Add logblame and some log buffer tests.

A utility to read a logcat and print statistics about who is spamming the log.
And tests that use it

Bug: 37252687
Test: ./test_analyze.py ; test_logs.py ; test_ps.py
Change-Id: I811ba482b4be9779047f97c3f3b7ea5f996bd503

tools/logblame/test_logs.py

@@ -0,0 +1,179 @@
+#!/usr/bin/env python2.7 -B
+
+import logs
+import ps
+
+import datetime
+import StringIO
+
+def test_empty():
+  """Test parsing no tag and no text, not well formed."""
+  expected = [ logs.LogLine(None, "03-29 00:46:58.872", "1000", "1815", "1816", "I", "",
+      "") ]
+  text = """[ 03-29 00:46:58.872  1000: 1815: 1816 I/ ]
+
+"""
+  check_parsing(expected, text)
+
+
+def test_none():
+  """Test parsing no tag and no text."""
+  expected = [ logs.LogLine(None, "03-29 00:46:58.872", "1000", "1815", "1816", "I", "",
+      "") ]
+  text = """[ 03-29 00:46:58.872  1000: 1815: 1816 I/ ]
+"""
+  check_parsing(expected, text)
+
+
+
+def test_trailing_blank():
+  """Test parsing text containing an extra intended newline at the end."""
+  expected = [ logs.LogLine(None, "03-29 00:46:58.872", "1000", "1815", "1816", "I", "abcd",
+      "Newline after\n") ]
+  text = """[ 03-29 00:46:58.872  1000: 1815: 1816 I/abcd ]
+Newline after
+
+
+"""
+  check_parsing(expected, text)
+
+
+def test_blank_between():
+  """Test parsing text containing a newline in the middle."""
+  expected = [ logs.LogLine(None, "03-29 00:46:58.872", "1000", "1815", "1816", "I", "abcd",
+      "Message\n\nNewline between") ]
+  text = """[ 03-29 00:46:58.872  1000: 1815: 1816 I/abcd ]
+Message
+
+Newline between
+
+"""
+  check_parsing(expected, text)
+
+
+def test_preceeding_blank():
+  """Test parsing text containing a newline then text."""
+  expected = [ logs.LogLine(None, "03-29 00:46:58.872", "1000", "1815", "1816", "I", "abcd",
+      "\nNewline before") ]
+  text = """[ 03-29 00:46:58.872  1000: 1815: 1816 I/abcd ]
+
+Newline before
+
+"""
+  check_parsing(expected, text)
+
+
+def test_one_blank():
+  """Test parsing text one blank line."""
+  expected = [ logs.LogLine(None, "03-29 00:46:58.872", "1000", "1815", "1816", "I", "abcd",
+      "\n") ]
+  text = """[ 03-29 00:46:58.872  1000: 1815: 1816 I/abcd ]
+
+
+"""
+  check_parsing(expected, text)
+
+
+def test_two_blanks():
+  """Test parsing text two blank lines."""
+  expected = [ logs.LogLine(None, "03-29 00:46:58.872", "1000", "1815", "1816", "I", "abcd",
+      "\n\n") ]
+  text = """[ 03-29 00:46:58.872  1000: 1815: 1816 I/abcd ]
+
+
+
+"""
+  check_parsing(expected, text)
+
+
+def test_two_lines_noblanks():
+  """Test parsing two lines of text with no blank lines."""
+  expected = [ logs.LogLine(None, "03-29 00:46:58.872", "1000", "1815", "1816", "I", "abcd",
+      "One\nTwo") ]
+  text = """[ 03-29 00:46:58.872  1000: 1815: 1816 I/abcd ]
+One
+Two
+
+"""
+  check_parsing(expected, text)
+
+
+def test_chatty():
+  """Test a log with chatty identical messages."""
+
+  expected = [
+      logs.LogLine("system", "03-29 00:46:58.857", "1000", "1815", "1816", "I", "Noisy", "Message"),
+      logs.LogLine("system", "03-29 00:46:58.858", "1000", "1815", "1816", "I", "Noisy", "Message"),
+      logs.LogLine("system", "03-29 00:46:58.858", "1000", "1815", "1816", "I", "Noisy", "Message"),
+      logs.LogLine("system", "03-29 00:46:58.858", "1000", "1815", "1816", "I", "Noisy", "Message"),
+      logs.LogLine("system", "03-29 00:46:58.859", "1000", "1815", "1816", "I", "Noisy", "Message"),
+      ]
+  text = """--------- beginning of system
+[ 03-29 00:46:58.857  1000: 1815: 1816 I/Noisy ]
+Message
+
+[ 03-29 00:46:58.858  1000: 1815: 1816 I/chatty ]
+uid=1000(system) Thread-6 identical 3 lines
+
+[ 03-29 00:46:58.859  1000: 1815: 1816 I/Noisy ]
+Message
+
+"""
+  check_parsing(expected, text)
+
+
+
+def test_normal():
+  """Test a realistic (albeit short) log."""
+  expected = [
+      logs.LogLine("system", "03-29 00:46:58.857", "1000", "1815", "1816", "I", "Package: ]Manager",
+        "/system/app/KeyChain changed; collecting certs"),
+      logs.LogLine("system", "03-29 00:46:58.872", "1000", "1815", "1816", "I", "PackageManager",
+        "/system/app/HiddenMenu changed; collecting certs"),
+      logs.LogLine("main", "03-29 00:46:58.872", "1000", "1815", "1816", "I", "PackageManager",
+        "/system/app/HiddenMenu changed; collecting certs"),
+  ]
+  
+  text = """--------- beginning of system
+[ 03-29 00:46:58.857  1000: 1815: 1816 I/Package: ]Manager ]
+/system/app/KeyChain changed; collecting certs
+
+[ 03-29 00:46:58.872  1000: 1815: 1816 I/PackageManager ]
+/system/app/HiddenMenu changed; collecting certs
+
+--------- switch to main
+[ 03-29 00:46:58.872  1000: 1815: 1816 I/PackageManager ]
+/system/app/HiddenMenu changed; collecting certs
+
+"""
+  check_parsing(expected, text)
+
+
+
+def check_parsing(expected, text):
+  """Parse the text and see if it parsed as expected."""
+  processes = ps.ProcessSet()
+  result = [x for x in logs.ParseLogcat(StringIO.StringIO(text), processes)]
+  if result != expected:
+    raise Exception("test failed.\nexpected:\n[%s]\nactual\n[%s]" % (
+        ", ".join([str(r) for r in expected]),
+        ", ".join([str(r) for r in result])))
+
+
+def main():
+  test_empty()
+  test_none()
+  test_trailing_blank()
+  test_blank_between()
+  test_preceeding_blank()
+  test_one_blank()
+  test_two_blanks()
+  test_chatty()
+  test_normal()
+
+
+if __name__ == "__main__":
+    main()
+
+
+# vim: set ts=2 sw=2 sts=2 tw=100 nocindent autoindent smartindent expandtab: