Added minimum coverage constraint feauture

src/luacov/defaults.lua

@@ -17,9 +17,13 @@ return {
   -- using `luacov.tick` module. Default: false.
   tick = false,
 
-  --- Include all files including untested ones in the report
+  --- Include all files including untested ones in the report.
   includeuntested = false,
 
+  --- Minimum coverage requirement required to pass the coverage.
+  --- Default is 0
+  minimumcoverage = 0,
+
   --- Stats file updating frequency for `luacov.tick`.
   -- The lower this value - the more frequently results will be written out to the stats file.
   -- You may want to reduce this value (to, for example, 2) to avoid losing coverage data in

src/luacov/reporter.lua

@@ -320,6 +320,16 @@ local function coverage_to_string(hits, missed)
    return ("%.2f%%"):format(hits/total*100.0)
 end
 
+local function coverage_percentage(hits,missed)
+   local total = hits + missed
+
+   if total == 0 then
+      total = 1
+   end
+
+   return (hits/total*100.0)
+end
+
 function DefaultReporter:on_end()
    self:write(("="):rep(78), "\n")
    self:write("Summary\n")
@@ -384,6 +394,11 @@ function DefaultReporter:on_end()
          end
       end
    end
+
+   if (coverage_percentage(total_hits,total_missed)) < self:config().minimumcoverage then
+      print("Failed to hit the required minimum coverage.")
+      os.exit(1)
+   end
 end
 
 end