test: add coverage-filter to calc coverage for subset

test/coverage-filter.py

@@ -0,0 +1,66 @@
+#!/usr/bin/env python
+#
+# Filter coverage reported by lcov/genhtml
+#
+# Copyright 2012 BlueKitchen GmbH
+#
+from lxml import html
+import sys
+import os
+
+coverage_html_path = "coverage-html/index.html"
+
+summary = {}
+
+def update_category(name, value):
+    old = 0
+    if name in summary:
+        old = summary[name]
+    summary[name] = old + value
+
+def list_category_table():
+    row = "%-11s |%11s |%11s |%11s"
+
+    print( row % ('', 'Hit', 'Total', 'Coverage'))
+    print("------------|------------|------------|------------")
+
+    categories = [ 'Line', 'Function', 'Branch'];
+    for category in categories:
+    	hit   = summary[category + "_hit"]
+    	total = summary[category + "_total"]
+    	coverage = 100.0 * hit / total 
+        print ( row % ( category, hit, total, "%.1f" % coverage))
+
+filter = sys.argv[1:]
+
+print("Parsing HTML Coverage Report")
+
+tree = html.parse(coverage_html_path)
+files = tree.xpath("//td[@class='coverFile']")
+for file in files:
+	row = file.getparent()
+	children = row.getchildren()
+	path = children[0].text_content()
+	lineCov     = children[3].text_content()
+	functionCov = children[5].text_content()
+	branchCov   = children[7].text_content()
+	(lineHit,     lineTotal)     = [int(x) for x in lineCov.split("/")]
+	(functionHit, functionTotal) = [int(x) for x in functionCov.split("/")]
+	(branchHit,   branchTotal)   = [int(x) for x in branchCov.split("/")]
+	# print(path, lineHit, lineTotal, functionHit, functionTotal, branchHit, branchTotal)
+
+	# filter
+	if path in filter:
+		print("- Skipping " + path)
+		continue
+
+	print("- Adding   " + path)
+	update_category('Line_hit', lineHit)
+	update_category('Line_total', lineTotal)
+	update_category('Function_hit', functionHit)
+	update_category('Function_total', functionTotal)
+	update_category('Branch_hit', branchHit)
+	update_category('Branch_total', branchTotal)
+
+print("")
+list_category_table()