diff --git a/packages/sanity/src/structure/comments/src/__tests__/weakenReferencesInContentSnapshot.test.ts b/packages/sanity/src/structure/comments/src/__tests__/weakenReferencesInContentSnapshot.test.ts
new file mode 100644
index 000000000000..af78c985c0ba
--- /dev/null
+++ b/packages/sanity/src/structure/comments/src/__tests__/weakenReferencesInContentSnapshot.test.ts
@@ -0,0 +1,213 @@
+import {describe, expect, test} from '@jest/globals'
+
+import {type CommentDocument} from '../types'
+import {weakenReferencesInContentSnapshot} from '../utils'
+
+interface BeforeAndAfter {
+  before: CommentDocument['contentSnapshot']
+  after: CommentDocument['contentSnapshot']
+}
+
+const WITH_REFERENCE: BeforeAndAfter = {
+  before: [
+    {
+      _key: '45c3d74f7d00',
+      _type: 'block',
+      children: [
+        {_key: '2ae5bdb4297f', _type: 'span', marks: [], text: 'ld '},
+        {
+          _key: 'ce4354994669',
+          _ref: '0c9d9135-0d20-44a1-9ec1-54ea41ce84d1',
+          _type: 'strongAuthorRef',
+        },
+        {_key: 'b2b48e531409', _type: 'span', marks: [], text: ' lor'},
+      ],
+      markDefs: [],
+      style: 'normal',
+    },
+  ],
+  after: [
+    {
+      _key: '45c3d74f7d00',
+      _type: 'block',
+      children: [
+        {_key: '2ae5bdb4297f', _type: 'span', marks: [], text: 'ld '},
+        {
+          _key: 'ce4354994669',
+          _ref: '0c9d9135-0d20-44a1-9ec1-54ea41ce84d1',
+          _type: 'strongAuthorRef',
+          _weak: true,
+        },
+        {_key: 'b2b48e531409', _type: 'span', marks: [], text: ' lor'},
+      ],
+      markDefs: [],
+      style: 'normal',
+    },
+  ],
+}
+
+const WITH_REFERENCE_IN_OBJECT: BeforeAndAfter = {
+  before: [
+    {
+      _key: '45c3d74f7d00',
+      _type: 'block',
+      children: [
+        {_key: '2ae5bdb4297f', _type: 'span', marks: [], text: 'ld '},
+        {
+          _key: 'ce4354994669',
+          _type: 'objectWithReference',
+          strongAuthorRef: {
+            _ref: '0c9d9135-0d20-44a1-9ec1-54ea41ce84d1',
+            _type: 'reference',
+          },
+        },
+        {_key: 'b2b48e531409', _type: 'span', marks: [], text: ' lor'},
+      ],
+      markDefs: [],
+      style: 'normal',
+    },
+  ],
+
+  after: [
+    {
+      _key: '45c3d74f7d00',
+      _type: 'block',
+      children: [
+        {_key: '2ae5bdb4297f', _type: 'span', marks: [], text: 'ld '},
+        {
+          _key: 'ce4354994669',
+          _type: 'objectWithReference',
+          strongAuthorRef: {
+            _ref: '0c9d9135-0d20-44a1-9ec1-54ea41ce84d1',
+            _type: 'reference',
+            _weak: true,
+          },
+        },
+        {_key: 'b2b48e531409', _type: 'span', marks: [], text: ' lor'},
+      ],
+      markDefs: [],
+      style: 'normal',
+    },
+  ],
+}
+
+const WITHOUT_REFERENCES: BeforeAndAfter = {
+  before: [
+    {
+      _key: '45c3d74f7d00',
+      _type: 'block',
+      children: [
+        {_key: '2ae5bdb4297f', _type: 'span', marks: [], text: 'ld '},
+        {_key: 'b2b48e531409', _type: 'span', marks: [], text: ' lor'},
+        {
+          _key: 'b2b48e531409',
+          _type: 'object',
+          someValue: 'someValue',
+        },
+      ],
+      markDefs: [],
+      style: 'normal',
+    },
+  ],
+  after: [
+    {
+      _key: '45c3d74f7d00',
+      _type: 'block',
+      children: [
+        {_key: '2ae5bdb4297f', _type: 'span', marks: [], text: 'ld '},
+        {_key: 'b2b48e531409', _type: 'span', marks: [], text: ' lor'},
+        {
+          _key: 'b2b48e531409',
+          _type: 'object',
+          someValue: 'someValue',
+        },
+      ],
+      markDefs: [],
+      style: 'normal',
+    },
+  ],
+}
+
+const SIMPLE_REFERENCE: BeforeAndAfter = {
+  before: {
+    _ref: '0c9d9135-0d20-44a1-9ec1-54ea41ce84d1',
+    _type: 'reference',
+  },
+  after: {
+    _ref: '0c9d9135-0d20-44a1-9ec1-54ea41ce84d1',
+    _type: 'reference',
+    _weak: true,
+  },
+}
+
+const ARRAY_OF_REFERENCES: BeforeAndAfter = {
+  before: [
+    {
+      _ref: '0c9d9135-0d20-44a1-9ec1-54ea41ce84d1',
+      _type: 'reference',
+    },
+    {
+      _ref: '0c9d9135-0d20-44a1-9ec1-54ea41ce84d1',
+      _type: 'reference',
+    },
+    {
+      _type: 'objectWithReference',
+      strongAuthorRef: {
+        _ref: '0c9d9135-0d20-44a1-9ec1-54ea41ce84d1',
+        _type: 'reference',
+      },
+    },
+  ],
+  after: [
+    {
+      _ref: '0c9d9135-0d20-44a1-9ec1-54ea41ce84d1',
+      _type: 'reference',
+      _weak: true,
+    },
+    {
+      _ref: '0c9d9135-0d20-44a1-9ec1-54ea41ce84d1',
+      _type: 'reference',
+      _weak: true,
+    },
+    {
+      _type: 'objectWithReference',
+      strongAuthorRef: {
+        _ref: '0c9d9135-0d20-44a1-9ec1-54ea41ce84d1',
+        _type: 'reference',
+        _weak: true,
+      },
+    },
+  ],
+}
+
+describe('comments: weakenReferencesInContentSnapshot', () => {
+  test('should add a _weak property to reference in block', () => {
+    const result = weakenReferencesInContentSnapshot(WITH_REFERENCE.before)
+
+    expect(result).toEqual(WITH_REFERENCE.after)
+  })
+
+  test('should add a _weak property to reference in object', () => {
+    const result = weakenReferencesInContentSnapshot(WITH_REFERENCE_IN_OBJECT.before)
+
+    expect(result).toEqual(WITH_REFERENCE_IN_OBJECT.after)
+  })
+
+  test('should return original content snapshot if no reference is found', () => {
+    const result = weakenReferencesInContentSnapshot(WITHOUT_REFERENCES.before)
+
+    expect(result).toEqual(WITHOUT_REFERENCES.after)
+  })
+
+  test('should add a _weak property to a simple reference', () => {
+    const result = weakenReferencesInContentSnapshot(SIMPLE_REFERENCE.before)
+
+    expect(result).toEqual(SIMPLE_REFERENCE.after)
+  })
+
+  test('should add a _weak property to an array of references', () => {
+    const result = weakenReferencesInContentSnapshot(ARRAY_OF_REFERENCES.before)
+
+    expect(result).toEqual(ARRAY_OF_REFERENCES.after)
+  })
+})