SONAR-6364 Line number should be unset on closed issues

sonar-core/src/main/java/org/sonar/core/issue/workflow/Function.java

@@ -30,6 +30,7 @@ interface Function {
     Context setAssignee(@Nullable User user);
     Context setResolution(@Nullable String s);
     Context setCloseDate(boolean b);
+    Context setLine(@Nullable Integer line);
   }
 
   void execute(Context context);

sonar-core/src/main/java/org/sonar/core/issue/workflow/FunctionExecutor.java

@@ -77,7 +77,13 @@ public class FunctionExecutor implements BatchComponent, ServerComponent {
     @Override
     public Function.Context setCloseDate(boolean b) {
       updater.setCloseDate(issue, b ? changeContext.date() : null, changeContext);
-      return null;
+      return this;
+    }
+
+    @Override
+    public Function.Context setLine(@Nullable Integer line) {
+      updater.setLine(issue, line);
+      return this;
     }
   }
 }

sonar-core/src/main/java/org/sonar/core/issue/workflow/IssueWorkflow.java

@@ -131,25 +131,25 @@ public class IssueWorkflow implements BatchComponent, ServerComponent, Startable
     builder.transition(Transition.builder("automaticclose")
       .from(Issue.STATUS_OPEN).to(Issue.STATUS_CLOSED)
       .conditions(new IsEndOfLife(true))
-      .functions(new SetEndOfLifeResolution(), new SetCloseDate(true))
+      .functions(new SetEndOfLife(), new SetCloseDate(true))
       .automatic()
       .build())
       .transition(Transition.builder("automaticclose")
         .from(Issue.STATUS_REOPENED).to(Issue.STATUS_CLOSED)
         .conditions(new IsEndOfLife(true))
-        .functions(new SetEndOfLifeResolution(), new SetCloseDate(true))
+        .functions(new SetEndOfLife(), new SetCloseDate(true))
         .automatic()
         .build())
       .transition(Transition.builder("automaticclose")
         .from(Issue.STATUS_CONFIRMED).to(Issue.STATUS_CLOSED)
         .conditions(new IsEndOfLife(true))
-        .functions(new SetEndOfLifeResolution(), new SetCloseDate(true))
+        .functions(new SetEndOfLife(), new SetCloseDate(true))
         .automatic()
         .build())
       .transition(Transition.builder("automaticclose")
         .from(Issue.STATUS_RESOLVED).to(Issue.STATUS_CLOSED)
         .conditions(new IsEndOfLife(true))
-        .functions(new SetEndOfLifeResolution(), new SetCloseDate(true))
+        .functions(new SetEndOfLife(), new SetCloseDate(true))
         .automatic()
         .build())
       .transition(Transition.builder("automaticclosemanual")

sonar-core/src/main/java/org/sonar/core/issue/workflow/SetEndOfLifeResolution.java → sonar-core/src/main/java/org/sonar/core/issue/workflow/SetEndOfLife.java

@@ -22,7 +22,7 @@ package org.sonar.core.issue.workflow;
 import org.sonar.api.issue.Issue;
 import org.sonar.api.issue.internal.DefaultIssue;
 
-public class SetEndOfLifeResolution implements Function {
+public class SetEndOfLife implements Function {
   @Override
   public void execute(Context context) {
     DefaultIssue issue = (DefaultIssue) context.issue();
@@ -34,5 +34,10 @@ public class SetEndOfLifeResolution implements Function {
     } else {
       context.setResolution(Issue.RESOLUTION_FIXED);
     }
+
+    // closed issues are not "tracked" -> the line number does not evolve anymore
+    // when code changes. That's misleading for end-users, so line number
+    // is unset.
+    context.setLine(null);
   }
 }

sonar-core/src/test/java/org/sonar/core/issue/workflow/SetEndOfLifeResolutionTest.java → sonar-core/src/test/java/org/sonar/core/issue/workflow/SetEndOfLifeTest.java

@@ -27,10 +27,10 @@ import static org.assertj.core.api.Assertions.assertThat;
 import static org.junit.Assert.fail;
 import static org.mockito.Mockito.*;
 
-public class SetEndOfLifeResolutionTest {
+public class SetEndOfLifeTest {
 
   Function.Context context = mock(Function.Context.class);
-  SetEndOfLifeResolution function = new SetEndOfLifeResolution();
+  SetEndOfLife function = new SetEndOfLife();
 
   @Test
   public void should_resolve_as_fixed() throws Exception {
@@ -60,4 +60,12 @@ public class SetEndOfLifeResolutionTest {
       verify(context, never()).setResolution(anyString());
     }
   }
+
+  @Test
+  public void line_number_must_be_unset() throws Exception {
+    Issue issue = new DefaultIssue().setEndOfLife(true).setLine(10);
+    when(context.issue()).thenReturn(issue);
+    function.execute(context);
+    verify(context).setLine(null);
+  }
 }