diff --git a/tests/unit/package_managers/yarn/test_project.py b/tests/unit/package_managers/yarn/test_project.py
index b652f7c15..9e3a1ea7b 100644
--- a/tests/unit/package_managers/yarn/test_project.py
+++ b/tests/unit/package_managers/yarn/test_project.py
@@ -16,10 +16,7 @@
 )
 from cachi2.core.rooted_path import PathOutsideRoot, RootedPath
 
-# the supportedArchitectures property is not currently mapped in the YarnRc class, but is kept
-# here because it's one of the default properties generated by "yarn init -2"
-VALID_YARNRC_FILE = """
-cacheFolder: ./.custom/cache
+VALID_YARNRC_FILE = """cacheFolder: ./.custom/cache
 checksumBehavior: ignore
 enableGlobalCache: true
 enableImmutableCache: true
@@ -32,28 +29,29 @@
 globalFolder: /a/global/folder
 ignorePath: true
 installStatePath: /custom/install-state.gz
+lockfileFilename: custom.lock
 nodeLinker: pnp
 npmRegistryServer: https://registry.alternative.com
 npmScopes:
-    foobar:
-        npmRegistryServer: https://registry.foobar.com
+  foobar:
+    npmRegistryServer: https://registry.foobar.com
 patchFolder: /custom/patches
+plugins:
+- path: .yarn/plugins/@yarnpkg/plugin-typescript.cjs
+  spec: '@yarnpkg/plugin-typescript'
+- path: .yarn/plugins/@yarnpkg/plugin-exec.cjs
+  spec: '@yarnpkg/plugin-exec'
 pnpDataPath: /custom/.pnp.data.json
 pnpMode: loose
 pnpUnpluggedFolder: /some/unplugged/folder
-plugins:
-  - path: .yarn/plugins/@yarnpkg/plugin-typescript.cjs
-    spec: "@yarnpkg/plugin-typescript"
-  - path: .yarn/plugins/@yarnpkg/plugin-exec.cjs
-    spec: "@yarnpkg/plugin-exec"
 supportedArchitectures:
   os:
-    - "linux"
+  - linux
 unsafeHttpWhitelist:
-  - example.org
-  - foo.bar
-yarnPath: .custom/path/yarn-3.6.1.cjs
+- example.org
+- foo.bar
 virtualFolder: /custom/__virtual__
+yarnPath: .custom/path/yarn-3.6.1.cjs
 """
 
 EMPTY_YML_FILE = ""
@@ -86,30 +84,7 @@ def _prepare_yarnrc_file(rooted_tmp_path: RootedPath, data: str) -> YarnRc:
 
 def test_parse_yarnrc(rooted_tmp_path: RootedPath) -> None:
     yarn_rc = _prepare_yarnrc_file(rooted_tmp_path, VALID_YARNRC_FILE)
-
-    assert yarn_rc["cacheFolder"] == "./.custom/cache"
-    assert yarn_rc["checksumBehavior"] == "ignore"
-    assert yarn_rc["enableGlobalCache"] is True
-    assert yarn_rc["enableImmutableCache"] is True
-    assert yarn_rc["enableImmutableInstalls"] is True
-    assert yarn_rc["enableMirror"] is False
-    assert yarn_rc["enableScripts"] is False
-    assert yarn_rc["enableStrictSsl"] is False
-    assert yarn_rc["enableTelemetry"] is False
-    assert yarn_rc["globalFolder"] == "/a/global/folder"
-    assert yarn_rc["ignorePath"] is True
-    assert yarn_rc["installStatePath"] == "/custom/install-state.gz"
-    assert yarn_rc["nodeLinker"] == "pnp"
-    assert yarn_rc["patchFolder"] == "/custom/patches"
-    assert yarn_rc["pnpDataPath"] == "/custom/.pnp.data.json"
-    assert yarn_rc["pnpMode"] == "loose"
-    assert yarn_rc["pnpUnpluggedFolder"] == "/some/unplugged/folder"
-    assert yarn_rc["npmRegistryServer"] == "https://registry.alternative.com"
-    assert yarn_rc.registry_server_for_scope("foobar") == "https://registry.foobar.com"
-    assert yarn_rc.registry_server_for_scope("barfoo") == "https://registry.alternative.com"
-    assert yarn_rc["unsafeHttpWhitelist"] == ["example.org", "foo.bar"]
-    assert yarn_rc["yarnPath"] == ".custom/path/yarn-3.6.1.cjs"
-    assert yarn_rc["virtualFolder"] == "/custom/__virtual__"
+    assert yaml.safe_dump(yarn_rc.data) == VALID_YARNRC_FILE
 
 
 def test_parse_empty_yarnrc(rooted_tmp_path: RootedPath) -> None: