fixup! Clean up any invalid group V1 ids in database.

app/src/test/java/org/thoughtcrime/securesms/testutil/ZkGroupLibraryUtil.java

@@ -0,0 +1,42 @@
+package org.thoughtcrime.securesms.testutil;
+
+import org.signal.zkgroup.internal.Native;
+
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.fail;
+import static org.junit.Assume.assumeNoException;
+
+public final class ZkGroupLibraryUtil {
+
+  private ZkGroupLibraryUtil() {
+  }
+
+  /**
+   * Attempts to initialize the ZkGroup Native class, which will load the native binaries.
+   * <p>
+   * If that fails to link, then on Unix, it will fail as we rely on that for CI.
+   * <p>
+   * If that fails to link, and it's not Unix, it will skip the test via assumption violation.
+   */
+  public static void assumeZkGroupSupportedOnOS() {
+    try {
+      Class.forName(Native.class.getName());
+    } catch (ClassNotFoundException e) {
+      fail();
+    } catch (UnsatisfiedLinkError | NoClassDefFoundError e) {
+      String osName = System.getProperty("os.name");
+
+      if (isUnix(osName)) {
+        fail("Not able to link native ZkGroup on a key OS: " + osName);
+      } else {
+        assumeNoException("Not able to link native ZkGroup on this operating system: " + osName, e);
+      }
+    }
+  }
+
+  private static boolean isUnix(String osName) {
+    assertNotNull(osName);
+    osName = osName.toLowerCase();
+    return osName.contains("nix") || osName.contains("nux") || osName.contains("aix");
+  }
+}