Make sure short tests are actually passing

README.md

@@ -199,7 +199,9 @@ go test ./...
 
 - The `parallel` flag can be used to limit CPU usage, for running tests in the background (`-parallel=4`) - the default is `GOMAXPROCS`
 - The `p` flag can be used to limit the number of _packages_ tested concurrently, if they are interferring with one another (`-p=1`)
-- The `-short` flag skips tests which depend on the database, for quickly spot checking simpler tests in around one minute
+- The `-short` flag skips tests which depend on the database, for quickly spot checking simpler tests in around one minute.
+
+```bash
 
 #### Race Detector
 

core/chains/evm/config/config_test.go

@@ -378,6 +378,7 @@ func TestChainScopedConfig_HeadTracker(t *testing.T) {
 }
 
 func Test_chainScopedConfig_Validate(t *testing.T) {
+	testutils.SkipShort(t, "These tests check if the CL_DATABASE_URL env var has a specific format, which is not set in short mode.")
 	configWithChains := func(t *testing.T, id int64, chains ...*toml.Chain) config.AppConfig {
 		return configtest.NewGeneralConfig(t, func(c *chainlink.Config, s *chainlink.Secrets) {
 			chainID := ubig.NewI(id)