fix: explicitly run headerCreateAll before test

Author: jatcwang

.github/workflows/ci.yml

@@ -68,7 +68,7 @@ jobs:
         run: sbt scalafmtCheckAll 'project /' scalafmtSbtCheck
 
       - name: Test
-        run: sbt freeGen2 test
+        run: sbt freeGen2 headerCreateAll test
 
       - name: Check binary compatibility
         if: matrix.java == 'temurin@11' && matrix.os == 'ubuntu-22.04'

build.sbt

@@ -59,8 +59,10 @@ ThisBuild / githubWorkflowBuild := {
   current.map {
     // Assume step "Test" exists.
     // Prepend command "freeGen2" to the command list of that step.
+    // Also make sure we run headerCreateAll first and let it complete for all subprojects,
+    // otherwise "test" might see half-written files
     case testStep: WorkflowStep.Sbt if testStep.name.contains("Test") =>
-      WorkflowStep.Sbt("freeGen2" :: testStep.commands, name = Some("Test"))
+      WorkflowStep.Sbt("freeGen2" :: "headerCreateAll" :: testStep.commands, name = Some("Test"))
     case other => other
   }
 }