Merge pull request #238013 from tweag/lib.path.removePrefix

`lib.path.removePrefix`: init

1 files changed, 18 insertions, 1 deletions

diff --git a/lib/path/tests/unit.nix b/lib/path/tests/unit.nix
index 9c5b752cf64a..3e4b216f099f 100644
--- a/lib/path/tests/unit.nix
+++ b/lib/path/tests/unit.nix
@@ -3,7 +3,7 @@
 { libpath }:
 let
   lib = import libpath;
-  inherit (lib.path) hasPrefix append subpath;
+  inherit (lib.path) hasPrefix removePrefix append subpath;
 
   cases = lib.runTests {
     # Test examples from the lib.path.append documentation
@@ -57,6 +57,23 @@ let
       expected = true;
     };
 
+    testRemovePrefixExample1 = {
+      expr = removePrefix /foo /foo/bar/baz;
+      expected = "./bar/baz";
+    };
+    testRemovePrefixExample2 = {
+      expr = removePrefix /foo /foo;
+      expected = "./.";
+    };
+    testRemovePrefixExample3 = {
+      expr = (builtins.tryEval (removePrefix /foo/bar /foo)).success;
+      expected = false;
+    };
+    testRemovePrefixExample4 = {
+      expr = removePrefix /. /foo;
+      expected = "./foo";
+    };
+
     # Test examples from the lib.path.subpath.isValid documentation
     testSubpathIsValidExample1 = {
       expr = subpath.isValid null;