fix ulimit tests

Not sure why CI wasn't failing.

License: MIT
Signed-off-by: Steven Allen <steven@stebalien.com>

cmd/ipfs/util/ulimit_test.go

@@ -16,7 +16,7 @@ func TestManageFdLimit(t *testing.T) {
 		t.Errorf("Cannot manage file descriptors")
 	}
 
-	if maxFds != uint64(2048) {
+	if maxFds != uint64(8192) {
 		t.Errorf("Maximum file descriptors default value changed")
 	}
 }
@@ -38,16 +38,13 @@ func TestManageInvalidNFds(t *testing.T) {
 		t.Fatal("Cannot set the IPFS_FD_MAX env variable")
 	}
 
-	// call to check and set the maximum file descriptor from the env
-	setMaxFds()
-
 	if _, _, err := ManageFdLimit(); err == nil {
 		t.Errorf("ManageFdLimit should return an error")
 	} else if err != nil {
 		flag := strings.Contains(err.Error(),
-			"cannot set rlimit, IPFS_FD_MAX is larger than the hard limit")
+			"failed to raise ulimit to IPFS_FD_MAX")
 		if !flag {
-			t.Errorf("ManageFdLimit returned unexpected error")
+			t.Error("ManageFdLimit returned unexpected error", err)
 		}
 	}
 
@@ -74,11 +71,6 @@ func TestManageFdLimitWithEnvSet(t *testing.T) {
 		t.Fatal("Cannot set the IPFS_FD_MAX env variable")
 	}
 
-	setMaxFds()
-	if maxFds != uint64(value) {
-		t.Errorf("The maxfds is not set from IPFS_FD_MAX")
-	}
-
 	if _, _, err = ManageFdLimit(); err != nil {
 		t.Errorf("Cannot manage file descriptor count")
 	}