From 29d9541006e6cca63a2472b00b139c2bcd669e46 Mon Sep 17 00:00:00 2001
From: Ryuichi Inagaki <ryuichi.inagaki.24@googlemail.com>
Date: Sat, 18 Jan 2020 19:41:13 +1100
Subject: [PATCH] [#34] Added a test for ObjectStringifier as well

---
 README.md                                | 10 +++++++++-
 src/test/csv-stringifiers/object.test.ts | 20 +++++++++++++++++++-
 2 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index f591824..2f62977 100644
--- a/README.md
+++ b/README.md
@@ -142,6 +142,10 @@ console.log(csvStringifier.stringifyRecords(records));
 
       Default: `\n`. Only either LF (`\n`) or CRLF (`\r\n`) is allowed.
 
+  * keyDelimiter `<string>` (optional)
+
+      Default: `undefined`. Give this value to specify a path to a value in a nested object.
+
   * alwaysQuote `<boolean>` (optional)
 
       Default: `false`. Set it to `true` to double-quote all fields regardless of their values.
@@ -233,7 +237,11 @@ console.log(csvStringifier.stringifyRecords(records));
   * recordDelimiter `<string>` (optional)
 
       Default: `\n`. Only either LF (`\n`) or CRLF (`\r\n`) is allowed.
-  
+
+  * keyDelimiter `<string>` (optional)
+
+      Default: `undefined`. Give this value to specify a path to a value in a nested object.
+
   * alwaysQuote `<boolean>` (optional)
 
       Default: `false`. Set it to `true` to double-quote all fields regardless of their values.
diff --git a/src/test/csv-stringifiers/object.test.ts b/src/test/csv-stringifiers/object.test.ts
index 59c2bc8..f0669ea 100644
--- a/src/test/csv-stringifiers/object.test.ts
+++ b/src/test/csv-stringifiers/object.test.ts
@@ -5,7 +5,7 @@ import {strictEqual, throws} from 'assert';
 describe('ObjectCsvStringifier', () => {
     const records = [
         {FIELD_A: 'VALUE_A1', FIELD_B: 'VALUE_B1'},
-        {FIELD_A: 'VALUE_A2', FIELD_B: 'VALUE_B2'}
+        {FIELD_A: 'VALUE_A2', FIELD_B: 'VALUE_B2', OTHERS: {FIELD_C: 'VALUE_C2'}}
     ];
 
     describe('When field delimiter is comma', generateTestCases());
@@ -69,6 +69,24 @@ describe('ObjectCsvStringifier', () => {
         });
     });
 
+    describe('When `keyDelimiter` is set', () => {
+        const stringifier = createObjectCsvStringifier({
+            header: [
+                {id: 'FIELD_A', title: 'TITLE_A'},
+                {id: 'OTHERS/FIELD_C', title: 'TITLE_C'}
+            ],
+            keyDelimiter: '/'
+        });
+
+        it('uses the title as is', () => {
+            strictEqual(stringifier.getHeaderString(), 'TITLE_A,TITLE_C\n');
+        });
+
+        it('picks up a value in nested objects', () => {
+            strictEqual(stringifier.stringifyRecords(records), 'VALUE_A1,\nVALUE_A2,VALUE_C2\n');
+        });
+    });
+
     function generateTestCases(fieldDelimiter?: string) {
         const delim = resolveDelimiterChar(fieldDelimiter);
         return () => {