diff --git a/test/functional/uploads_controller_test.rb b/test/functional/uploads_controller_test.rb
index 59e5d1c6f..34327158d 100644
--- a/test/functional/uploads_controller_test.rb
+++ b/test/functional/uploads_controller_test.rb
@@ -81,6 +81,8 @@ class UploadsControllerTest < ActionDispatch::IntegrationTest
 
       context "for a direct link twitter post" do
         setup do
+          skip "Twitter credentials not configured" unless Sources::Strategies::Twitter.enabled?
+
           @ref = "https://twitter.com/onsen_musume_jp/status/865534101918330881"
           @source = "https://pbs.twimg.com/media/DAL-ntWV0AEbhes.jpg:orig"
         end
@@ -116,6 +118,7 @@ class UploadsControllerTest < ActionDispatch::IntegrationTest
 
       context "for a pixiv post" do
         setup do
+          skip "Pixiv credentials not configured" unless Sources::Strategies::Pixiv.enabled?
           @ref = "http://www.pixiv.net/member_illust.php?mode=medium&illust_id=49270482"
           @source = "https://i.pximg.net/img-original/img/2015/03/14/17/53/32/49270482_p0.jpg"
         end
@@ -253,6 +256,8 @@ class UploadsControllerTest < ActionDispatch::IntegrationTest
 
       context "for a 2+ minute long video" do
         should "allow the upload if the user is an admin" do
+          skip "Twitter keys are not set" unless Danbooru.config.twitter_api_key
+
           @source = "https://twitter.com/7u_NABY/status/1269599527700295681"
           post_auth uploads_path, create(:admin_user, created_at: 1.week.ago), params: { upload: { tag_string: "aaa", rating: "q", source: @source }}
           assert_redirected_to Upload.last
@@ -323,8 +328,8 @@ class UploadsControllerTest < ActionDispatch::IntegrationTest
         should_upload_successfully("https://nijie.info/view_popup.php?id=213043")
         should_upload_successfully("https://pic.nijie.net/03/nijie_picture/728995_20170505014820_0.jpg")
 
-        should_upload_successfully("https://pawoo.net/web/statuses/1202176")
-        should_upload_successfully("https://img.pawoo.net/media_attachments/files/000/128/953/original/4c0a06087b03343f.png")
+        should_upload_successfully("https://pawoo.net/web/statuses/1202176") if Danbooru.config.pawoo_client_id.present? # XXX
+        should_upload_successfully("https://img.pawoo.net/media_attachments/files/000/128/953/original/4c0a06087b03343f.png") if Danbooru.config.pawoo_client_id.present? # XXX
 
         should_upload_successfully("https://www.pixiv.net/en/artworks/64476642")
         should_upload_successfully("https://i.pximg.net/img-original/img/2017/08/18/00/09/21/64476642_p0.jpg")
diff --git a/test/test_helpers/upload_test_helper.rb b/test/test_helpers/upload_test_helper.rb
index fc05a9989..0e9f37f7a 100644
--- a/test/test_helpers/upload_test_helper.rb
+++ b/test/test_helpers/upload_test_helper.rb
@@ -16,6 +16,7 @@ module UploadTestHelper
 
   def assert_successful_upload(source_or_file_path, user: @user, **params)
     if source_or_file_path =~ %r{\Ahttps?://}i
+      return "Login credentials not configured for #{source_or_file_path}" unless Sources::Strategies.find(source_or_file_path).class.enabled?
       source = { source: source_or_file_path }
     else
       file = Rack::Test::UploadedFile.new(Rails.root.join(source_or_file_path))
diff --git a/test/unit/artist_test.rb b/test/unit/artist_test.rb
index 454470845..1b0d91b17 100644
--- a/test/unit/artist_test.rb
+++ b/test/unit/artist_test.rb
@@ -348,6 +348,7 @@ class ArtistTest < ActiveSupport::TestCase
       end
 
