How to do android emma coverage test in your own ant scipts

from：http://www.cnitblog.com/reene/archive/2011/06/30/74504.html

1.  emma taskdef    <!-- Emma configuration -->

     < property  name ="emma.dir"  value ="${android.sdk.root}/tools/lib"   />
     < path  id ="emma.lib.dir" >
         < pathelement  location ="${emma.dir}/emma.jar"   />
         < pathelement  location ="${emma.dir}/emma_ant.jar"   />
     </ path >
     < taskdef  resource ="emma_ant.properties"  classpathref ="emma.lib.dir"   />
     <!--  End of emma configuration  -->

2.      <!-- - - - - - - - - - - - - - - - - - 

          target: emma-instrument                      
         - - - - - - - - - - - - - - - - -  -->
     < target  name ="emma.instrument"  if ="enable.emma.on.test" >
         < property  name ="emma.enabled"  value ="true"   />
         < echo >Instrumenting classes from ${project.base.dir}/${android.project.dir}/bin,${project.base.dir}/${android.project.dir}/libs/sup-client.jar </ echo >
         <!--  It only instruments class files, not any external libs  -->
         < emma  enabled ="${emma.enabled}" >
             < instr  mode ="overwrite"
                   instrpath ="${project.base.dir}/${android.project.dir}/bin,${project.base.dir}/${android.project.dir}/libs/sup-client.jar"
                   outdir ="${project.base.dir}/${android.project.dir}/bin" >
             </ instr >
             <!--  TODO: exclusion filters on R*.class and allowing custom exclusion from
                         user defined file  -->
         </ emma >
         < echo >Copy emma. to project libs </ echo >
         < copy  todir ="${project.base.dir}/${android.project.dir}/libs"  overwrite ="true" >
              < fileset  dir ="${emma.dir}"  includes ="emma_device.jar" />
         </ copy >
        
     </ target >

3

     <!--  Convert this project's .class files into .dex files.  -->
     < target  name ="dex"  depends ="android-javac" >
         < antcall  target ="emma.instrument" ></ antcall >
         < condition  property ="dx.extra.args"  value ="--no-locals"  else ="" >
             < istrue  value ="${enable.emma.on.test}" />
         </ condition >
         < echo >Converting compiled files and external libraries into dex file  </ echo >
         < apply  executable ="${dx}"  failonerror ="true"  parallel ="true" >
             < arg  value ="--dex"   />
             < arg  value ="${dx.extra.args}"   />
             < arg  value ="--output=${project.base.dir}/${android.project.dir}/bin/classes.dex"   />
             < arg  path ="${project.base.dir}/${android.project.dir}/bin"   />
             < fileset  dir ="${project.base.dir}/${android.project.dir}/libs" >
                 < include  name ="**/*.jar" />
             </ fileset >
         </ apply >
     </ target >

4

< target  name ="run-tests"
                description ="Runs tests from the package defined in test.package property" >
         < property  name ="reports.dir"  value ="${reports.out.dir}/reports" />
         < property  name ="device.reports.dir"  value ="/data/data/${manifest.package}/files/reports/" />
         < echo >Running tests </ echo >
         < exec  executable ="${adb}"  failonerror ="true" >
             < arg  value ="shell"   />
             < arg  value ="am"   />
             < arg  value ="instrument"   />
             < arg  value ="-w"   />
             < arg  value ="-e"   />
             < arg  value ="coverage"   />
             < arg  value ="true"   />
             < arg  value ="-e"   />
             < arg  value ="coverageFile"   />
             < arg  value ="${device.reports.dir}coverage.ec"   />
             < arg  value ="-e"   />
             < arg  value ="junitOutputDirectory"   />
             < arg  value ="${device.reports.dir}"   />
             < arg  value ="-e"   />
             < arg  value ="junitSplitLevel"   />
             < arg  value ="class"   />
             < arg  value ="-e"   />
             < arg  value ="package"   />
             < arg  value ="${test.target.package}"   />
             < arg  value ="${manifest.package}/${test.runner}"   />
         </ exec >

         < echo >Downloading XML test reports </ echo >
         < mkdir  dir ="${reports.dir}" />
         < exec  executable ="${adb}"  failonerror ="true" >
             < arg  value ="pull"   />
             < arg  value ="${device.reports.dir}/"   />
             < arg  value ="${reports.dir}"   />
         </ exec >
         < exec  executable ="${adb}"  failonerror ="true" >
             < arg  value ="pull"   />
             < arg  value ="${device.reports.dir}/"   />
             < arg  value ="${reports.dir}"   />
         </ exec >
     </ target >

5

         < antcall  target ="reinstall" >
             < param  name ="android.project.dir"  value ="end2end_rdb_mbs" />
             < param  name ="android.app.name"  value ="end2end_rdb_mbs" />
             < param  name ="project.base.dir"  value ="${project.home}/android_mbs" />
             < param  name ="enable.emma.on.test"  value ="true" />
         </ antcall >

6

         < antcall  target ="run-tests" >
             < param  name ="android.project.dir"  value ="end2end_rdb_mbs" />
             < param  name ="android.app.name"  value ="end2end_rdb_mbs" />
             < param  name ="project.base.dir"  value ="${project.home}/android_mbs" />
             < param  name ="manifest.package"  value ="end2end.test" />
             < param  name ="test.target.package"  value ="end2end.test.rest.mbs.android" />
             < param  name ="test.runner"  value ="pl.polidea.instrumentation.PolideaInstrumentationTestRunner" />
             < param  name ="enable.emma.on.test"  value ="true" />
         </ antcall >

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如果不想独立弄一个build.xml，可以借助android工具，先将工程转换成ant工程。然后，修改android sdk下/ant/build.xml中的脚本，这样也能很方便的实现支持emma，不过，这样是否能够顺畅地脱离IDE来运行ant脚本，这个没有试验。此思路仅供参考。