Java to Kotlin converter: fixed a bug with incorrect assignment generation

j2k/src/org/jetbrains/jet/j2k/ast/Expressions.kt

@@ -29,7 +29,7 @@ class ArrayAccessExpression(val expression: Expression, val index: Expression, v
 
 class AssignmentExpression(val left: Expression, val right: Expression, val op: String) : Expression() {
     override fun generateCode(builder: CodeBuilder) {
-        builder.appendOperand(this, left).append(op).appendOperand(this, right)
+        builder.appendOperand(this, left).append(" ").append(op).append(" ").appendOperand(this, right)
     }
 }
 

j2k/tests/test/org/jetbrains/jet/j2k/test/JavaToKotlinConverterTestGenerated.java

@@ -1682,6 +1682,11 @@ public class JavaToKotlinConverterTestGenerated extends AbstractJavaToKotlinConv
             doTest("j2k/tests/testData/ast/issues/qualifyStatic.java");
         }
         
+        @TestMetadata("spaceBeforeAssignment.java")
+        public void testSpaceBeforeAssignment() throws Exception {
+            doTest("j2k/tests/testData/ast/issues/spaceBeforeAssignment.java");
+        }
+        
     }
     
     @TestMetadata("j2k/tests/testData/ast/kotlinApiAccess")

j2k/tests/testData/ast/issues/spaceBeforeAssignment.java

@@ -0,0 +1,6 @@
+//file
+import java.util.*
+
+class A {
+    List<String> list = new ArrayList<String>();
+}

j2k/tests/testData/ast/issues/spaceBeforeAssignment.kt

@@ -0,0 +1,6 @@
+import java.util.*
+import kotlin.List
+
+class A() {
+    var list: List<String> = ArrayList<String>()
+}