support/testing/tests: add NodeJS tests

This commit adds two new test cases:

 - TestNodeJSBasic which builds a target configuration with just
   NodeJS enabled, and which runs a very simple NodeJS script on the
   target.

 - TestNodeJSModule, which builds a target configuration with NodeJS
   enabled + the installation of one extra module, which means npm on
   the host (from host-nodejs) is used, and which runs a very simple
   NodeJS script on the target that uses this extra module.

Having both tests separately allows to validate that both nodejs-only
and nodejs+host-nodejs configurations behave correctly, at least in
minimal scenarios.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Tested-by: Romain Naour <romain.naour@smile.fr>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

DEVELOPERS

@@ -2944,11 +2944,14 @@ F:	package/weston/
 F:	support/testing/tests/boot/test_grub.py
 F:	support/testing/tests/boot/test_grub/
 F:	support/testing/tests/boot/test_syslinux.py
+F:	support/testing/tests/package/sample_nodejs_basic.js
+F:	support/testing/tests/package/sample_nodejs_module.js
 F:	support/testing/tests/package/sample_python_augeas.py
 F:	support/testing/tests/package/sample_python_flask.py
 F:	support/testing/tests/package/sample_python_flask_expects_json.py
 F:	support/testing/tests/package/sample_python_git.py
 F:	support/testing/tests/package/sample_python_unittest_xml_reporting.py
+F:	support/testing/tests/package/test_nodejs.py
 F:	support/testing/tests/package/test_python_augeas.py
 F:	support/testing/tests/package/test_python_flask.py
 F:	support/testing/tests/package/test_python_flask_expects_json.py

support/testing/tests/package/sample_nodejs_basic.js

@@ -0,0 +1,3 @@
+var assert = require('assert');
+assert.strictEqual(1, 1);
+console.log("Hello World");

support/testing/tests/package/sample_nodejs_module.js

@@ -0,0 +1,7 @@
+var assert = require('assert');
+var lodash = require('lodash');
+result = lodash.chunk(['a', 'b', 'c', 'd'], 2);
+expected = [ [ 'a', 'b' ], [ 'c', 'd' ] ];
+assert.deepStrictEqual(result, expected)
+
+

support/testing/tests/package/test_nodejs.py

@@ -0,0 +1,52 @@
+import os
+
+import infra.basetest
+
+
+class TestNodeJSBasic(infra.basetest.BRTest):
+    config = \
+        """
+        BR2_arm=y
+        BR2_cortex_a9=y
+        BR2_ARM_ENABLE_VFP=y
+        BR2_TOOLCHAIN_EXTERNAL=y
+        BR2_PACKAGE_NODEJS=y
+        BR2_TARGET_ROOTFS_CPIO=y
+        # BR2_TARGET_ROOTFS_TAR is not set
+        BR2_ROOTFS_POST_BUILD_SCRIPT="{}"
+        BR2_ROOTFS_POST_SCRIPT_ARGS="{}"
+        """.format(infra.filepath("tests/package/copy-sample-script-to-target.sh"),
+                   infra.filepath("tests/package/sample_nodejs_basic.js"))
+
+    def test_run(self):
+        cpio_file = os.path.join(self.builddir, "images", "rootfs.cpio")
+        self.emulator.boot(arch="armv7",
+                           kernel="builtin",
+                           options=["-initrd", cpio_file])
+        self.emulator.login()
+        self.assertRunOk("node sample_nodejs_basic.js")
+
+
+class TestNodeJSModule(infra.basetest.BRTest):
+    config = \
+        """
+        BR2_arm=y
+        BR2_cortex_a9=y
+        BR2_ARM_ENABLE_VFP=y
+        BR2_TOOLCHAIN_EXTERNAL=y
+        BR2_PACKAGE_NODEJS=y
+        BR2_PACKAGE_NODEJS_MODULES_ADDITIONAL="lodash"
+        BR2_TARGET_ROOTFS_CPIO=y
+        # BR2_TARGET_ROOTFS_TAR is not set
+        BR2_ROOTFS_POST_BUILD_SCRIPT="{}"
+        BR2_ROOTFS_POST_SCRIPT_ARGS="{}"
+        """.format(infra.filepath("tests/package/copy-sample-script-to-target.sh"),
+                   infra.filepath("tests/package/sample_nodejs_module.js"))
+
+    def test_run(self):
+        cpio_file = os.path.join(self.builddir, "images", "rootfs.cpio")
+        self.emulator.boot(arch="armv7",
+                           kernel="builtin",
+                           options=["-initrd", cpio_file])
+        self.emulator.login()
+        self.assertRunOk("node sample_nodejs_module.js")