diff --git a/unittest/actual-results/test11 b/unittest/actual-results/test11
new file mode 100644
index 00000000..257cc564
--- /dev/null
+++ b/unittest/actual-results/test11
@@ -0,0 +1 @@
+foo
diff --git a/unittest/actual-results/test12 b/unittest/actual-results/test12
new file mode 100644
index 00000000..31eae36e
--- /dev/null
+++ b/unittest/actual-results/test12
@@ -0,0 +1 @@
+75da7edc12b129d109af92592c61da56  -
diff --git a/unittest/tests-to-run/test11.sh b/unittest/tests-to-run/test11.sh
new file mode 100644
index 00000000..91258179
--- /dev/null
+++ b/unittest/tests-to-run/test11.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+
+# Test the empty line
+echo | parallel echo foo
diff --git a/unittest/tests-to-run/test12.sh b/unittest/tests-to-run/test12.sh
new file mode 100644
index 00000000..44a032c6
--- /dev/null
+++ b/unittest/tests-to-run/test12.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+
+# Test if we can deal with output > 4 GB
+echo | parallel 'dd if=/dev/zero count=43 bs=100000k; echo 1; echo 2' | md5sum
diff --git a/unittest/wanted-results/test11 b/unittest/wanted-results/test11
new file mode 100644
index 00000000..257cc564
--- /dev/null
+++ b/unittest/wanted-results/test11
@@ -0,0 +1 @@
+foo
diff --git a/unittest/wanted-results/test12 b/unittest/wanted-results/test12
new file mode 100644
index 00000000..31eae36e
--- /dev/null
+++ b/unittest/wanted-results/test12
@@ -0,0 +1 @@
+75da7edc12b129d109af92592c61da56  -