[t/subcommands/fetch.t] preferred single quotes

...to <> quotes.

t/subcommands/fetch.t

@@ -30,13 +30,13 @@ plan 24;
 
 given $core {
     # [T] Fetch a project: Succeed.
-    is .state-of(<will-succeed>), gone, "State is now 'gone'";
+    is .state-of('will-succeed'), gone, "State is now 'gone'";
     is .fetch(<will-succeed>), success, "Fetch a project: Succeed";
-    is .state-of(<will-succeed>), fetched, "State after: 'fetched'";
+    is .state-of('will-succeed'), fetched, "State after: 'fetched'";
 
     # [T] Fetch a project; an unexpected error occurs: Fail.
     is .fetch(<will-fail>), failure, "Fetch a project: Fail";
-    is .state-of(<will-fail>), gone, "State after: 'gone'";
+    is .state-of('will-fail'), gone, "State after: 'gone'";
 
     # [T] Fetch a project with dependencies: Fetch dependencies too.
     for <A B C D> -> $dep {
@@ -49,17 +49,17 @@ given $core {
 
     # [T] Fetch a project with circular dependencies: Fail.
     is .fetch(<circ-deps>), failure, "Fetch a project with circ deps: fail";
-    is .state-of(<circ-deps>), gone, "State after of circ-deps: 'gone'";
-    is .state-of(<E>), gone, "State after of E: 'gone'";
+    is .state-of('circ-deps'), gone, "State after of circ-deps: 'gone'";
+    is .state-of('E'), gone, "State after of E: 'gone'";
 
     # [T] Fetch a project whose direct dependency fails: Fail.
     is .fetch(<dirdep-fails>), failure, "Fail on direct dependency failure";
-    is .state-of(<dirdep-fails>), gone, "State after of dirdep-fails: 'gone'";
-    is .state-of(<will-fail>), gone, "State after of will-fail: 'gone'";
+    is .state-of('dirdep-fails'), gone, "State after of dirdep-fails: 'gone'";
+    is .state-of('will-fail'), gone, "State after of will-fail: 'gone'";
 
     # [T] Fetch a project whose indirect dependency fails: Fail.
     is .fetch(<indir-fails>), failure, "Fail on indirect dependency failure";
-    is .state-of(<indir-fails>), gone, "State after of indir-fails: 'gone'";
-    is .state-of(<dirdep-fails>), gone, "State after of dirdep-fails: 'gone'";
-    is .state-of(<will-fail>), gone, "State after of will-fail: 'gone'";
+    is .state-of('indir-fails'), gone, "State after of indir-fails: 'gone'";
+    is .state-of('dirdep-fails'), gone, "State after of dirdep-fails: 'gone'";
+    is .state-of('will-fail'), gone, "State after of will-fail: 'gone'";
 }