test: normalize localhost:<port> references

Author: G-Rath

__snapshots__/main_test.snap

@@ -60,39 +60,39 @@ You must provide at least one path to either a lockfile or a directory containin
 
 [TestRun_APIError/#00 - 1]
 Loaded the following OSV databases:
-  api#http://127.0.0.1:37453 (using batches of 1000)
+  api#http://<localhost>:<port> (using batches of 1000)
   RubyGems (%% vulnerabilities, including withdrawn - last updated %%)
 
 <tempdir>/Gemfile.lock: found 1 package
   Using config at <tempdir>/.osv-detector.yml (0 ignores)
-  Using db api#http://127.0.0.1:37453 (using batches of 1000)
+  Using db api#http://<localhost>:<port> (using batches of 1000)
   Using db RubyGems (%% vulnerabilities, including withdrawn - last updated %%)
 
   no known vulnerabilities found
 
 ---
 
 [TestRun_APIError/#00 - 2]
-  an api error occurred while trying to check the packages listed in <tempdir>/Gemfile.lock: api returned unexpected status (POST http://127.0.0.1:37453/querybatch 400)
+  an api error occurred while trying to check the packages listed in <tempdir>/Gemfile.lock: api returned unexpected status (POST http://<localhost>:<port>/querybatch 400)
 
 ---
 
 [TestRun_APIError/#01 - 1]
 Loaded the following OSV databases:
-  api#http://127.0.0.1:38803 (using batches of 1000)
+  api#http://<localhost>:<port> (using batches of 1000)
   RubyGems (%% vulnerabilities, including withdrawn - last updated %%)
 
 <tempdir>/Gemfile.lock: found 1 package
   Using config at <tempdir>/.osv-detector.yml (0 ignores)
-  Using db api#http://127.0.0.1:38803 (using batches of 1000)
+  Using db api#http://<localhost>:<port> (using batches of 1000)
   Using db RubyGems (%% vulnerabilities, including withdrawn - last updated %%)
 
   no known vulnerabilities found
 
 ---
 
 [TestRun_APIError/#01 - 2]
-  an api error occurred while trying to check the packages listed in <tempdir>/Gemfile.lock: api response could not be parsed as json (POST http://127.0.0.1:38803/querybatch): invalid character '<' looking for beginning of value
+  an api error occurred while trying to check the packages listed in <tempdir>/Gemfile.lock: api response could not be parsed as json (POST http://<localhost>:<port>/querybatch): invalid character '<' looking for beginning of value
 
 ---
 

main_normalize_test.go

@@ -89,6 +89,16 @@ func normalizeDatabaseStats(t *testing.T, str string) string {
 	return re.ReplaceAllString(str, "$1 (%% vulnerabilities, including withdrawn - last updated %%)")
 }
 
+// normalizeLocalhostPort attempts to replace references to 127.0.0.1:<port>
+// with a placeholder, to ensure tests pass when using httptest.Server
+func normalizeLocalhostPort(t *testing.T, str string) string {
+	t.Helper()
+
+	re := cachedregexp.MustCompile(`127\.0\.0\.1:\d+`)
+
+	return re.ReplaceAllString(str, "<localhost>:<port>")
+}
+
 // normalizeErrors attempts to replace error messages on alternative OSs with their
 // known linux equivalents, to ensure tests pass across different OSs
 func normalizeErrors(t *testing.T, str string) string {
@@ -110,6 +120,7 @@ func normalizeSnapshot(t *testing.T, str string) string {
 		normalizeTempDirectory,
 		normalizeUserCacheDirectory,
 		normalizeDatabaseStats,
+		normalizeLocalhostPort,
 		normalizeErrors,
 	} {
 		str = normalizer(t, str)