Coverage minima: add more fine-grained control

Along with existing overall coverage, add parameters for statement and
branch minima at the package and file level.

Author: kitbellew

README.md

@@ -337,6 +337,10 @@ Read [SBT SCoverage Plugin documentation](https://github.com/scoverage/sbt-scove
                 <configuration>
                     <minimumCoverage>95</minimumCoverage>
                     <minimumCoverageBranchTotal>90</minimumCoverageBranchTotal>
+                    <minimumCoverageStmtPerPackage>90</minimumCoverageStmtPerPackage>
+                    <minimumCoverageBranchPerPackage>85</minimumCoverageBranchPerPackage>
+                    <minimumCoverageStmtPerFile>85</minimumCoverageStmtPerFile>
+                    <minimumCoverageBranchPerFile>80</minimumCoverageBranchPerFile>
                     <failOnMinimumCoverage>true</failOnMinimumCoverage>
                 </configuration>
                 <executions>

src/it/test_coverage_minima/validate.groovy

@@ -23,6 +23,10 @@ try {
             """
             |[ERROR] Coverage is below minimum [50.00% < 95.00%]: Statement:Total
             |[INFO] Coverage is above minimum [100.00% >= 90.00%]: Branch:Total
+            |[ERROR] Coverage is below minimum [0.00% < 90.00%]: Statement:Package:pkg02
+            |[ERROR] Coverage is below minimum [0.00% < 85.00%]: Branch:Package:pkg02
+            |[ERROR] Coverage is below minimum [0.00% < 85.00%]: Statement:File:HelloService1.scala
+            |[ERROR] Coverage is below minimum [0.00% < 80.00%]: Branch:File:HelloService1.scala
             |""".stripMargin()
     )
 

src/main/java/org/scoverage/plugin/SCoverageCheckMojo.java

@@ -36,6 +36,8 @@
 import scoverage.domain.Coverage;
 import scoverage.domain.CoverageMetrics;
 import scoverage.domain.DoubleFormat;
+import scoverage.domain.MeasuredFile;
+import scoverage.domain.MeasuredPackage;
 import scoverage.reporter.IOUtils;
 import scoverage.serialize.Serializer;
 
@@ -94,6 +96,46 @@ public class SCoverageCheckMojo
     @Parameter( property = "scoverage.minimumCoverageBranchTotal", defaultValue = "0" )
     private Double minimumCoverageBranchTotal;
 
+    /**
+     * Required minimum per-package statement coverage.
+     * <br>
+     * <br>
+     * See <a href="https://github.com/scoverage/sbt-scoverage#minimum-coverage">https://github.com/scoverage/sbt-scoverage#minimum-coverage</a> for additional documentation.
+     * <br>
+     */
+    @Parameter( property = "scoverage.minimumCoverageStmtPerPackage", defaultValue = "0" )
+    private Double minimumCoverageStmtPerPackage;
+
+    /**
+     * Required minimum per-package branch coverage.
+     * <br>
+     * <br>
+     * See <a href="https://github.com/scoverage/sbt-scoverage#minimum-coverage">https://github.com/scoverage/sbt-scoverage#minimum-coverage</a> for additional documentation.
+     * <br>
+     */
+    @Parameter( property = "scoverage.minimumCoverageBranchPerPackage", defaultValue = "0" )
+    private Double minimumCoverageBranchPerPackage;
+
+    /**
+     * Required minimum per-file statement coverage.
+     * <br>
+     * <br>
+     * See <a href="https://github.com/scoverage/sbt-scoverage#minimum-coverage">https://github.com/scoverage/sbt-scoverage#minimum-coverage</a> for additional documentation.
+     * <br>
+     */
+    @Parameter( property = "scoverage.minimumCoverageStmtPerFile", defaultValue = "0" )
+    private Double minimumCoverageStmtPerFile;
+
+    /**
+     * Required minimum per-file branch coverage.
+     * <br>
+     * <br>
+     * See <a href="https://github.com/scoverage/sbt-scoverage#minimum-coverage">https://github.com/scoverage/sbt-scoverage#minimum-coverage</a> for additional documentation.
+     * <br>
+     */
+    @Parameter( property = "scoverage.minimumCoverageBranchPerFile", defaultValue = "0" )
+    private Double minimumCoverageBranchPerFile;
+
     /**
      * Fail the build if minimum coverage was not reached.
      * <br>
@@ -186,6 +228,18 @@ public void execute() throws MojoFailureException
 
         boolean ok = checkCoverage( getLog(), "Total", coverage,
                                     minimumCoverage, minimumCoverageBranchTotal, true );
+        for ( MeasuredPackage pkgCoverage : CollectionConverters.asJava( coverage.packages() ) )
+        {
+            if ( !checkCoverage( getLog(), "Package:" + pkgCoverage.name(), pkgCoverage,
+                                 minimumCoverageStmtPerPackage, minimumCoverageBranchPerPackage, false ) )
+                ok = false;
+        }
+        for ( MeasuredFile fileCoverage : CollectionConverters.asJava( coverage.files() ) )
+        {
+            if ( !checkCoverage( getLog(), "File:" + fileCoverage.filename(), fileCoverage,
+                                 minimumCoverageStmtPerFile, minimumCoverageBranchPerFile, false ) )
+                ok = false;
+        }
 
         if ( !ok && failOnMinimumCoverage )
         {