Rename spec file so it uses the source file path

spec/lib/tasks/db_spec.rb

@@ -0,0 +1,34 @@
+require "rails_helper"
+
+describe "rake db:load_sdg" do
+  before { Rake::Task["db:load_sdg"].reenable }
+
+  let :run_rake_task do
+    Rake.application.invoke_task("db:load_sdg")
+  end
+
+  it "populates empty databases and assigns targets correctly" do
+    SDG::Goal.destroy_all
+
+    run_rake_task
+
+    expect(SDG::Goal.count).to eq 17
+    expect(SDG::Target.count).to eq 169
+    expect(SDG::Target["17.1"].goal.code).to eq 17
+  end
+
+  it "does not create additional records on populated databases" do
+    expect(SDG::Goal.count).to eq 17
+    expect(SDG::Target.count).to eq 169
+
+    goal_id = SDG::Goal.last.id
+    target_id = SDG::Target.last.id
+
+    run_rake_task
+
+    expect(SDG::Goal.count).to eq 17
+    expect(SDG::Target.count).to eq 169
+    expect(SDG::Goal.last.id).to eq goal_id
+    expect(SDG::Target.last.id).to eq target_id
+  end
+end