apkverify: add tests for invalid zip format

Bug: n/a
Test: atest --test-mapping .
Change-Id: I286d497dee2ae65b2e0c5f6e48f17122543dc7a3
diff --git a/apkverify/src/lib.rs b/apkverify/src/lib.rs
index 9930099..869431e 100644
--- a/apkverify/src/lib.rs
+++ b/apkverify/src/lib.rs
@@ -18,6 +18,7 @@
 
 mod bytes_ext;
 mod sigutil;
+mod testing;
 mod v3;
 mod ziputil;