fix messages cache when multiple headers

pdura · David Cooper · commit 798035875da1 · 2018-10-12T20:22:14.000-07:00
diff --git a/fitparse/base.py b/fitparse/base.py
@@ -30,6 +30,7 @@ def __init__(self, fileish, check_crc=True, data_processor=None):
         self._file.seek(0, os.SEEK_END)
         self._filesize = self._file.tell()
         self._file.seek(0, os.SEEK_SET)
+        self._messages = []
 
         # Start off by parsing the file header (sets initial attribute values)
         self._parse_file_header()
@@ -98,7 +99,6 @@ def _parse_file_header(self):
         self._compressed_ts_accumulator = 0
         self._crc = Crc()
         self._local_mesgs = {}
-        self._messages = []
 
         header_data = self._read(12)
         if header_data[8:12] != b'.FIT':
diff --git a/tests/files/sample_mulitple_header.fit b/tests/files/sample_mulitple_header.fit
diff --git a/tests/test.py b/tests/test.py
@@ -402,6 +402,11 @@ def test_elemnt_bolt_developer_data_id_without_application_id(self):
         (as seen on ELEMNT BOLT with firmware version WB09-1507)"""
         FitFile(testfile('elemnt-bolt-no-application-id-inside-developer-data-id.fit')).parse()
 
+    def test_multiple_header(self):
+        f = FitFile(testfile('sample_mulitple_header.fit'))
+        assert len(f.messages) == 3023
+
+
     # TODO:
     #  * Test Processors:
     #    - process_type_<>, process_field_<>, process_units_<>, process_message_<>
