Add tests.

src/EditorFeatures/CSharpTest/Wrapping/BinaryWrappingTests.cs

@@ -467,6 +467,44 @@ public async Task TestInField()
     bool v = a &&
              b &&
              c;
+}");
+        }
+
+        [Fact, Trait(Traits.Feature, Traits.Features.CodeActionsWrapping)]
+        public async Task TestAdditionEnd()
+        {
+            await TestEndOfLine(
+@"class C {
+    void Bar() {
+        var goo = [||]""now"" + ""is"" + ""the"" + ""time"";
+    }
+}",
+@"class C {
+    void Bar() {
+        var goo = ""now"" +
+                  ""is"" +
+                  ""the"" +
+                  ""time"";
+    }
+}");
+        }
+
+        [Fact, Trait(Traits.Feature, Traits.Features.CodeActionsWrapping)]
+        public async Task TestAdditionBeginning()
+        {
+            await TestBeginningOfLine(
+@"class C {
+    void Bar() {
+        var goo = [||]""now"" + ""is"" + ""the"" + ""time"";
+    }
+}",
+@"class C {
+    void Bar() {
+        var goo = ""now""
+                  + ""is""
+                  + ""the""
+                  + ""time"";
+    }
 }");
         }
     }

src/EditorFeatures/VisualBasicTest/Wrapping/BinaryWrappingTests.vb

@@ -443,6 +443,42 @@ end class",
     dim v = a andalso
             b andalso
             c
+end class")
+        End Function
+
+        <Fact, Trait(Traits.Feature, Traits.Features.CodeActionsWrapping)>
+        Public Async Function TestAdditionEnd() As Task
+            Await TestEndOfLine(
+"class C
+    sub Bar()
+        dim goo = [||]""now"" & ""is"" & ""the"" & ""time""
+    end sub
+end class",
+"class C
+    sub Bar()
+        dim goo = ""now"" &
+                  ""is"" &
+                  ""the"" &
+                  ""time""
+    end sub
+end class")
+        End Function
+
+        <Fact, Trait(Traits.Feature, Traits.Features.CodeActionsWrapping)>
+        Public Async Function TestAdditionBeginning() As Task
+            Await TestBeginningOfLine(
+"class C
+    sub Bar()
+        dim goo = [||]""now"" & ""is"" & ""the"" & ""time""
+    end sub
+end class",
+"class C
+    sub Bar()
+        dim goo = ""now"" _
+                  & ""is"" _
+                  & ""the"" _
+                  & ""time""
+    end sub
 end class")
         End Function
     End Class