Add tests for project (re)creation and name case mismatch

Change-Id: I54589caaf117f7e96faf95f3be1f50710aa82e89

gerrit-server/src/main/java/com/google/gerrit/server/util/HostPlatform.java

@@ -18,14 +18,19 @@ import java.security.AccessController;
 import java.security.PrivilegedAction;
 
 public final class HostPlatform {
-  private static final boolean win32 = computeWin32();
+  private static final boolean win32 = compute("windows");
+  private static final boolean mac = compute("mac");
 
   /** @return true if this JVM is running on a Windows platform. */
   public static boolean isWin32() {
     return win32;
   }
 
-  private static boolean computeWin32() {
+  public static boolean isMac() {
+    return mac;
+  }
+
+  private static boolean compute(String platform) {
     final String osDotName =
         AccessController.doPrivileged(new PrivilegedAction<String>() {
           @Override
@@ -34,7 +39,7 @@ public final class HostPlatform {
           }
         });
     return osDotName != null
-        && osDotName.toLowerCase().contains("windows");
+        && osDotName.toLowerCase().contains(platform);
   }
 
   private HostPlatform() {

gerrit-server/src/test/java/com/google/gerrit/server/git/LocalDiskRepositoryManagerTest.java

@@ -15,9 +15,11 @@
 package com.google.gerrit.server.git;
 
 import static com.google.common.truth.Truth.assertThat;
+import static com.google.common.truth.TruthJUnit.assume;
 
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.server.config.SitePaths;
+import com.google.gerrit.server.util.HostPlatform;
 import com.google.gerrit.testutil.TempFileUtil;
 import com.google.gwtorm.client.KeyUtil;
 import com.google.gwtorm.server.StandardKeyEncoder;
@@ -34,6 +36,7 @@ import org.junit.Before;
 import org.junit.Test;
 
 import java.io.IOException;
+import java.nio.file.Files;
 import java.nio.file.Path;
 
 public class LocalDiskRepositoryManagerTest extends EasyMockSupport {
@@ -164,6 +167,21 @@ public class LocalDiskRepositoryManagerTest extends EasyMockSupport {
     repoManager.createRepository(new Project.NameKey("project\\rA"));
   }
 
+  @Test(expected = IllegalStateException.class)
+  public void testProjectRecreation() throws Exception {
+    repoManager.createRepository(new Project.NameKey("a"));
+    repoManager.createRepository(new Project.NameKey("a"));
+  }
+
+  @Test(expected = IllegalStateException.class)
+  public void testProjectRecreationAfterRestart() throws Exception {
+    repoManager.createRepository(new Project.NameKey("a"));
+    LocalDiskRepositoryManager newRepoManager =
+        new LocalDiskRepositoryManager(site, cfg);
+    newRepoManager.start();
+    newRepoManager.createRepository(new Project.NameKey("a"));
+  }
+
   @Test
   public void testOpenRepositoryCreatedDirectlyOnDisk() throws Exception {
     Project.NameKey projectA = new Project.NameKey("projectA");
@@ -174,6 +192,42 @@ public class LocalDiskRepositoryManagerTest extends EasyMockSupport {
     assertThat(repoManager.list()).containsExactly(projectA);
   }
 
+  @Test(expected = RepositoryCaseMismatchException.class)
+  public void testNameCaseMismatch() throws Exception {
+    assume().that(HostPlatform.isWin32() || HostPlatform.isMac()).isTrue();
+    repoManager.createRepository(new Project.NameKey("a"));
+    repoManager.createRepository(new Project.NameKey("A"));
+  }
+
+  @Test(expected = RepositoryCaseMismatchException.class)
+  public void testNameCaseMismatchWithSymlink() throws Exception {
+    assume().that(HostPlatform.isWin32() || HostPlatform.isMac()).isTrue();
+    Project.NameKey name = new Project.NameKey("a");
+    repoManager.createRepository(name);
+    createSymLink(name, "b.git");
+    repoManager.createRepository(new Project.NameKey("B"));
+  }
+
+  @Test(expected = RepositoryCaseMismatchException.class)
+  public void testNameCaseMismatchAfterRestart() throws Exception {
+    assume().that(HostPlatform.isWin32() || HostPlatform.isMac()).isTrue();
+    Project.NameKey name = new Project.NameKey("a");
+    repoManager.createRepository(name);
+
+    LocalDiskRepositoryManager newRepoManager =
+        new LocalDiskRepositoryManager(site, cfg);
+    newRepoManager.start();
+    newRepoManager.createRepository(new Project.NameKey("A"));
+  }
+
+  private void createSymLink(Project.NameKey project, String link)
+      throws IOException {
+    Path base = repoManager.getBasePath(project);
+    Path projectDir = base.resolve(project.get() + ".git");
+    Path symlink = base.resolve(link);
+    Files.createSymbolicLink(symlink, projectDir);
+  }
+
   @Test(expected = RepositoryNotFoundException.class)
   public void testOpenRepositoryInvalidName() throws Exception {
     repoManager.openRepository(new Project.NameKey("project%?|<>A"));