diff --git a/src/tests/input/mono.tif b/src/tests/input/mono.tif new file mode 100644 index 0000000..53e85bc Binary files /dev/null and b/src/tests/input/mono.tif differ diff --git a/src/tests/output/mono.tif.pdf b/src/tests/output/mono.tif.pdf new file mode 100644 index 0000000..d23e65e Binary files /dev/null and b/src/tests/output/mono.tif.pdf differ