1 files changed, 132 insertions, 0 deletions
diff --git a/fdo_scripts/divide_and_merge_profiles_test.py b/fdo_scripts/divide_and_merge_profiles_test.py
new file mode 100755
index 00000000..f42db4e9
--- /dev/null
+++ b/fdo_scripts/divide_and_merge_profiles_test.py
@@ -0,0 +1,132 @@
+#!/usr/bin/python2.6
+#
+# Copyright 2010 Google Inc. All Rights Reserved.
+
+__author__ = "asharif@google.com (Ahmad Sharif)"
+
+import os
+import random
+import shutil
+import tempfile
+import unittest
+
+from utils import command_executer
+from utils import misc
+
+
+class DivideAndMergeProfilesTest(unittest.TestCase):
+  def tearDown(self):
+    shutil.rmtree(self._program_dir)
+    for profile_dir in self._profile_dirs:
+      shutil.rmtree(profile_dir)
+
+  def setUp(self):
+    self._ce = command_executer.GetCommandExecuter()
+    self._program_dir = tempfile.mkdtemp()
+    self._writeProgram()
+    self._writeMakefile()
+    with misc.WorkingDirectory(self._program_dir):
+      self._ce.RunCommand("make")
+    num_profile_dirs = 2
+    self._profile_dirs = []
+    for i in range(num_profile_dirs):
+      profile_dir = tempfile.mkdtemp()
+      command = ("GCOV_PREFIX_STRIP=%s GCOV_PREFIX=$(/bin/pwd) "
+                 " %s/program" %
+                 (profile_dir.count("/"),
+                  self._program_dir))
+      with misc.WorkingDirectory(profile_dir):
+        self._ce.RunCommand(command)
+      self._profile_dirs.append(profile_dir)
+    self._merge_program = "/home/build/static/projects/crosstool/profile-merge/v14.5/profile_merge.par"
+
+  def _writeMakefile(self):
+    makefile_contents = """
+CC = gcc
+
+CFLAGS = -fprofile-generate
+
+SRCS=$(wildcard *.c)
+
+OBJS=$(SRCS:.c=.o)
+
+all: program
+
+program: $(OBJS)
+	$(CC) -o $@ $^ $(CFLAGS)
+
+%.o: %.c
+	$(CC) -c -o $@ $^ $(CFLAGS)"""
+    makefile = os.path.join(self._program_dir, "Makefile")
+    with open(makefile, "w") as f:
+      print >> f, makefile_contents
+
+  def _writeProgram(self, num_files=100):
+    for i in range(num_files):
+      current_file = os.path.join(self._program_dir, "%s.c" % i)
+      with open(current_file, "w") as f:
+        if i != num_files - 1:
+          print >> f, "extern void foo%s();" % (i + 1)
+          print >> f, "void foo%s(){foo%s();}" % (i, i + 1)
+        else:
+          print >> f, "void foo%s(){printf(\"\");}" % i
+        if i == 0:
+          print >> f, "int main(){foo%s(); return 0;}" % i
+
+  def testMerge(self):
+    reference_output = self._getReferenceOutput()
+    my_output = self._getMyOutput()
+
+    ret = self._diffOutputs(reference_output, my_output)
+    shutil.rmtree(my_output)
+    shutil.rmtree(reference_output)
+    self.assertTrue(ret == 0)
+
+  def _diffOutputs(self, reference, mine):
+    command = "diff -uNr %s %s" % (reference, mine)
+    return self._ce.RunCommand(command)
+
+  def _getMyOutput(self, args=""):
+    my_output = tempfile.mkdtemp()
+    my_merge_program = os.path.join(os.path.dirname(__file__),
+                                    "divide_and_merge_profiles.py")
+    command = ("python %s --inputs=%s --output=%s "
+               "--chunk_size=10 "
+               "--merge_program=%s "
+               "%s" %
+               (my_merge_program,
+                ",".join(self._profile_dirs),
+                my_output,
+                self._merge_program,
+                args))
+    self._ce.RunCommand(command)
+    return my_output
+
+  def _getReferenceOutput(self, args=""):
+    # First do a regular merge.
+    reference_output = tempfile.mkdtemp()
+    command = ("%s --inputs=%s --output=%s %s" %
+               (self._merge_program,
+                ",".join(self._profile_dirs),
+                reference_output,
+                args))
+    self._ce.RunCommand(command)
+    return reference_output
+
+  def testMergeWithMultipliers(self):
+    num_profiles = len(self._profile_dirs)
+    multipliers = [str(random.randint(0, num_profiles)) \
+                   for _ in range(num_profiles)]
+    args = "--multipliers=%s" % ",".join(multipliers)
+
+    reference_output = self._getReferenceOutput(args)
+    my_output = self._getMyOutput(args)
+
+    ret = self._diffOutputs(reference_output, my_output)
+
+    shutil.rmtree(my_output)
+    shutil.rmtree(reference_output)
+    self.assertTrue(ret == 0)
+
+if __name__ == "__main__":
+  unittest.main()