Added support for parsing JSON with number type values. Added support for non-array JSON objects. Added extra tests for JSON to CSV operation.

src/core/operations/JSONToCSV.mjs

@@ -51,6 +51,10 @@ class JSONToCSV extends Operation {
         this.rowDelim = rowDelim;
         const self = this;
 
+        if (!(input instanceof Array)) {
+            input = [input];
+        }
+
         try {
             // If the JSON is an array of arrays, this is easy
             if (input[0] instanceof Array) {
@@ -89,6 +93,8 @@ class JSONToCSV extends Operation {
      * @returns {string}
      */
     escapeCellContents(data) {
+        if (typeof data === "number") data = data.toString();
+
         // Double quotes should be doubled up
         data = data.replace(/"/g, '""');
 

tests/operations/index.mjs

@@ -52,6 +52,7 @@ import "./tests/Image";
 import "./tests/Jump";
 import "./tests/JSONBeautify";
 import "./tests/JSONMinify";
+import "./tests/JSONtoCSV";
 import "./tests/JWTDecode";
 import "./tests/JWTSign";
 import "./tests/JWTVerify";

tests/operations/tests/JSONtoCSV.mjs

@@ -0,0 +1,93 @@
+/**
+ * JSON to CSV tests.
+ *
+ * @author mshwed [m@ttshwed.com]
+ *
+ * @copyright Crown Copyright 2019
+ * @license Apache-2.0
+ */
+import TestRegister from "../TestRegister";
+
+const EXPECTED_CSV_SINGLE = "a,b,c\r\n1,2,3\r\n";
+const EXPECTED_CSV_MULTIPLE = "a,b,c\r\n1,2,3\r\n1,2,3\r\n";
+const EXPECTED_CSV_EMPTY = "\r\n\r\n";
+
+TestRegister.addTests([
+    {
+        name: "JSON to CSV: strings as values",
+        input: JSON.stringify({a: "1", b: "2", c: "3"}),
+        expectedOutput: EXPECTED_CSV_SINGLE,
+        recipeConfig: [
+            {
+                op: "JSON to CSV",
+                args: [",", "\\r\\n"]
+            },
+        ],
+    },
+    {
+        name: "JSON to CSV: numbers as values",
+        input: JSON.stringify({a: 1, b: 2, c: 3}),
+        expectedOutput: EXPECTED_CSV_SINGLE,
+        recipeConfig: [
+            {
+                op: "JSON to CSV",
+                args: [",", "\\r\\n"]
+            },
+        ],
+    },
+    {
+        name: "JSON to CSV: numbers and strings as values",
+        input: JSON.stringify({a: 1, b: "2", c: 3}),
+        expectedOutput: EXPECTED_CSV_SINGLE,
+        recipeConfig: [
+            {
+                op: "JSON to CSV",
+                args: [",", "\\r\\n"]
+            },
+        ],
+    },
+    {
+        name: "JSON to CSV: JSON as an array",
+        input: JSON.stringify([{a: 1, b: "2", c: 3}]),
+        expectedOutput: EXPECTED_CSV_SINGLE,
+        recipeConfig: [
+            {
+                op: "JSON to CSV",
+                args: [",", "\\r\\n"]
+            },
+        ],
+    },
+    {
+        name: "JSON to CSV: multiple JSON values in an array",
+        input: JSON.stringify([{a: 1, b: "2", c: 3}, {a: 1, b: "2", c: 3}]),
+        expectedOutput: EXPECTED_CSV_MULTIPLE,
+        recipeConfig: [
+            {
+                op: "JSON to CSV",
+                args: [",", "\\r\\n"]
+            },
+        ],
+    },
+    {
+        name: "JSON to CSV: empty JSON",
+        input: JSON.stringify({}),
+        expectedOutput: EXPECTED_CSV_EMPTY,
+        recipeConfig: [
+            {
+                op: "JSON to CSV",
+                args: [",", "\\r\\n"]
+            },
+        ],
+    },
+    {
+        name: "JSON to CSV: empty JSON in array",
+        input: JSON.stringify([{}]),
+        expectedOutput: EXPECTED_CSV_EMPTY,
+        recipeConfig: [
+            {
+                op: "JSON to CSV",
+                args: [",", "\\r\\n"]
+            },
+        ],
+    }
+]);