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This method excludes the specified record (or collection of records) from the resulting relation. For example: `Post.excluding(post)`, `Post.excluding(post_one, post_two)`, and `post.comments.excluding(comment)`. This is short-hand for `Post.where.not(id: post.id)` (for a single record) and `Post.where.not(id: [post_one.id, post_two.id])` (for a collection).
71 lines
2.2 KiB
Ruby
71 lines
2.2 KiB
Ruby
# frozen_string_literal: true
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require "cases/helper"
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require "models/post"
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require "models/comment"
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class ExcludingTest < ActiveRecord::TestCase
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fixtures :posts, :comments
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def test_result_set_does_not_include_single_excluded_record
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post = posts(:welcome)
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assert_not_includes Post.excluding(post).to_a, post
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end
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def test_result_set_does_not_include_collection_of_excluded_records
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post_welcome = posts(:welcome)
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post_thinking = posts(:thinking)
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relation = Post.excluding(post_welcome, post_thinking)
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assert_not_includes relation.to_a, post_welcome
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assert_not_includes relation.to_a, post_thinking
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end
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def test_result_set_through_association_does_not_include_single_excluded_record
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post = posts(:welcome)
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comment_greetings = comments(:greetings)
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comment_more_greetings = comments(:more_greetings)
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relation = post.comments.excluding(comment_greetings)
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assert_not_includes relation.to_a, comment_greetings
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assert_includes relation.to_a, comment_more_greetings
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end
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def test_result_set_through_association_does_not_include_collection_of_excluded_records
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post = posts(:welcome)
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comment_greetings = comments(:greetings)
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comment_more_greetings = comments(:more_greetings)
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relation = post.comments.excluding([comment_greetings, comment_more_greetings])
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assert_not_includes relation.to_a, comment_greetings
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assert_not_includes relation.to_a, comment_more_greetings
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end
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def test_raises_on_no_arguments
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exception = assert_raises ArgumentError do
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Post.excluding()
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end
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assert_equal "You must pass at least one Post object to #excluding.", exception.message
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end
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def test_raises_on_empty_collection_argument
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exception = assert_raises ArgumentError do
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Post.excluding([])
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end
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assert_equal "You must pass at least one Post object to #excluding.", exception.message
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end
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def test_raises_on_record_from_different_class
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post = posts(:welcome)
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comment = comments(:greetings)
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exception = assert_raises ArgumentError do
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Post.excluding(post, comment)
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end
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assert_equal "You must only pass a single or collection of Post objects to #excluding.", exception.message
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end
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end
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