diff --git a/src/components/TreeMode.js b/src/components/TreeMode.js
index 1170428..449fb47 100644
--- a/src/components/TreeMode.js
+++ b/src/components/TreeMode.js
@@ -364,7 +364,6 @@ export default class TreeMode extends Component {
     // TODO: implement handleInsertStructure
     console.log('TODO: handleInsertStructure', path)
     alert('not yet implemented...')
-
   }
 
   handleAppend = (parentPath, type) => {
diff --git a/test/eson.test.js b/test/eson.test.js
index 3ea22f8..edbe119 100644
--- a/test/eson.test.js
+++ b/test/eson.test.js
@@ -275,8 +275,8 @@ test('previousSearchResult', t => {
 
 test('selection (object)', t => {
   const selection = {
-    start: {path: ['obj', 'arr', '2', 'last']},
-    end: {path: ['nill']}
+    start: ['obj', 'arr', '2', 'last'],
+    end: ['nill']
   }
 
   const actual = applySelection(ESON1, selection)
@@ -291,8 +291,8 @@ test('selection (object)', t => {
 
 test('selection (array)', t => {
   const selection = {
-    start: {path: ['obj', 'arr', '1']},
-    end: {path: ['obj', 'arr', '0']} // note the "wrong" order of start and end
+    start: ['obj', 'arr', '1'],
+    end: ['obj', 'arr', '0'] // note the "wrong" order of start and end
   }
 
   const actual = applySelection(ESON1, selection)
@@ -307,8 +307,8 @@ test('selection (array)', t => {
 
 test('selection (value)', t => {
   const selection = {
-    start: {path: ['obj', 'arr', '2', 'first']},
-    end: {path: ['obj', 'arr', '2', 'first']}
+    start: ['obj', 'arr', '2', 'first'],
+    end: ['obj', 'arr', '2', 'first']
   }
 
   const actual = applySelection(ESON1, selection)
@@ -318,8 +318,8 @@ test('selection (value)', t => {
 
 test('selection (node)', t => {
   const selection = {
-    start: {path: ['obj', 'arr']},
-    end: {path: ['obj', 'arr']}
+    start: ['obj', 'arr'],
+    end: ['obj', 'arr']
   }
 
   const actual = applySelection(ESON1, selection)
@@ -329,8 +329,8 @@ test('selection (node)', t => {
 
 test('pathsFromSelection (object)', t => {
   const selection = {
-    start: {path: ['obj', 'arr', '2', 'last']},
-    end: {path: ['nill']}
+    start: ['obj', 'arr', '2', 'last'],
+    end: ['nill']
   }
 
   t.deepEqual(pathsFromSelection(ESON1, selection), [
@@ -342,8 +342,8 @@ test('pathsFromSelection (object)', t => {
 
 test('pathsFromSelection (array)', t => {
   const selection = {
-    start: {path: ['obj', 'arr', '1']},
-    end: {path: ['obj', 'arr', '0']} // note the "wrong" order of start and end
+    start: ['obj', 'arr', '1'],
+    end: ['obj', 'arr', '0'] // note the "wrong" order of start and end
   }
 
   t.deepEqual(pathsFromSelection(ESON1, selection), [
@@ -354,8 +354,8 @@ test('pathsFromSelection (array)', t => {
 
 test('pathsFromSelection (value)', t => {
   const selection = {
-    start: {path: ['obj', 'arr', '2', 'first']},
-    end: {path: ['obj', 'arr', '2', 'first']}
+    start: ['obj', 'arr', '2', 'first'],
+    end: ['obj', 'arr', '2', 'first']
   }
 
   t.deepEqual(pathsFromSelection(ESON1, selection), [
@@ -363,6 +363,22 @@ test('pathsFromSelection (value)', t => {
   ])
 })
 
+test('pathsFromSelection (before)', t => {
+  const selection = {
+    before: ['obj', 'arr', '2', 'first']
+  }
+
+  t.deepEqual(pathsFromSelection(ESON1, selection), [])
+})
+
+test('pathsFromSelection (after)', t => {
+  const selection = {
+    after: ['obj', 'arr', '2', 'first']
+  }
+
+  t.deepEqual(pathsFromSelection(ESON1, selection), [])
+})
+
 // helper function to replace all id properties with a constant value
 function replaceIds (data, value = '[ID]') {
   if (data.type === 'Object') {