Add tests

Author: idan

tests/csv-test.ts

@@ -33,4 +33,27 @@ Deno.test("writes a csv file", async () => {
     const csv = await readCSV(csvWritePath)
 
     assertArrayIncludes(csv, [{ age: "70", name: "Rick" }]);
+})
+Deno.test("appends to a csv file", async () => {
+    const data = [
+        { 
+            age: 70,
+            name: 'Rick'
+        },
+        {
+            age: 14,
+            name: 'Smith'
+        }
+    ]
+    await writeCSV(csvWritePath, data)
+    const data2 = [
+        {
+            age: 42,
+            name: 'Jodi'
+        }
+    ]
+    await writeCSV(csvWritePath, data2, { append: true })
+    const csv = await readCSV(csvWritePath)
+    assertArrayIncludes(csv, [{ age: "70", name: "Rick" }])
+    assertArrayIncludes(csv, [{ age: "42", name: "Jodi" }])
 })

tests/txt-test.ts

@@ -17,4 +17,15 @@ Deno.test("writes a txt file", async () => {
     const txt = await readTXT(jsonWritePath)
 
     assertStringIncludes(txt, content);
+})
+
+Deno.test("appends to a txt file", async () => {
+    const content = 'Write to a file'
+    const content2 = 'Append to a file'
+    await writeTXT(jsonWritePath, content)
+    await writeTXT(jsonWritePath, content2, { append: true })
+    const txt = await readTXT(jsonWritePath)
+
+    assertStringIncludes(txt, content);
+    assertStringIncludes(txt, content2);
 })