improved test

tests/test_sigmffile_collection.py

@@ -4,9 +4,23 @@
 
 
 def test_archive(test_sigmffile, test_alternate_sigmffile, test_alternate_sigmffile_2):
-    input_sigmffile_collection = SigMFFileCollection(sigmffiles=[test_sigmffile, test_alternate_sigmffile])
+    input_sigmffile_collection1 = SigMFFileCollection(sigmffiles=[test_sigmffile])
     with tempfile.NamedTemporaryFile(suffix=".sigmf") as t_file:
-        input_sigmffile_collection.archive(fileobj=t_file)
-        output_sigmf_collection = fromarchive(archive_path=t_file.name)
-        assert output_sigmf_collection.sigmffile_count() == 2
-        assert output_sigmf_collection.get_sigmffiles() == [test_sigmffile, test_alternate_sigmffile]
+        input_sigmffile_collection1.archive(fileobj=t_file)
+        output_sigmf_collection1 = fromarchive(archive_path=t_file.name)
+        assert output_sigmf_collection1.sigmffile_count() == 1
+        assert output_sigmf_collection1.get_sigmffiles() == [test_sigmffile]
+
+    input_sigmffile_collection2 = SigMFFileCollection(sigmffiles=[test_sigmffile, test_alternate_sigmffile])
+    with tempfile.NamedTemporaryFile(suffix=".sigmf") as t_file:
+        input_sigmffile_collection2.archive(fileobj=t_file)
+        output_sigmf_collection2 = fromarchive(archive_path=t_file.name)
+        assert output_sigmf_collection2.sigmffile_count() == 2
+        assert output_sigmf_collection2.get_sigmffiles() == [test_sigmffile, test_alternate_sigmffile]
+
+    input_sigmffile_collection3 = SigMFFileCollection(sigmffiles=[test_sigmffile, test_alternate_sigmffile, test_alternate_sigmffile_2])
+    with tempfile.NamedTemporaryFile(suffix=".sigmf") as t_file:
+        input_sigmffile_collection3.archive(fileobj=t_file)
+        output_sigmf_collection3 = fromarchive(archive_path=t_file.name)
+        assert output_sigmf_collection3.sigmffile_count() == 3
+        assert output_sigmf_collection3.get_sigmffiles() == [test_sigmffile, test_alternate_sigmffile, test_alternate_sigmffile_2]