diff --git a/test/integration/test-runner.js b/test/integration/test-runner.js
index 77be7a9b3..7dbd7c158 100644
--- a/test/integration/test-runner.js
+++ b/test/integration/test-runner.js
@@ -25,6 +25,8 @@ const assert = require('assert')
 const semver = require('semver')
 const helper = require('./helper')
 const deepEqual = require('fast-deep-equal')
+const { join } = require('path')
+const { locations } = require('../../scripts/download-artifacts')
 const { ConfigurationError } = require('../../lib/errors')
 
 const { delve, to, isXPackTemplate, sleep } = helper
@@ -362,6 +364,11 @@ function build (opts = {}) {
     if (!Array.isArray(options.ignore)) options.ignore = [options.ignore]
     if (cmd.params.ignore) delete cmd.params.ignore
 
+    // ndjson apis should always send the body as an array
+    if (isNDJson(cmd.api) && !Array.isArray(cmd.params.body)) {
+      cmd.params.body = [cmd.params.body]
+    }
+
     const [err, result] = await to(api(cmd.params, options))
     let warnings = result ? result.warnings : null
     const body = result ? result.body : null
@@ -696,6 +703,7 @@ function parseDo (action) {
         // converts underscore to camelCase
         // eg: put_mapping => putMapping
         acc.method = val.replace(/_([a-z])/g, g => g[1].toUpperCase())
+        acc.api = val
         acc.params = camelify(action[val])
     }
     return acc
@@ -848,6 +856,12 @@ function shouldSkip (esVersion, action) {
   return false
 }
 
+function isNDJson (api) {
+  const spec = require(join(locations.specFolder, `${api}.json`))
+  const { content_type } = spec[Object.keys(spec)[0]].headers
+  return Boolean(content_type && content_type.includes('application/x-ndjson'))
+}
+
 /**
  * Updates the array syntax of keys and values
  * eg: 'hits.hits.1.stuff' to 'hits.hits[1].stuff'