Closes #2

The command line argument is matched to formatting used by MFD to
reconstruct the argument (using .16g) formatting. Ideally, all REAL8
should use this formatting.

pyfstat/core.py

@@ -1094,8 +1094,8 @@ transientTauDays={:1.3f}\n""")
         else:
             data_duration = self.maxStartTime - self.minStartTime
             cl_mfd.append('--duration={}'.format(int(data_duration)))
-        cl_mfd.append('--fmin={}'.format(self.fmin))
-        cl_mfd.append('--Band={}'.format(self.Band))
+        cl_mfd.append('--fmin={:.16g}'.format(self.fmin))
+        cl_mfd.append('--Band={:.16g}'.format(self.Band))
         cl_mfd.append('--Tsft={}'.format(self.Tsft))
         if self.h0 != 0:
             cl_mfd.append('--injectionSources="{}"'.format(self.config_file_name))

tests.py

@@ -31,9 +31,10 @@ class TestWriter(Test):
             './TestData/H-4800_H1_1800SFT_Test-700000000-8640000.sft'))
 
     def test_makefakedata_usecached(self):
-        Writer = pyfstat.Writer(self.label, outdir=outdir)
+        Writer = pyfstat.Writer(self.label, outdir=outdir, duration=86400)
         if os.path.isfile(Writer.sftfilepath):
             os.remove(Writer.sftfilepath)
+        Writer.make_cff()
         Writer.run_makefakedata()
         time_first = os.path.getmtime(Writer.sftfilepath)
         Writer.run_makefakedata()