rspec returns “PG::Error: ERROR: relation ”table_name“ does not exist”

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礼貌的吻别
礼貌的吻别 2021-02-05 20:43

Environment is REE(2011.12) on rvm, rspec 2.8.0, rails 3.0.6, and pg 0.13.2. Using PostgreSQL 8.3.17 on CentOS 5.6. The db:migrate have work correctly. But rspec have got follow

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  • 2021-02-05 21:34

    This usually happens when you have rspec running while migrating (usually via guard). A simple solution is to quit guard, do the migration and restart guard.

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  • 2021-02-05 21:34

    It typically indicates that there is another open PostgreSql connection. To bubble up the right error try % rake db:test:prepare

    Running test prepare showed the following below and when the open connection (PGAdmin in my case) was closed the issue was resolved.

    rake aborted!
    PG::Error: ERROR:  database "xyz_test" is being accessed by other users
    DETAIL:  There are 1 other session(s) using the database.
    : DROP DATABASE IF EXISTS "xyz_test"
    
    Tasks: TOP => db:test:load => db:test:purge
    (See full trace by running task with --trace)
    
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  • 2021-02-05 21:35

    I've run into this in two instances (updated 6/13/2012):

    First:

    I haven't yet migrated my test database...

    rake db:migrate

    ...which you need to do before both db:test:prepare and db:test:load.

    When you invoke rspec it should prepare and load your database for you anyway. You shouldn't have to do that by hand.

    Second:

    A typo in my migration. I accidentally reversed my table and column names in the parameter list.

    A migration on a Rails 3.1 project:

    def change
      add_column :had_import_errors, :studies, :boolean, :default => false
      add_column :import_data_cache, :studies, :text
    end
    

    ...which is wrong, because has_import_errors and import_data_cache are my column names, and they therefore should come second, not first.

    The correct migration, with the table name first was:

    def change
      add_column :studies, :had_import_errors, :boolean, :default => false
      add_column :studies, :import_data_cache, :text
    end
    
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  • 2021-02-05 21:35

    Just hit this same error, nothing worked but dropping and re-creating the database, this fixed it for me.

    rake db:drop db:create db:migrate

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