Require rspec/autorun to run one line spec file

[yahonda]

• Without this commit

$ ruby active_record_gem_spec.rb
Fetching https://github.com/rails/rails.git
... snip ...
Using rails 6.2.0.alpha from https://github.com/rails/rails.git (at master@afc79e3)
$

• With this commit

$ ruby active_record_gem_spec.rb
Fetching https://github.com/rails/rails.git
... snip ...
Using rails 6.2.0.alpha from https://github.com/rails/rails.git (at master@afc79e3)
-- create_table(:posts, {:force=>true})
D, [2021-01-01T17:27:35.727438 #554514] DEBUG -- :    (20.9ms)  DROP TABLE "POSTS"
D, [2021-01-01T17:27:35.733266 #554514] DEBUG -- :    (5.4ms)  DROP SEQUENCE "POSTS_SEQ"
D, [2021-01-01T17:27:35.748060 #554514] DEBUG -- :    (14.4ms)  CREATE TABLE "POSTS" ("ID" NUMBER(38) NOT NULL PRIMARY KEY)
D, [2021-01-01T17:27:35.751081 #554514] DEBUG -- :    (2.8ms)  CREATE SEQUENCE "POSTS_SEQ" START WITH 1
   -> 0.1797s
-- create_table(:comments, {:force=>true})
D, [2021-01-01T17:27:35.869071 #554514] DEBUG -- :    (21.4ms)  DROP TABLE "COMMENTS"
D, [2021-01-01T17:27:35.875660 #554514] DEBUG -- :    (6.3ms)  DROP SEQUENCE "COMMENTS_SEQ"
D, [2021-01-01T17:27:35.884094 #554514] DEBUG -- :    (8.0ms)  CREATE TABLE "COMMENTS" ("ID" NUMBER(38) NOT NULL PRIMARY KEY, "POST_ID" NUMBER(38))
D, [2021-01-01T17:27:35.887143 #554514] DEBUG -- :    (2.8ms)  CREATE SEQUENCE "COMMENTS_SEQ" START WITH 1
   -> 0.1359s
D, [2021-01-01T17:27:36.043216 #554514] DEBUG -- :   ActiveRecord::InternalMetadata Load (1.4ms)  SELECT "AR_INTERNAL_METADATA".* FROM "AR_INTERNAL_METADATA" WHERE "AR_INTERNAL_METADATA"."KEY" = :a1 FETCH FIRST :a2 ROWS ONLY  [["key", "environment"], ["LIMIT", 1]]
D, [2021-01-01T17:27:36.688610 #554514] DEBUG -- :   Post Create (8.4ms)  INSERT INTO "POSTS" ("ID") VALUES (:a1)  [["id", 1]]
D, [2021-01-01T17:27:37.203028 #554514] DEBUG -- :   Comment Create (7.5ms)  INSERT INTO "COMMENTS" ("ID") VALUES (:a1)  [["id", 1]]
D, [2021-01-01T17:27:37.214316 #554514] DEBUG -- :   Comment Update (3.7ms)  UPDATE "COMMENTS" SET "POST_ID" = :a1 WHERE "COMMENTS"."ID" = :a2  [["post_id", 1], ["id", 1]]
D, [2021-01-01T17:27:37.221641 #554514] DEBUG -- :    (5.0ms)  SELECT COUNT(*) FROM "COMMENTS" WHERE "COMMENTS"."POST_ID" = :a1  [["post_id", 1]]
D, [2021-01-01T17:27:37.226691 #554514] DEBUG -- :    (4.2ms)  SELECT COUNT(*) FROM "COMMENTS"
D, [2021-01-01T17:27:37.231298 #554514] DEBUG -- :   Comment Load (3.5ms)  SELECT "COMMENTS".* FROM "COMMENTS" ORDER BY "COMMENTS"."ID" ASC FETCH FIRST :a1 ROWS ONLY  [["LIMIT", 1]]
D, [2021-01-01T17:27:37.236094 #554514] DEBUG -- :   Post Load (3.2ms)  SELECT "POSTS".* FROM "POSTS" WHERE "POSTS"."ID" = :a1 FETCH FIRST :a2 ROWS ONLY  [["id", 1], ["LIMIT", 1]]
.

Finished in 1.67 seconds (files took 0.1944 seconds to load)
1 example, 0 failures

$

Refer
https://relishapp.com/rspec/rspec-core/v/3-6/docs/command-line/run-with-ruby-command

[yahonda]

Actually, this pull request is not tested because active_record_gem_spec.rb runs as of the master branch, not each pull request.

[yahonda]

Merging this pull request without waiting for specs.