Change SOURCE_DATE_EPOCH test date, to use two-digits numbers for month, day of month and times.

Alexis Bienvenüe · Alexis Bienvenüe · commit c007f4998a3e · 2016-07-11T09:51:52.000+02:00
This way we don't mind if timestamps are written with leading 0 or space.
diff --git a/lib/matplotlib/testing/determinism.py b/lib/matplotlib/testing/determinism.py
@@ -14,7 +14,7 @@ def _test_determinism_save(filename, objects='mhi', format="pdf"):
     # to a constant value, so that time difference is not
     # taken into account
     sde = os.environ.pop('SOURCE_DATE_EPOCH', None)
-    os.environ['SOURCE_DATE_EPOCH'] = "946684800"
+    os.environ['SOURCE_DATE_EPOCH'] = "976875010"
 
     fig = plt.figure()
 
@@ -100,7 +100,7 @@ def _test_determinism(objects='mhi', format="pdf", uid=""):
 def _test_source_date_epoch(format, string, keyword=b"CreationDate"):
     """
     Test SOURCE_DATE_EPOCH support. Output a document with the envionment
-    variable SOURCE_DATE_EPOCH set to 2000-01-01 00:00 UTC and check that the
+    variable SOURCE_DATE_EPOCH set to 2000-12-15 10:10:10 UTC and check that the
     document contains the timestamp that corresponds to this date (given as an
     argument).
 
@@ -109,7 +109,7 @@ def _test_source_date_epoch(format, string, keyword=b"CreationDate"):
     format : str
         format string, such as "pdf".
     string : str
-        timestamp string for 2000-01-01 00:00 UTC.
+        timestamp string for 2000-12-15 10:10:10 UTC.
     keyword : str
         a string to look at when searching for the timestamp in the document
         (used in case the test fails).
diff --git a/lib/matplotlib/tests/test_backend_pdf.py b/lib/matplotlib/tests/test_backend_pdf.py
@@ -114,7 +114,7 @@ def test_composite_image():
 @cleanup
 def test_source_date_epoch():
     """Test SOURCE_DATE_EPOCH support for PDF output"""
-    _test_source_date_epoch("pdf", b"/CreationDate (D:20000101000000Z)")
+    _test_source_date_epoch("pdf", b"/CreationDate (D:20001215101010Z)")
 
 
 @cleanup
diff --git a/lib/matplotlib/tests/test_backend_ps.py b/lib/matplotlib/tests/test_backend_ps.py
@@ -181,9 +181,9 @@ def test_source_date_epoch():
     """Test SOURCE_DATE_EPOCH support for PS output"""
     # SOURCE_DATE_EPOCH support is not tested with text.usetex,
     # because the produced timestamp comes from ghostscript:
-    # %%CreationDate: D:20000101000000Z00\'00\', and this could change
+    # %%CreationDate: D:20001215101010Z00\'00\', and this could change
     # with another ghostscript version.
-    _test_source_date_epoch("ps", b"%%CreationDate: Sat Jan  1 00:00:00 2000")
+    _test_source_date_epoch("ps", b"%%CreationDate: Fri Dec 15 10:10:10 2000")
 
 
 @cleanup
