From 75148fb5a59d4dd94a931fb5fcb774003aa1cfae Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=C3=ADdia=20Tarcza?=
 <100163235+diatrcz@users.noreply.github.com>
Date: Thu, 18 Dec 2025 10:57:30 +0100
Subject: [PATCH] fix(ibm-use-date-based-format): extend date-based-utils with
 exceptions
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Lídia Tarcza <100163235+diatrcz@users.noreply.github.com>
---
 .../ruleset/src/utils/date-based-utils.js     |  7 ++++-
 .../test/rules/use-date-based-format.test.js  | 28 +++++++++++++++++++
 2 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/packages/ruleset/src/utils/date-based-utils.js b/packages/ruleset/src/utils/date-based-utils.js
index 6d9409018..2d891bbb7 100644
--- a/packages/ruleset/src/utils/date-based-utils.js
+++ b/packages/ruleset/src/utils/date-based-utils.js
@@ -65,7 +65,12 @@ function isDateBasedName(name) {
     /.*timestamp.*/,
   ];
 
-  return dateBasedNamePatterns.some(regex => regex.test(name));
+  const exceptionNamePatterns = [/.*depends_on$/];
+
+  return (
+    dateBasedNamePatterns.some(regex => regex.test(name)) &&
+    !exceptionNamePatterns.some(regex => regex.test(name))
+  );
 }
 
 /**
diff --git a/packages/ruleset/test/rules/use-date-based-format.test.js b/packages/ruleset/test/rules/use-date-based-format.test.js
index f746c6ddc..86d9dda5e 100644
--- a/packages/ruleset/test/rules/use-date-based-format.test.js
+++ b/packages/ruleset/test/rules/use-date-based-format.test.js
@@ -284,6 +284,34 @@ describe(`Spectral rule: ${ruleId}`, () => {
       const results = await testRule(ruleId, rule, testDocument);
       expect(results).toHaveLength(0);
     });
+
+    it("depends_on doesn't yield error", async () => {
+      const testDocument = makeCopy(rootDocument);
+      testDocument.components.schemas.Movie.properties.metadata = {
+        oneOf: [
+          {
+            type: 'object',
+            properties: {
+              depends_on: {
+                maxLength: '25',
+                type: 'string',
+              },
+            },
+          },
+          {
+            type: 'object',
+            properties: {
+              irrelevant: {
+                type: 'boolean',
+              },
+            },
+          },
+        ],
+      };
+
+      const results = await testRule(ruleId, rule, testDocument);
+      expect(results).toHaveLength(0);
+    });
   });
 
   describe('Should yield errors', () => {