From 88bdcba6faf9bbcaa4c31acffb038a44b7b93de1 Mon Sep 17 00:00:00 2001
From: Mark Tozzi <mark.tozzi@gmail.com>
Date: Wed, 23 Apr 2025 07:29:13 -0400
Subject: [PATCH] ESQL - add some CSV tests for current timezone behavior
 (#127181)

I just needed to check the current behavior around this, and figured I'd add the queries I used as CSV tests for future reference.
---
 .../src/main/resources/date.csv-spec          | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/x-pack/plugin/esql/qa/testFixtures/src/main/resources/date.csv-spec b/x-pack/plugin/esql/qa/testFixtures/src/main/resources/date.csv-spec
index ee51a9bd3adc1..72185f73f6a36 100644
--- a/x-pack/plugin/esql/qa/testFixtures/src/main/resources/date.csv-spec
+++ b/x-pack/plugin/esql/qa/testFixtures/src/main/resources/date.csv-spec
@@ -200,6 +200,30 @@ birth_date:date         |bd:date
 1964-06-02T00:00:00.000Z|1964-06-02T00:00:00.000Z
 ;
 
+convert with zones
+ROW str = "2025-04-11T05:00:00+0400"
+| EVAL dt = TO_DATETIME(str);
+
+str:String                 | dt:datetime
+"2025-04-11T05:00:00+0400" | 2025-04-11T01:00:00.000Z
+;
+
+equality with zones
+ROW dt = TO_DATETIME("2025-04-11T01:00:00.000Z")
+| EVAL bool = "2025-04-11T05:00:00+0400" == dt;
+
+dt:datetime              | bool:boolean
+2025-04-11T01:00:00.000Z | true
+;
+
+convert no zone
+ROW str = "2025-04-11T05:00:00.000"
+| EVAL dt = TO_DATETIME(str);
+
+str:String                 | dt:datetime
+"2025-04-11T05:00:00.000" | 2025-04-11T05:00:00.000Z
+;
+
 convertFromString#[skip:-8.13.99, reason: default date formatter is changed in 8.14]
 // tag::to_datetime-str[]
 ROW string = ["1953-09-02T00:00:00.000Z", "1964-06-02T00:00:00.000Z", "1964-06-02 00:00:00"]