Bugfix isAtPath to accept identical prefix/path values

The previous fix checking for length being less than 2 was not accurate
because it was letting paths with just a trailing slash to pass through.
We roll it back to checking if the length is exactly 1 in difference, and
also do an earlier check for prefix and path being identical in order to
better handle the exception cases.

Signed-off-by: Jeremy Ho <jujaga@gmail.com>

app/src/components/utils.js

@@ -306,11 +306,12 @@ const utils = {
    */
   isAtPath(prefix, path) {
     if (typeof prefix !== 'string' || typeof path !== 'string') return false;
+    if (prefix === path) return true; // Matching strings are always at the at the path
 
     const pathParts = path.split(DELIMITER).filter(part => part);
     const prefixParts = prefix.split(DELIMITER).filter(part => part);
     return prefixParts.every((part, i) => pathParts[i] === part)
-      && pathParts.filter(part => !prefixParts.includes(part)).length < 2;
+      && pathParts.filter(part => !prefixParts.includes(part)).length === 1;
   },
 
   /**

app/tests/unit/components/utils.spec.js

@@ -455,20 +455,22 @@ describe('isAtPath', () => {
   it.each([
     [false, undefined, undefined],
     [false, null, null],
-    [true, '', ''], // Root level empty string identies should technically be true
+    [true, '', ''], // Root level empty string identities should technically be true
     [true, '', 'file'],
     [false, '', 'file/bleep'],
     [true, '/', 'file'],
     [false, '/', 'file/bleep'],
-    [true, 'foo', 'foo'], // Root level file identies should be true
+    [true, 'foo', 'foo'], // Root level file identities should be true
     [false, 'foo', 'bar'], // Non-matching root level path and prefix should be false
     [true, 'foo', 'foo/bar'],
     [true, 'foo', '/foo/bar'],
     [true, '/foo', 'foo/bar'],
     [true, '/foo', '/foo/bar'],
     [true, 'a/b', 'a/b/foo.jpg'],
+    [false, 'a/b', 'a/b/'], // Trailing slashes references the folder and should be excluded
     [false, 'a/b', 'a/b/z/deep.jpg'],
     [false, 'a/b', 'a/b/y/z/deep.jpg'],
+    [false, 'a/b/c', 'a/b/c/'], // Trailing slashes references the folder and should be excluded
     [false, 'a/b/c', 'a/bar.png'],
     [false, 'c/b/a', 'a/b/c/bar.png'],
     [false, 'c/a/b', 'a/b/c/bar.png'],