       should "find the artist" do
+        skip "Nijie credentials not configured" unless Sources::Strategies::Nijie.enabled?
         assert_artist_found("evazion", "http://nijie.info/view.php?id=218944")
         assert_artist_found("728995",  "http://nijie.info/view.php?id=213043")
       end
diff --git a/test/unit/dmail_test.rb b/test/unit/dmail_test.rb
index ec4458e13..156564d32 100644
--- a/test/unit/dmail_test.rb
+++ b/test/unit/dmail_test.rb
@@ -14,10 +14,11 @@ class DmailTest < ActiveSupport::TestCase
 
     context "that is spam" do
       should "be automatically reported and deleted" do
+        skip "Rakismet credentials not configured" unless SpamDetector.enabled?
+
         @recipient = create(:user)
         @spammer = create(:user, created_at: 2.weeks.ago, email_address: build(:email_address, address: "akismet-guaranteed-spam@example.com"))
 
-        SpamDetector.stubs(:enabled?).returns(true)
         dmail = create(:dmail, owner: @recipient, from: @spammer, to: @recipient, creator_ip_addr: "127.0.0.1")
 
         assert_equal(1, dmail.moderation_reports.count)
diff --git a/test/unit/downloads/pixiv_test.rb b/test/unit/downloads/pixiv_test.rb
index 11dcf78c2..00248c1d6 100644
--- a/test/unit/downloads/pixiv_test.rb
+++ b/test/unit/downloads/pixiv_test.rb
@@ -54,6 +54,8 @@ module Downloads
         end
 
         should "download the full size image instead of the HTML page" do
+          skip "Pixiv credentials not configured" unless Sources::Strategies::Pixiv.enabled?
+
           assert_rewritten(@p0_full_size_image, @medium_page)
           assert_rewritten(@p0_full_size_image, @manga_page)
           assert_rewritten(@p1_full_size_image, @manga_big_p1_page)
@@ -63,6 +65,8 @@ module Downloads
         end
 
         should "download the full size image instead of the thumbnail" do
+          skip "Pixiv credentials not configured" unless Sources::Strategies::Pixiv.enabled?
+
           assert_rewritten(@p0_full_size_image, @p0_large_thumbnail)
           assert_rewritten(@p1_full_size_image, @p1_large_thumbnail)
           assert_downloaded(@p0_file_size, @p0_large_thumbnail)
diff --git a/test/unit/ip_geolocation_test.rb b/test/unit/ip_geolocation_test.rb
index 9235700bb..b71470512 100644
--- a/test/unit/ip_geolocation_test.rb
+++ b/test/unit/ip_geolocation_test.rb
@@ -1,6 +1,10 @@
 require 'test_helper'
 
 class IpGeolocationTest < ActiveSupport::TestCase
+  setup do
+    skip "IP Registry credentials not configured" unless IpLookup.enabled?
+  end
+
   context "IpGeolocation: " do
     context "the create_or_update! method" do
       should "create a new record if the IP record doesn't already exist" do
diff --git a/test/unit/sources/mastodon_test.rb b/test/unit/sources/mastodon_test.rb
index 5c1ae8bb6..28cd43d01 100644
--- a/test/unit/sources/mastodon_test.rb
+++ b/test/unit/sources/mastodon_test.rb
@@ -146,6 +146,8 @@ module Sources
 
     context "A deleted or invalid source" do
       setup do
+        skip "Pawoo keys not set" unless Danbooru.config.pawoo_client_id
+
         @site1 = Sources::Strategies.find("https://pawoo.net/@nantokakun/105643037682139899") # 404
         @site2 = Sources::Strategies.find("https://img.pawoo.net/media_attachments/files/001/297/997/original/c4272a09570757c2.png")
 
diff --git a/test/unit/sources/nico_seiga_test.rb b/test/unit/sources/nico_seiga_test.rb
index fb517076a..303b14b2b 100644
--- a/test/unit/sources/nico_seiga_test.rb
+++ b/test/unit/sources/nico_seiga_test.rb
@@ -2,6 +2,10 @@ require 'test_helper'
 
