diff --git a/tests/data/bad-definition.data b/tests/data/bad-definition.data
new file mode 100644
index 0000000..2cd728f
--- /dev/null
+++ b/tests/data/bad-definition.data
@@ -0,0 +1,6 @@
+# A non-compressing DAT (DDS-1)
+# The manufacturer, model, and revision strings can be obtained,
+# from the file /proc/scsi/scsi (cat /proc/scsi/scsi).
+manufacturer=XYZ model = "UVW1" {
+mode1 blocksize=
+}
diff --git a/tests/data/incomplete-block.data b/tests/data/incomplete-block.data
new file mode 100644
index 0000000..3a0d6f1
--- /dev/null
+++ b/tests/data/incomplete-block.data
@@ -0,0 +1,4 @@
+# A non-compressing DAT (DDS-1)
+# The manufacturer, model, and revision strings can be obtained,
+# from the file /proc/scsi/scsi (cat /proc/scsi/scsi).
+manufacturer=XYZ model = "UVW1" {
diff --git a/tests/data/large-units.data b/tests/data/large-units.data
new file mode 100644
index 0000000..bab4f4b
--- /dev/null
+++ b/tests/data/large-units.data
@@ -0,0 +1,7 @@
+# A non-compressing DAT (DDS-1)
+# The manufacturer, model, and revision strings can be obtained,
+# from the file /proc/scsi/scsi (cat /proc/scsi/scsi).
+manufacturer=XYZ model = "UVW1" {
+scsi2logical=1 can-bsr can-partitions auto-lock
+mode1 blocksize=1k
+mode2 blocksize=1M }
diff --git a/tests/stinit-parsing.test b/tests/stinit-parsing.test
index 6636fc6..671fd1d 100644
--- a/tests/stinit-parsing.test
+++ b/tests/stinit-parsing.test
@@ -12,3 +12,19 @@
 >>> /No errors found./
 >>>2 /Mode 1 definition: scsi2logical=1 can-bsr=1 auto-lock=0 two-fms=0 drive-buffering=1 buffer-writes read-ahead=1 async-writes=1 can-partitions=0 fast-eom=1 blocksize=0 sili=1   timeout=900  long-timeout=14400     density=0x44 compression=0/
 >>>= 0
+
+# Check units
+./stinit -v -v -p -f tests/data/large-units.data
+>>> /No errors found./
+>>>2 /blocksize=1(k|M)/
+>>>= 0
+
+# Incomplete block
+./stinit -p -v -f tests/data/incomplete-block.data
+>>>2 /End of definition block not found for/
+>>>= 1
+
+# Wrong definition
+./stinit -p -v -f tests/data/bad-definition.data
+>>>2 /Warning: errors in definition for/
+>>>= 1