DEV: Move spec/components to spec/lib (#15987)

Lib specs were inexplicably split into two directories (`lib` and `components`)

This moves them all into `lib`.

spec/lib/highlight_js/highlight_js_spec.rb

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe HighlightJs do
+  it 'can list languages' do
+    expect(HighlightJs.languages).to include('thrift')
+  end
+
+  it 'can generate a packed bundle' do
+    bundle = HighlightJs.bundle(["thrift", "http"])
+    expect(bundle).to match(/thrift/)
+    expect(bundle).to match(/http/)
+    expect(bundle).not_to match(/applescript/)
+  end
+
+  it 'can get a version string' do
+    version1 = HighlightJs.version("http|cpp")
+    version2 = HighlightJs.version("rust|cpp|fake")
+
+    expect(version1).not_to eq(version2)
+  end
+end