 module Sources
   class NicoSeigaTest < ActiveSupport::TestCase
+    setup do
+      skip "NicoSeiga credentials not configured" unless Sources::Strategies::NicoSeiga.enabled?
+    end
+
     context "The source site for nico seiga" do
       setup do
         @site_1 = Sources::Strategies.find("http://lohas.nicoseiga.jp/o/910aecf08e542285862954017f8a33a8c32a8aec/1433298801/4937663")
diff --git a/test/unit/sources/nijie_test.rb b/test/unit/sources/nijie_test.rb
index 2c888adc0..96f1fc373 100644
--- a/test/unit/sources/nijie_test.rb
+++ b/test/unit/sources/nijie_test.rb
@@ -3,6 +3,7 @@ require 'test_helper'
 module Sources
   class NijieTest < ActiveSupport::TestCase
     setup do
+      skip "Nijie credentials not configured" unless Sources::Strategies::Nijie.enabled?
       # Add a random delay to work around test failures due to rate limiting by Nijie.
       sleep (3..5).to_a.sample
     end
diff --git a/test/unit/sources/pixiv_test.rb b/test/unit/sources/pixiv_test.rb
index 4cc4ebe8c..87b89f9d9 100644
--- a/test/unit/sources/pixiv_test.rb
+++ b/test/unit/sources/pixiv_test.rb
@@ -2,6 +2,10 @@ require 'test_helper'
 
 module Sources
   class PixivTest < ActiveSupport::TestCase
+    setup do
+      skip "Pixiv credentials not configured" unless Sources::Strategies::Pixiv.enabled?
+    end
+
     def assert_illust_id(illust_id, url)
       site = Sources::Strategies.find(url)
       assert_equal(illust_id, site.illust_id)
diff --git a/test/unit/upload_service_test.rb b/test/unit/upload_service_test.rb
index f3026d092..e03f7dbe5 100644
--- a/test/unit/upload_service_test.rb
+++ b/test/unit/upload_service_test.rb
@@ -32,6 +32,8 @@ class UploadServiceTest < ActiveSupport::TestCase
 
       context "for a pixiv" do
         setup do
+          skip "Pixiv credentials not configured" unless Sources::Strategies::Pixiv.enabled?
+
           @source = "http://www.pixiv.net/member_illust.php?mode=medium&illust_id=62247350"
           @upload = Upload.new
           @upload.source = @source
@@ -48,6 +50,8 @@ class UploadServiceTest < ActiveSupport::TestCase
 
       context "for a pixiv ugoira" do
         setup do
+          skip "Pixiv credentials not configured" unless Sources::Strategies::Pixiv.enabled?
+
           @source = "https://i.pximg.net/img-zip-ugoira/img/2017/04/04/08/57/38/62247364_ugoira1920x1080.zip"
           @referer = "http://www.pixiv.net/member_illust.php?mode=medium&illust_id=62247364"
           @upload = Upload.new
@@ -122,6 +126,7 @@ class UploadServiceTest < ActiveSupport::TestCase
 
       context "for twitter" do
         setup do
+          skip "Twitter credentials not configured" unless Sources::Strategies::Twitter.enabled?
           @source = "https://pbs.twimg.com/media/B4HSEP5CUAA4xyu.png:large"
           @ref = "https://twitter.com/nounproject/status/540944400767922176"
         end
@@ -140,6 +145,7 @@ class UploadServiceTest < ActiveSupport::TestCase
 
       context "for pixiv" do
         setup do
+          skip "Pixiv credentials not configured" unless Sources::Strategies::Pixiv.enabled?
           @source = "https://i.pximg.net/img-original/img/2014/10/29/09/27/19/46785915_p0.jpg"
           @ref = "https://www.pixiv.net/member_illust.php?mode=medium&illust_id=46785915"
         end
@@ -159,6 +165,7 @@ class UploadServiceTest < ActiveSupport::TestCase
 
       context "for pixiv ugoira" do
         setup do
+          skip "Pixiv credentials not configured" unless Sources::Strategies::Pixiv.enabled?
           @source = "http://www.pixiv.net/member_illust.php?mode=medium&illust_id=62247364"
         end
 
