, @Nullable Version maxVer) {
+  public void addBundlesFromLocation(@NotNull String location, @Nullable Version minVer, @Nullable Version maxVer) {
     File jvmLocation = new File(location);
 
     if (!jvmLocation.exists()) {
@@ -111,7 +111,7 @@ public class JdkBundleList {
     return bundleList;
   }
 
-  public boolean contains(String path) {
+  public boolean contains(@NotNull String path) {
     return bundleMap.keySet().contains(path);
   }
 }

platform/platform-tests/testSrc/com/intellij/util/JdkBundleTest.java

@@ -23,6 +23,7 @@ import org.junit.Test;
 
 import java.io.File;
 
+import static junit.framework.Assert.assertNotNull;
 import static junit.framework.TestCase.*;
 
 public class JdkBundleTest {
@@ -31,6 +32,9 @@ public class JdkBundleTest {
   public void testCreateBundle() throws Exception {
     if (SystemInfo.isWindows) return; // Windows is not supported so far
     File bootJDK = new File(System.getProperty("java.home")).getParentFile();
+
+    if (!new File(bootJDK, "lib/tools.jar").exists()) return; // Skip pure jre
+
     if (SystemInfo.isMac) {
       bootJDK = bootJDK.getParentFile().getParentFile();
     }
@@ -54,6 +58,9 @@ public class JdkBundleTest {
   public void testCreateBoot() throws Exception {
     if (SystemInfo.isWindows) return; // Windows is not supported so far
     File bootJDK = new File(System.getProperty("java.home")).getParentFile();
+
+    if (!new File(bootJDK, "lib/tools.jar").exists()) return; // Skip pure jre
+
     if (SystemInfo.isMac) {
       bootJDK = bootJDK.getParentFile().getParentFile();
     }
@@ -61,6 +68,7 @@ public class JdkBundleTest {
 
     JdkBundle bundle = JdkBundle.createBoot();
 
+    assertNotNull(bundle);
     assertTrue(bundle.isBoot());
     assertFalse(bundle.isBundled());