computing coverage works!

compute_coverage.rb

@@ -0,0 +1,44 @@
+class FileCoverage
+  attr_accessor :percentage, :lines
+
+  def initialize(percentage, lines)
+    self.percentage = percentage.to_f
+    self.lines = lines.to_i
+  end
+
+  def lines_tested
+    lines * (percentage / 100.0)
+  end
+end
+
+require 'pathname'
+
+SOURCE_DIR = "/Users/marklarsen/github.com/ocmock"
+COVERAGE_DIR = "."
+
+
+def compute_coverage
+  coverage = coverage_files.map { |cf| compute_coverage_for_source_file(source_file_path_for_object(cf.to_s.gsub(".gcno", ""))) }
+  total_lines = coverage.map(&:lines).inject(:+)
+  total_lines_tested = coverage.map(&:lines_tested).inject(:+)
+  test_coverage = (((total_lines_tested / total_lines) * 100) * 100).round / 100.0
+  puts "TOTAL: #{test_coverage}"
+end
+
+def coverage_files
+  Dir.glob("#{COVERAGE_DIR}/*.gcno").map { |path| Pathname(path) }
+end
+
+def compute_coverage_for_source_file(source_file_pathname)
+  str = `xcrun gcov -object-directory=#{COVERAGE_DIR} #{source_file_pathname}`
+  coverage = nil
+  if str =~ /Lines executed:(\d+\.\d+)% of (\d+)/
+    puts "#{$1}, #{$2}, #{source_file_pathname}"
+    coverage = FileCoverage.new($1.to_f, $2.to_i)
+  end
+  coverage
+end
+
+def source_file_path_for_object(object_name)
+  Dir.glob("#{SOURCE_DIR}/**/#{object_name}.m").map { |path| Pathname(path) }.first
+end