MigrateNodeDeriverTest::testNoTranslations() does not install node module

Problem/Motivation

Was looking for how to write a test and I looked at D6NodeDeriverTest/D7NodeDeriverTest and noticed something odd.

Both contain 2 tests. They test if a node_translation migration is created with and without the content_translation and language modules installed. Seems simple enough. But there is an important difference. For d6, the node module is installed for both tests. For d7 the node module is only installed when content_translation and language are installed. This means that the test for ensuring that no node_translation migration are generated without content_translation and language isn't running the node deriver at all, thus the test isn't doing what it should. That test needs to install the node module.

Went back to the original issue #2669964: Migrate Drupal 7 core node translations to Drupal 8 and found that I did it. In #20, I said "I've pretty much copy/pasted the D6 node translation code to D7." And then got the test working without fully understanding what was going on.

The fix should be straight forward so I am marking as Novice.

Proposed resolution

Modify the d7 MigrateNodeDeriverTest::testNoTranslations() to install the node module.
Modify the assertion to use $this->assertArrayNotHasKey(). Something like this

$this->assertArrayHasNoKey('d7_node_translation:article', $migrations,
      "No node translation migrations without content_translation"");

Remaining tasks

Write a patch
Review it
Commit it

User interface changes

N/A

API changes

N/A

Data model changes

N/A