tests: Fix guess tests for 2023

tz.guess() works by checking offsets starting with <currentYear - 2>.
Some zones had their last transition in 2020, which is now outside
the range of guesses, so their guess answers changed.

Author: gilmoreorless

tests/zones/america/dawson.js

@@ -4,9 +4,9 @@ var helpers = require("../../helpers/helpers");
 
 exports["America/Dawson"] = {
 
-	"guess:by:offset" : helpers.makeTestGuess("America/Dawson", { offset: true, expect: "America/Whitehorse" }),
+	"guess:by:offset" : helpers.makeTestGuess("America/Dawson", { offset: true, expect: "America/Phoenix" }),
 
-	"guess:by:abbr" : helpers.makeTestGuess("America/Dawson", { abbr: true, expect: "America/Whitehorse" }),
+	"guess:by:abbr" : helpers.makeTestGuess("America/Dawson", { abbr: true, expect: "America/Phoenix" }),
 
 	"1900" : helpers.makeTestYear("America/Dawson", [
 		["1900-08-20T09:17:40+00:00", "00:17:40", "YST", 540]

tests/zones/america/whitehorse.js

@@ -4,9 +4,9 @@ var helpers = require("../../helpers/helpers");
 
 exports["America/Whitehorse"] = {
 
-	"guess:by:offset" : helpers.makeTestGuess("America/Whitehorse", { offset: true }),
+	"guess:by:offset" : helpers.makeTestGuess("America/Whitehorse", { offset: true, expect: "America/Phoenix" }),
 
-	"guess:by:abbr" : helpers.makeTestGuess("America/Whitehorse", { abbr: true }),
+	"guess:by:abbr" : helpers.makeTestGuess("America/Whitehorse", { abbr: true, expect: "America/Phoenix" }),
 
 	"1900" : helpers.makeTestYear("America/Whitehorse", [
 		["1900-08-20T09:00:12+00:00", "00:00:12", "YST", 540]

tests/zones/antarctica/casey.js

@@ -4,9 +4,9 @@ var helpers = require("../../helpers/helpers");
 
 exports["Antarctica/Casey"] = {
 
-	"guess:by:offset" : helpers.makeTestGuess("Antarctica/Casey", { offset: true }),
+	"guess:by:offset" : helpers.makeTestGuess("Antarctica/Casey", { offset: true, expect: "Asia/Sakhalin" }),
 
-	"guess:by:abbr" : helpers.makeTestGuess("Antarctica/Casey", { abbr: true }),
+	"guess:by:abbr" : helpers.makeTestGuess("Antarctica/Casey", { abbr: true, expect: "Asia/Sakhalin" }),
 
 	"1969" : helpers.makeTestYear("Antarctica/Casey", [
 		["1969-01-01T00:00:00+00:00", "08:00:00", "+08", -480]

tests/zones/canada/yukon.js

@@ -4,9 +4,9 @@ var helpers = require("../../helpers/helpers");
 
 exports["Canada/Yukon"] = {
 
-	"guess:by:offset" : helpers.makeTestGuess("Canada/Yukon", { offset: true, expect: "America/Whitehorse" }),
+	"guess:by:offset" : helpers.makeTestGuess("Canada/Yukon", { offset: true, expect: "America/Phoenix" }),
 
-	"guess:by:abbr" : helpers.makeTestGuess("Canada/Yukon", { abbr: true, expect: "America/Whitehorse" }),
+	"guess:by:abbr" : helpers.makeTestGuess("Canada/Yukon", { abbr: true, expect: "America/Phoenix" }),
 
 	"1900" : helpers.makeTestYear("Canada/Yukon", [
 		["1900-08-20T09:00:12+00:00", "00:00:12", "YST", 540]

tests/zones/europe/volgograd.js

@@ -4,9 +4,9 @@ var helpers = require("../../helpers/helpers");
 
 exports["Europe/Volgograd"] = {
 
-	"guess:by:offset" : helpers.makeTestGuess("Europe/Volgograd", { offset: true }),
+	"guess:by:offset" : helpers.makeTestGuess("Europe/Volgograd", { offset: true, expect: "Europe/Moscow" }),
 
-	"guess:by:abbr" : helpers.makeTestGuess("Europe/Volgograd", { abbr: true }),
+	"guess:by:abbr" : helpers.makeTestGuess("Europe/Volgograd", { abbr: true, expect: "Europe/Moscow" }),
 
 	"1920" : helpers.makeTestYear("Europe/Volgograd", [
 		["1920-01-02T21:02:20+00:00", "00:02:20", "+03", -180]