1 files changed, 35 insertions, 0 deletions
diff --git a/mobile/android/geckoview/src/androidTest/java/org/mozilla/geckoview/test/TemporaryProfileRule.java b/mobile/android/geckoview/src/androidTest/java/org/mozilla/geckoview/test/TemporaryProfileRule.java
new file mode 100644
index 0000000000..ee503af732
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/java/org/mozilla/geckoview/test/TemporaryProfileRule.java
@@ -0,0 +1,35 @@
+package org.mozilla.geckoview.test;
+
+import java.io.File;
+import java.io.IOException;
+import org.junit.rules.ExternalResource;
+import org.junit.rules.TemporaryFolder;
+import org.mozilla.geckoview.test.rule.TestHarnessException;
+
+/** Lazily provides a temporary profile folder for tests. */
+public class TemporaryProfileRule extends ExternalResource {
+  TemporaryFolder mTemporaryFolder;
+  File mProfileFolder;
+
+  @Override
+  protected void after() {
+    if (mTemporaryFolder != null) {
+      mTemporaryFolder.delete();
+      mProfileFolder = null;
+    }
+  }
+
+  public File get() {
+    if (mProfileFolder == null) {
+      mTemporaryFolder = new TemporaryFolder();
+      try {
+        mTemporaryFolder.create();
+        mProfileFolder = mTemporaryFolder.newFolder("test-profile");
+      } catch (IOException ex) {
+        throw new TestHarnessException(ex);
+      }
+    }
+
+    return mProfileFolder;
+  }
+}