Add tests for the index functions.

2 files changed, 15 insertions, 1 deletions

diff --git a/testdata/create-testfs1.sh b/testdata/create-testfs1.sh
index 65dac63..ba8badf 100644
--- a/testdata/create-testfs1.sh
+++ b/testdata/create-testfs1.sh
@@ -6,20 +6,34 @@ if [ "`whoami`" != "root" ]; then
     exit 1
 fi
 
-dd if=/dev/zero of=testfs1 bs=1k count=1025
+dd if=/dev/zero of=testfs1 bs=1k count=2048
 mkntfs -c 512 -L mylabel -F testfs1
 
 mkdir mnt
 mount -t ntfs-3g -o loop testfs1 mnt
 cd mnt
 
+# Create a file with a specific modification time that we can check.
 touch -m -t 202101011337 empty-file
+
+# Create some zeroed files, as allocated and sparse files.
 dd if=/dev/zero of=file-with-5-zeros bs=1 count=5
 dd if=/dev/zero of=big-sparse-file skip=5M bs=1 count=1
 
+# Create subdirectories of subdirectories.
 mkdir -p subdir/subsubdir
+
+# Create a file with some basic real content.
 echo abcdef > subdir/subsubdir/file-with-6-letters
 
+# Create so many directories that the filesystem needs an INDEX_ROOT and INDEX_ALLOCATION.
+mkdir many_subdirs
+cd many_subdirs
+for i in {1..512}; do
+    mkdir $i
+done
+cd ..
+
 cd ..
 umount mnt
 rmdir mnt
diff --git a/testdata/testfs1 b/testdata/testfs1
index 4afb44a..9d16e0e 100644
--- a/testdata/testfs1
+++ b/testdata/testfs1