fixed search for non-existent coverage file. also updated the demo

examples/python/umbrella

@@ -0,0 +1 @@
python umbrella.py &> /dev/null

examples/python/umbrella.py

@@ -0,0 +1,40 @@
#!/usr/bin/python
import coverage
import os
import unittest
# Store our output to the file
output = ""
# Start the coverage
cov = coverage.coverage()
cov.start()
# Dynamically get all the test cases we can find.
suite = unittest.TestSuite()
suite.addTests(unittest.TestLoader().discover(os.getcwd(), pattern="*.py"))
# Run the tests
unittest.TextTestRunner().run(suite)
# Stop coverage and save the stats
cov.stop()
cov.save()
# Iterate through the tested files
for source in cov.data.measured_files():
    for a in [cov.analysis2(source)]:
        output += "{0};{1};{2};{3};\n".format(
                a[0], 
                ",".join(str(x) for x in a[1]), 
                ",".join(str(x) for x in a[2]), 
                ",".join(str(x) for x in a[3]))
# Write the coverage report for umbrella
fileName = ".umbrella-coverage"
if os.path.isfile(fileName):
    os.remove(fileName)
f = open(fileName, "w")
f.write(output)
f.close()

plugin/umbrella.vim

@@ -78,7 +78,7 @@ function! s:ShowCoverage()
        return
    endif
    if exists('g:umbrella_root') && exists('g:umbrella_coverage')
    if exists('g:umbrella_root') && exists('g:umbrella_coverage') && filereadable(g:umbrella_coverage)
        exec "cd! " . g:umbrella_root
        for line in readfile(g:umbrella_coverage)
            let parts = split(l:line, ";")