A most trivial test for HotShot -- make sure we get reasonable events

reported and can read the log back in.

Lib/test/test_hotshot.py

+import hotshot
+import hotshot.log
+import os
+import pprint
+import sys
+import unittest
+import warnings
+
+import test_support
+
+from hotshot.log import ENTER, EXIT, LINE
+
+
+def shortfilename(fn):
+    # We use a really shortened filename since an exact match is made,
+    # and the source may be either a Python source file or a
+    # pre-compiled bytecode file.
+    if fn:
+        return os.path.splitext(os.path.basename(fn))[0]
+    else:
+        return fn
+
+
+class HotShotTestCase(unittest.TestCase):
+    def new_profiler(self, lineevents=0, linetimings=1):
+        self.logfn = test_support.TESTFN
+        return hotshot.Profile(self.logfn, lineevents, linetimings)
+
+    def get_logreader(self):
+        log = hotshot.log.LogReader(self.logfn)
+        os.unlink(self.logfn)
+        return log
+
+    def get_events_wotime(self):
+        L = []
+        for event in self.get_logreader():
+            what, (filename, lineno, funcname), tdelta = event
+            L.append((what, (shortfilename(filename), lineno, funcname)))
+        return L
+
+    def check_events(self, expected):
+        events = self.get_events_wotime()
+        if events != expected:
+            self.fail(
+                "events did not match expectation; got:\n%s\nexpected:\n%s"
+                % (pprint.pformat(events), pprint.pformat(expected)))
+
+    def run_test(self, callable, events, profiler=None):
+        if profiler is None:
+            profiler = self.new_profiler()
+        profiler.runcall(callable)
+        profiler.close()
+        self.check_events(events)
+
+    def test_line_numbers(self):
+        def f():
+            y = 2
+            x = 1
+        def g():
+            f()
+        f_lineno = f.func_code.co_firstlineno
+        g_lineno = g.func_code.co_firstlineno
+        events = [(ENTER, ("test_hotshot", g_lineno, "g")),
+                  (LINE,  ("test_hotshot", g_lineno, "g")),
+                  (LINE,  ("test_hotshot", g_lineno+1, "g")),
+                  (ENTER, ("test_hotshot", f_lineno, "f")),
+                  (LINE,  ("test_hotshot", f_lineno, "f")),
+                  (LINE,  ("test_hotshot", f_lineno+1, "f")),
+                  (LINE,  ("test_hotshot", f_lineno+2, "f")),
+                  (EXIT,  ("test_hotshot", f_lineno, "f")),
+                  (EXIT,  ("test_hotshot", g_lineno, "g")),
+                  ]
+        self.run_test(g, events, self.new_profiler(lineevents=1))
+
+
+def test_main():
+    test_support.run_unittest(HotShotTestCase)
+
+
+if __name__ == "__main__":
+    test_main()