Added some functionality back in and updated unit tests

Author: notzippy

build.gradle

@@ -39,6 +39,7 @@ allprojects {
         }
         test {
             java.srcDir 'src/test/java'
+            resources.srcDirs 'src/main/resources'
         }
     }
 

src/main/java/com/notzippy/intellij/go/intellij/highlighting/GoAnnotator.java

@@ -18,6 +18,7 @@
 
 import com.notzippy.intellij.go.grammar.psi.*;
 import com.notzippy.intellij.go.intellij.GoConstants;
+import com.notzippy.intellij.go.intellij.quickfix.GoEmptySignatureQuickFix;
 import com.notzippy.intellij.go.parser.GoTypes;
 import com.notzippy.intellij.go.grammar.psi.impl.GoCType;
 import com.notzippy.intellij.go.grammar.psi.impl.GoPsiImplUtil;
@@ -185,11 +186,13 @@ else if (element instanceof GoFunctionDeclaration) {
               if (result != null && !result.isVoid()) {
                 Annotation annotation = holder.createErrorAnnotation(result, declaration.getName() +
                                                                              " function must have no arguments and no return values");
+                annotation.registerFix(new GoEmptySignatureQuickFix(declaration));
               }
               GoParameters parameters = signature.getParameters();
               if (!parameters.getParameterDeclarationList().isEmpty()) {
                 Annotation annotation = holder.createErrorAnnotation(parameters, declaration.getName() +
                                                                                  " function must have no arguments and no return values");
+                annotation.registerFix(new GoEmptySignatureQuickFix(declaration));
               }
             }
           }

src/main/java/com/notzippy/intellij/go/intellij/intentions/GoMoveToStructInitializationIntention.java

@@ -53,12 +53,13 @@ public String getFamilyName() {
 
   @Override
   public boolean isAvailable(@NotNull Project project, Editor editor, @NotNull PsiElement element) {
-    return getData(element) != null;
+    boolean available = getData(element) != null;
+    return available;
   }
 
   @Nullable
   private static Data getData(@NotNull PsiElement element) {
-    if (!element.isValid() || !element.isWritable()) return null;
+    if (!element.isValid()) return null; //  removed  || !element.isWritable())
     GoAssignmentStatement assignment = getValidAssignmentParent(element);
     GoReferenceExpression selectedFieldReference = assignment != null ? getFieldReferenceExpression(element, assignment) : null;
     GoCompositeLit compositeLit = selectedFieldReference != null ? getStructLiteralByReference(selectedFieldReference, assignment) : null;
@@ -71,6 +72,9 @@ private static Data getData(@NotNull PsiElement element) {
   @Nullable
   private static GoAssignmentStatement getValidAssignmentParent(@Nullable PsiElement element) {
     GoAssignmentStatement assignment = PsiTreeUtil.getNonStrictParentOfType(element, GoAssignmentStatement.class);
+    if (assignment == null) {
+      assignment = PsiTreeUtil.getNonStrictParentOfType(element.getPrevSibling(), GoAssignmentStatement.class);
+    }
     return assignment != null && assignment.isValid() && getLeftHandElements(assignment).size() == assignment.getExpressionList().size()
            ? assignment : null;
   }

src/main/java/com/notzippy/intellij/go/intellij/quickfix/GoEmptySignatureQuickFix.java

@@ -16,15 +16,15 @@
 
 package com.notzippy.intellij.go.intellij.quickfix;
 
-import com.notzippy.intellij.go.grammar.psi.GoFunctionDeclaration;
-import com.notzippy.intellij.go.grammar.psi.GoSignature;
-import com.notzippy.intellij.go.grammar.psi.impl.GoElementFactory;
 import com.intellij.codeInspection.LocalQuickFixAndIntentionActionOnPsiElement;
 import com.intellij.openapi.editor.Editor;
 import com.intellij.openapi.project.Project;
 import com.intellij.psi.PsiElement;
 import com.intellij.psi.PsiFile;
 import com.intellij.util.ObjectUtils;
+import com.notzippy.intellij.go.grammar.psi.GoFunctionDeclaration;
+import com.notzippy.intellij.go.grammar.psi.GoSignature;
+import com.notzippy.intellij.go.grammar.psi.impl.GoElementFactory;
 import org.jetbrains.annotations.Nls;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;

src/test/java/com/notzippy/intellij/go/intellij/stubs/GoPackageClauseStubTest.java

@@ -43,7 +43,7 @@ public void tryClosure() {
         }
         catch (AssertionError e) {
           String message = e.getMessage();
-          assertTrue(message.contains("Access to tree elements not allowed in tests"));
+          assertTrue(message.contains("Access to tree elements not allowed"));
           assertTrue(message.contains("bar.go"));
           throw e;
         }