diff --git a/tests/cases b/tests/cases
new file mode 100644
index 0000000..80637c7
--- /dev/null
+++ b/tests/cases
@@ -0,0 +1,10 @@
+57005
+1101111010101101b
+0xDEAD
+57005+28502
+1101111010101101b-110111101010110b
+0xDEAD*0x6F56
+57005/28502
+0xDEAD*4294967295
+0x6F56-0xDEAD
+0xDEAD/0
diff --git a/tests/expected b/tests/expected
new file mode 100644
index 0000000..3f052d0
--- /dev/null
+++ b/tests/expected
@@ -0,0 +1,10 @@
+57005 0xDEAD 1101111010101101b
+57005 0xDEAD 1101111010101101b
+57005 0xDEAD 1101111010101101b
+85507 0x14E03 10100111000000011b
+28503 0x6F57 110111101010111b
+1624756510 0x60D7D11E 1100000110101111101000100011110b
+2 0x2 10b
+calc: failed to calculate
+calc: failed to calculate
+calc: failed to calculate
diff --git a/tests/tests.sh b/tests/tests.sh
new file mode 100644
index 0000000..5d49697
--- /dev/null
+++ b/tests/tests.sh
@@ -0,0 +1,2 @@
+cat cases | ../netcalc -c > results
+diff expected results