From c1c948b149e88c72fc475ff4b5f01f50666cfd17 Mon Sep 17 00:00:00 2001
From: John Mettraux <jmettraux@gmail.com>
Date: Sat, 20 Feb 2021 16:15:28 +0900
Subject: [PATCH] Explore Time.parse vs PST in Ruby 1.9 to 2.7, gh-30

---
 .github/workflows/test.yaml |  2 +-
 spec/module_spec.rb         | 31 +++++++++++++++++++++++++++++++
 spec/spec_helper.rb         |  5 +----
 3 files changed, 33 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index f94ef40..d75bee5 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -14,7 +14,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        ruby: [ '2.3', '2.5', '2.6', '2.7', jruby-9.2 ]
+        ruby: [ '1.9', '2.1', '2.3', '2.5', '2.6', '2.7', jruby-9.2 ]
         experimental: [ false ]
         tz: [ '', 'UTC', 'Asia/Tokyo', 'America/Chicago' ]
       fail-fast: false
diff --git a/spec/module_spec.rb b/spec/module_spec.rb
index 6dde06d..164e331 100644
--- a/spec/module_spec.rb
+++ b/spec/module_spec.rb
@@ -236,6 +236,37 @@
       expect(t.to_zs).to eq('2019-01-01 12:10:00 Asia/Shanghai')
     end
 
+    # https://en.wikipedia.org/wiki/List_of_time_zone_abbreviations
+    # https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
+
+    [ # IN                | Time.parse            | EtOrbi.parse  | in timezone)
+
+      '2015/03/08 01:59:59 | 20150308 015959 +0300 | 20150308 015959 +0300 | Europe/Moscow',
+      #'2021-01-01 7AM PST | 20210101 070000 -0800 | 20210101 070000 +0000',
+
+    ].each do |l|
+
+      ss = l.split(/\s*\|\s*/)
+      l0 = ss.join(' | ')
+
+      h = OpenStruct.new(s: ss[0], ts: ss[1], eots: ss[2], inzone: ss[3])
+
+      f = '%Y%m%d %H%M%S %z'
+      title = "parses #{h.s.inspect}"
+      title = "#{title} in #{h.inzone}" if h.inzone
+
+      it(title) do
+
+        t, ot = in_zone(h.inzone) { [ Time.parse(h.s), EtOrbi.parse(h.s) ] }
+
+        l1 = [ h.s, t.strftime(f), ot.strftime(f), h.inzone ]
+          .compact
+          .join(' | ')
+
+        expect(l1).to eq(l0)
+      end
+    end
+
     context 'when Chronic is defined' do
 
       before :each do
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index c16a975..cfbc356 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -8,12 +8,9 @@
 ENV['_TZ'] = ENV['TZ'] # preserve original TZ if any
 
 require 'pp'
+require 'ostruct'
 
 require 'chronic'
-  #
-p defined?(Chronic)
-p defined?(::Chronic)
-  #
 ::Khronic = ::Chronic
 Object.send(:remove_const, :Chronic)