cache: add regression test for multifile resolver and kdb cp -rf
@@ -52,3 +52,55 @@ rm -rf $(dirname $(kdb file user))/multitest
kdb umount user/tests/multifile/first.csv
kdb umount user/tests/multifile/empty.csv
```
+
+# Test kdb cp with cache and multifile resolver (refression test)
+
+```sh
+rm -rf $(dirname $(kdb file user))/multitest || $(exit 0)
+mkdir -p $(dirname $(kdb file user))/multitest || $(exit 0)
+
+echo "col1;col2" > $(dirname $(kdb file user))/multitest/first.csv
+echo "l1c1;l2c2" >> $(dirname $(kdb file user))/multitest/first.csv
+echo "l2c1;l2c2" >> $(dirname $(kdb file user))/multitest/first.csv
+
+echo "col1;col2;col3" > $(dirname $(kdb file user))/multitest/other.csv
+echo "l1c1;l2c2;l2c3" >> $(dirname $(kdb file user))/multitest/other.csv
+echo "l2c1;l2c2;l3c3" >> $(dirname $(kdb file user))/multitest/other.csv
+
+echo "" > $(dirname $(kdb file user))/multitest/empty.csv
+
+sudo kdb mount -R multifile -c storage="csvstorage",pattern="*.csv",resolver="resolver" multitest user/tests/multifile
+
+kdb ls user/tests/multifile/first.csv
+#> user/tests/multifile/first.csv/#0
+#> user/tests/multifile/first.csv/#0/#0
+#> user/tests/multifile/first.csv/#1
+#> user/tests/multifile/first.csv/#1/#0
+#> user/tests/multifile/first.csv/#2
+#> user/tests/multifile/first.csv/#2/#0
+
+kdb ls user/tests/multifile/empty.csv
+#> user/tests/multifile/empty.csv/#0
+#> user/tests/multifile/empty.csv/#0/#0
+
+kdb cp -rf user/tests/multifile/first.csv user/tests/multifile/empty.csv
+
+kdb ls user/tests/multifile/first.csv
+#> user/tests/multifile/first.csv/#0
+#> user/tests/multifile/first.csv/#0/#0
+#> user/tests/multifile/first.csv/#1
+#> user/tests/multifile/first.csv/#1/#0
+#> user/tests/multifile/first.csv/#2
+#> user/tests/multifile/first.csv/#2/#0
+
+kdb ls user/tests/multifile/empty.csv
+#> user/tests/multifile/empty.csv/#0
+#> user/tests/multifile/empty.csv/#0/#0
+#> user/tests/multifile/empty.csv/#1
+#> user/tests/multifile/empty.csv/#1/#0
+#> user/tests/multifile/empty.csv/#2
+#> user/tests/multifile/empty.csv/#2/#0
+
+rm -rf $(dirname $(kdb file user))/multitest
+kdb umount user/tests/multifile
+```
