Aggregate coverage - aggregate tests but not publishing (#1040)

Discover a working combination of aggregate usage to enable coverage of subproject testing but publish a single Jar.
Use "scalastyle-test-config.xml" for scalastyle config in tests.
Enable "_" in method names and accept method names ending in "_=".
Re-sync scalastyle-test-config.xml with scalastyle-config.xml
This should finally fix #772.

3 files changed, 16 insertions, 14 deletions

diff --git a/build.sbt b/build.sbt
index f403697f..25b38fe4 100644
--- a/build.sbt
+++ b/build.sbt
@@ -43,6 +43,7 @@ lazy val commonSettings = Seq (
   scalacOptions := Seq("-deprecation", "-feature") ++ scalacOptionsVersion(scalaVersion.value),
   libraryDependencies += "org.scala-lang" % "scala-reflect" % scalaVersion.value,
   addCompilerPlugin("org.scalamacros" % "paradise" % "2.1.0" cross CrossVersion.full),
+  (scalastyleConfig in Test) := (baseDirectory in root).value / "scalastyle-test-config.xml",
   // Use the root project's unmanaged base for all sub-projects.
   unmanagedBase := (unmanagedBase in root).value,
   // Since we want to examine the classpath to determine if a dependency on firrtl is required,
@@ -120,11 +121,13 @@ lazy val chiselSettings = Seq (
 
 lazy val coreMacros = (project in file("coreMacros")).
   settings(commonSettings: _*).
-  settings(publishArtifact := false)
+  // Prevent separate JARs from being generated for coreMacros.
+  settings(skip in publish := true)
 
 lazy val chiselFrontend = (project in file("chiselFrontend")).
   settings(commonSettings: _*).
-  settings(publishArtifact := false).
+  // Prevent separate JARs from being generated for chiselFrontend.
+  settings(skip in publish := true).
   settings(
     scalacOptions := scalacOptions.value ++ Seq(
       "-deprecation",
@@ -153,9 +156,15 @@ lazy val chisel = (project in file(".")).
   settings(commonSettings: _*).
   settings(chiselSettings: _*).
   settings(publishSettings: _*).
-  // Prevent separate JARs from being generated for coreMacros and chiselFrontend.
   dependsOn(coreMacros % "compile-internal;test-internal").
   dependsOn(chiselFrontend % "compile-internal;test-internal").
+  // We used to have to disable aggregation in general in order to suppress
+  //  creation of subproject JARs (coreMacros and chiselFrontend) during publishing.
+  // This had the unfortunate side-effect of suppressing coverage tests and scaladoc generation in subprojects.
+  // The "skip in publish := true" setting in subproject settings seems to be
+  //   sufficient to suppress subproject JAR creation, so we can restore
+  //   general aggregation, and thus get coverage tests and scaladoc for subprojects.
+  aggregate(coreMacros, chiselFrontend).
   settings(
     scalacOptions in Test ++= Seq("-language:reflectiveCalls"),
     scalacOptions in Compile in doc ++= Seq(
@@ -167,14 +176,7 @@ lazy val chisel = (project in file(".")).
       "-doc-title", name.value,
       "-doc-root-content", baseDirectory.value+"/root-doc.txt"
     ),
-    // Disable aggregation in general, but enable it for specific tasks.
-    // Otherwise we get separate Jar files for each subproject and we
-    //  go to great pains to package all chisel3 core code in a single Jar.
-    // If you get errors indicating coverageReport is undefined, be sure
-    //  you have sbt-scoverage in project/plugins.sbt
-    aggregate := false,
-    aggregate in coverageReport := true,
-    // Include macro classes, resources, and sources main JAR.
+    // Include macro classes, resources, and sources main JAR since we don't create subproject JARs.
     mappings in (Compile, packageBin) ++= (mappings in (coreMacros, Compile, packageBin)).value,
     mappings in (Compile, packageSrc) ++= (mappings in (coreMacros, Compile, packageSrc)).value,
     mappings in (Compile, packageBin) ++= (mappings in (chiselFrontend, Compile, packageBin)).value,
diff --git a/scalastyle-config.xml b/scalastyle-config.xml
index e12da8c2..67aa8afe 100644
--- a/scalastyle-config.xml
+++ b/scalastyle-config.xml
@@ -95,7 +95,7 @@
  </check>
  <check level="warning" class="org.scalastyle.scalariform.MethodNamesChecker" enabled="true">
   <parameters>
-   <parameter name="regex"><![CDATA[^[a-z][A-Za-z0-9]*$]]></parameter>
+   <parameter name="regex"><![CDATA[^[a-z][A-Za-z0-9_]*(_=)?$]]></parameter>
    <parameter name="ignoreRegex"><![CDATA[^(\+[&%]?|\-[&%]?|\*|/|%|&|\||\^|<|>|\|\||&&|:=|<>|<=|>=|!=|===|=/=|<<|>>|##|unary_(~|\-%?|!))$]]></parameter>
   </parameters>
  </check>
diff --git a/scalastyle-test-config.xml b/scalastyle-test-config.xml
index bf32aacd..50953819 100644
--- a/scalastyle-test-config.xml
+++ b/scalastyle-test-config.xml
@@ -94,8 +94,8 @@
  </check>
  <check level="warning" class="org.scalastyle.scalariform.MethodNamesChecker" enabled="true">
   <parameters>
-   <parameter name="regex"><![CDATA[^[a-z][A-Za-z0-9]*$]]></parameter>
-   <parameter name="ignoreRegex"><![CDATA[^(\+[&%]?|\-[&%]?|\*|/|%|&|\||\^|<|>|\|\||&&|:=|<>|<=|>=|!=|===|<<|>>|##|unary_(~|\-%?|!))$]]></parameter>
+   <parameter name="regex"><![CDATA[^[a-z][A-Za-z0-9_]*(_=)?$]]></parameter>
+   <parameter name="ignoreRegex"><![CDATA[^(\+[&%]?|\-[&%]?|\*|/|%|&|\||\^|<|>|\|\||&&|:=|<>|<=|>=|!=|===|=/=|<<|>>|##|unary_(~|\-%?|!))$]]></parameter>
   </parameters>
  </check>
  <check level="warning" class="org.scalastyle.scalariform.NumberOfMethodsInTypeChecker" enabled="true">