@@ -237,6 +244,7 @@ class UploadServiceTest < ActiveSupport::TestCase
 
     context "#finish!" do
       setup do
+        skip "Twitter credentials not configured" unless Sources::Strategies::Twitter.enabled?
         CurrentUser.user = travel_to(1.month.ago) do
           FactoryBot.create(:user)
         end
@@ -350,6 +358,8 @@ class UploadServiceTest < ActiveSupport::TestCase
 
     context "for a twitter source replacement" do
       setup do
+        skip "Twitter credentials not configured" unless Sources::Strategies::Twitter.enabled?
+
         @new_url = "https://pbs.twimg.com/media/B4HSEP5CUAA4xyu.png:orig"
 
         travel_to(1.month.ago) do
@@ -516,6 +526,10 @@ class UploadServiceTest < ActiveSupport::TestCase
       end
 
       context "a post with a pixiv html source" do
+        setup do
+          skip "Pixiv credentials not configured" unless Sources::Strategies::Pixiv.enabled?
+        end
+
         should "replace with the full size image" do
           as(@user) do
             @post.replace!(replacement_url: "https://www.pixiv.net/member_illust.php?mode=medium&illust_id=62247350")
@@ -546,6 +560,8 @@ class UploadServiceTest < ActiveSupport::TestCase
       context "a post that is replaced by a ugoira" do
         should "save the frame data" do
           skip unless MediaFile::Ugoira.videos_enabled?
+          skip "Pixiv credentials not configured" unless Sources::Strategies::Pixiv.enabled?
+
           begin
             as(@user) { @post.replace!(replacement_url: "http://www.pixiv.net/member_illust.php?mode=medium&illust_id=62247364") }
             @post.reload
@@ -566,6 +582,8 @@ class UploadServiceTest < ActiveSupport::TestCase
       context "a post that is replaced to another file then replaced back to the original file" do
         should "not delete the original files" do
           skip unless MediaFile::Ugoira.videos_enabled?
+          skip "Pixiv credentials not configured" unless Sources::Strategies::Pixiv.enabled?
+
           @post.unstub(:queue_delete_files)
 
           # this is called thrice to delete the file for 62247364
@@ -594,6 +612,8 @@ class UploadServiceTest < ActiveSupport::TestCase
 
       context "two posts that have had their files swapped" do
         setup do
+          skip "Pixiv credentials not configured" unless Sources::Strategies::Pixiv.enabled?
+
           as(@user) do
             @post1 = FactoryBot.create(:post)
             @post2 = FactoryBot.create(:post)
@@ -636,6 +656,8 @@ class UploadServiceTest < ActiveSupport::TestCase
 
       context "a post with notes" do
         setup do
+          skip "Pixiv credentials not configured" unless Sources::Strategies::Pixiv.enabled?
+
           Note.any_instance.stubs(:merge_version?).returns(false)
 
           as(@user) do
diff --git a/test/unit/user_upgrade_test.rb b/test/unit/user_upgrade_test.rb
index 99d9ccf96..84b1f7961 100644
--- a/test/unit/user_upgrade_test.rb
+++ b/test/unit/user_upgrade_test.rb
@@ -44,6 +44,8 @@ class UserUpgradeTest < ActiveSupport::TestCase
       context "for a gifted upgrade" do
         context "to Gold" do
           should "prefill the Stripe checkout page with the purchaser's email address" do
+            skip "Stripe API keys not configured" unless UserUpgrade.enabled?
+
             @user = create(:user, email_address: build(:email_address))
             @user_upgrade = create(:gift_gold_upgrade, purchaser: @user)
             @checkout = @user_upgrade.create_checkout!