chore: import upstream snapshot with attribution

testing/postgres-client-tests/ruby/pg-test.rb

@@ -0,0 +1,49 @@
+#!/usr/bin/ruby
+
+require 'pg'
+require 'test/unit'
+
+extend Test::Unit::Assertions
+
+user = ARGV[0]
+port = ARGV[1]
+db   = "postgres"
+
+queries = [
+  "create table test (pk int, value int, d1 decimal(9, 3), f1 float, c1 char(10), t1 text, primary key(pk))",
+  "select * from test",
+  "insert into test (pk, value, d1, f1, c1, t1) values (0,0,0.0,0.0,'abc','a1')",
+  "select * from test",
+  "select dolt_add('-A');",
+  "select dolt_commit('-m', 'my commit')",
+  "select COUNT(*) FROM dolt.log",
+  "select dolt_checkout('-b', 'mybranch')",
+  "insert into test (pk, value, d1, f1, c1, t1) values (1,1, 123456.789, 420.42,'example','some text')",
+  "select dolt_commit('-a', '-m', 'my commit2')",
+  "select dolt_checkout('main')",
+  "select dolt_merge('mybranch')",
+  "select COUNT(*) FROM dolt.log",
+]
+
+# Smoke test the queries to make sure nothing blows up
+conn = PG::Connection.new(:host => "localhost", :user => user, :dbname => db, :port => port, :password => "password")
+queries.each do |query|
+  res = conn.query(query)
+end
+
+# Then make sure we can read some data back
+res = conn.query("SELECT * from test where pk = 1;")
+rowCount = 0
+res.each do |row|
+  rowCount += 1
+  assert_equal 1, row["pk"].to_i
+  assert_equal 1, row["value"].to_i
+  assert_equal 123456.789, row["d1"].to_f
+  assert_equal 420.42, row["f1"].to_f
+  assert_equal "example   ", row["c1"]
+  assert_equal "some text", row["t1"]
+end
+assert_equal 1, rowCount
+
+conn.close()
+exit(0)