tests.connection: test auth varieties

Also fix password auth in the nats-server launcher.

tests/connection.zig

@@ -5,14 +5,40 @@ const nats = @import("nats");
 const util = @import("./util.zig");
 
 test "nats.Connection.connectTo" {
+    {
         var server = try util.TestServer.launch(.{});
         defer server.stop();
 
-    {
         try nats.init(nats.default_spin_count);
         defer nats.deinit();
 
         const connection = try nats.Connection.connectTo(nats.default_server_url);
         defer connection.destroy();
     }
+
+    {
+        var server = try util.TestServer.launch(.{
+            .auth = .{ .token = "test_token" },
+        });
+        defer server.stop();
+
+        try nats.init(nats.default_spin_count);
+        defer nats.deinit();
+
+        const connection = try nats.Connection.connectTo("nats://test_token@127.0.0.1:4222");
+        defer connection.destroy();
+    }
+
+    {
+        var server = try util.TestServer.launch(.{ .auth = .{
+            .password = .{ .user = "user", .pass = "password" },
+        } });
+        defer server.stop();
+
+        try nats.init(nats.default_spin_count);
+        defer nats.deinit();
+
+        const connection = try nats.Connection.connectTo("nats://user:password@127.0.0.1:4222");
+        defer connection.destroy();
+    }
 }

tests/util.zig

@@ -40,7 +40,7 @@ pub const TestServer = struct {
             const auth: [4][]const u8 = switch (options.auth) {
                 .none => .{""} ** 4,
                 .token => |tok| .{ "--auth", tok, "", "" },
-                .password => |auth| .{ "--user", auth.user, "--password", auth.pass },
+                .password => |auth| .{ "--user", auth.user, "--pass", auth.pass },
             };
 
             break :blk executable ++ listen ++ port ++ auth;
@@ -64,6 +64,7 @@ pub const TestServer = struct {
         }
 
         _ = try child.kill();
+        std.debug.print("output: {s}\n", .{poller.fifo(.stderr).buf});
         return error.NoLaunchStringFound;
     }