diff --git a/tools/test_data/clb_ff/design.segp b/tools/test_data/clb_ff/design.segp
new file mode 100644
index 00000000..2e0bd01d
--- /dev/null
+++ b/tools/test_data/clb_ff/design.segp
@@ -0,0 +1,17 @@
+
+seg SEG_HCLK_L_X31Y130
+tag HCLK_L.ENABLE_BUFFER.HCLK_CK_BUFHCLK8
+tag HCLK_L.HCLK_LEAF_CLK_B_BOTL5.HCLK_CK_BUFHCLK8
+
+seg SEG_CLBLM_L_X10Y102
+tag CLBLM_L.SLICEM_X0.AFF.DMUX.AX
+tag CLBLM_L.SLICEM_X0.AFF.ZINI
+tag CLBLM_L.SLICEM_X0.AFF.ZRST
+tag CLBLM_L.SLICEM_X0.CEUSEDMUX
+tag CLBLM_L.SLICEM_X0.SRUSEDMUX
+tag INT_L.BYP_ALT0.EE2END0
+tag INT_L.BYP_ALT1.EL1END1
+tag INT_L.CLK_L1.GCLK_L_B11_WEST
+tag INT_L.CTRL_L1.ER1END2
+tag INT_L.FAN_ALT7.BYP_BOUNCE0
+tag INT_L.WW2BEG0.LOGIC_OUTS_L4
diff --git a/tools/test_data/clb_lut/design.segp b/tools/test_data/clb_lut/design.segp
new file mode 100644
index 00000000..371afecd
--- /dev/null
+++ b/tools/test_data/clb_lut/design.segp
@@ -0,0 +1,22 @@
+
+seg SEG_CLBLM_L_X10Y102
+tag CLBLM_L.SLICEM_X0.ALUT.INIT[00]
+tag CLBLM_L.SLICEM_X0.ALUT.INIT[08]
+tag CLBLM_L.SLICEM_X0.ALUT.INIT[10]
+tag CLBLM_L.SLICEM_X0.ALUT.INIT[11]
+tag CLBLM_L.SLICEM_X0.ALUT.INIT[13]
+tag CLBLM_L.SLICEM_X0.ALUT.INIT[14]
+tag CLBLM_L.SLICEM_X0.ALUT.INIT[15]
+tag CLBLM_L.SLICEM_X0.ALUT.INIT[41]
+tag CLBLM_L.SLICEM_X0.ALUT.INIT[43]
+tag CLBLM_L.SLICEM_X0.ALUT.INIT[44]
+tag CLBLM_L.SLICEM_X0.ALUT.INIT[46]
+tag CLBLM_L.SLICEM_X0.ALUT.INIT[47]
+tag CLBLM_L.SLICEM_X0.ALUT.INIT[63]
+tag INT_L.IMUX_L1.EE2END0
+tag INT_L.IMUX_L11.EL1END1
+tag INT_L.IMUX_L2.EE2END1
+tag INT_L.IMUX_L4.EE2END2
+tag INT_L.IMUX_L7.EE2END3
+tag INT_L.IMUX_L8.EL1END0
+tag INT_L.WW2BEG0.LOGIC_OUTS_L12
diff --git a/tools/test_segprint2fasm.py b/tools/test_segprint2fasm.py
new file mode 100644
index 00000000..14b3b401
--- /dev/null
+++ b/tools/test_segprint2fasm.py
@@ -0,0 +1,44 @@
+import segprint2fasm
+
+import unittest
+import StringIO
+import re
+
+
+class TestStringMethods(unittest.TestCase):
+    def check_segprint_fasm_equiv(self, segp_fn, fasm_fn):
+        fout = StringIO.StringIO()
+        segprint2fasm.run(open(segp_fn, 'r'), fout)
+        fasm_out = fout.getvalue()
+
+        fasm_ref = open(fasm_fn, 'r').read()
+
+        def normalize(fasm):
+            '''Remove all comments and sort'''
+            ret = []
+            for l in fasm.split('\n'):
+                # Remove comments
+                i = l.rfind('#')
+                if i >= 0:
+                    l = l[0:i]
+                l = l.strip()
+                if not l:
+                    continue
+                ret.append(l)
+            return sorted(ret)
+
+        fasm_out = normalize(fasm_out)
+        fasm_ref = normalize(fasm_ref)
+        self.assertEquals(fasm_ref, fasm_out)
+
+    def test_lut_int(self):
+        self.check_segprint_fasm_equiv(
+            'test_data/clb_lut/design.segp', 'test_data/lut_int.fasm')
+
+    def test_ff_int(self):
+        self.check_segprint_fasm_equiv(
+            'test_data/clb_ff/design.segp', 'test_data/ff_int.fasm')
+
+
+if __name__ == '__main__':
+    unittest.main()