Fix propagation of overriden `Module#basePath` and add a test to verify it's behavior

1 files changed, 18 insertions, 1 deletions

diff --git a/core/test/src/mill/define/BasePathTests.scala b/core/test/src/mill/define/BasePathTests.scala
index a0be4762..62f84787 100644
--- a/core/test/src/mill/define/BasePathTests.scala
+++ b/core/test/src/mill/define/BasePathTests.scala
@@ -1,8 +1,9 @@
 package mill.define
 
-import mill.util.TestGraphs
+import mill.util.{TestGraphs, TestUtil}
 import utest._
 import ammonite.ops._
+import mill.{Module, T}
 object BasePathTests extends TestSuite{
   val testGraphs = new TestGraphs
   val tests = Tests{
@@ -44,6 +45,22 @@ object BasePathTests extends TestSuite{
         "cross", "210", "cross2", "js"
       )
     }
+    'overriden - {
+      object overridenBasePath extends TestUtil.BaseModule {
+        override def basePath = pwd / 'overridenBasePathRootValue
+        object nested extends Module{
+          override def basePath = super.basePath / 'overridenBasePathNested
+          object nested extends Module{
+            override def basePath = super.basePath / 'overridenBasePathDoubleNested
+          }
+        }
+      }
+      assert(
+        overridenBasePath.basePath == pwd / 'overridenBasePathRootValue,
+        overridenBasePath.nested.basePath == pwd / 'overridenBasePathRootValue / 'nested / 'overridenBasePathNested,
+        overridenBasePath.nested.nested.basePath == pwd / 'overridenBasePathRootValue / 'nested / 'overridenBasePathNested / 'nested / 'overridenBasePathDoubleNested
+      )
+    }
 
   }
 }