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module Athena::Spec::Methods #

Namespace for common/helpful testing methods.

This module can be included into your spec_helper in order to allow your specs to use them all. This module is also included into ASPEC::TestCase by default to allow using them within your unit tests as well.

May be reopened to add additional application specific helpers.

Extended modules

Athena::Spec::Methods

Direct including types

Athena::Spec::TestCase

Methods#

#assert_compile_time_error(message : String, code : String, *, line : Int32 = __LINE__, file : String = __FILE__) : Nil#

Executes the provided Crystal code and asserts it results in a compile time error with the provided message.

ASPEC::Methods.assert_compile_time_error "can't instantiate abstract class Foo", <<-CR
  abstract class Foo; end
  Foo.new
CR

Note

When files are required within the code, they are relative to the file calling this method.

View source

#assert_compiles(code : String, *, line : Int32 = __LINE__, file : String = __FILE__) : Nil#

Similar to .assert_compile_time_error, but asserts the provided Crystal code successfully compiles.

ASPEC::Methods.assert_compiles <<-CR
  raise "Still passes"
CR

Note

When files are required within the code, they are relative to the file calling this method.

View source

#assert_executes(code : String, *, line : Int32 = __LINE__, file : String = __FILE__) : Nil#

Similar to .assert_runtime_error, but asserts the provided Crystal code successfully executes.

ASPEC::Methods.assert_executes <<-CR
  puts 2 + 2
CR

Note

When files are required within the code, they are relative to the file calling this method.

View source

#assert_runtime_error(message : String, code : String, *, line : Int32 = __LINE__, file : String = __FILE__) : Nil#

Executes the provided Crystal code and asserts it results in a runtime error with the provided message. This can be helpful in order to test something in isolation, without affecting other test cases.

ASPEC::Methods.assert_runtime_error "Oh noes!", <<-CR
 raise "Oh noes!"
CR

Note

When files are required within the code, they are relative to the file calling this method.

View source

#run_executable(path : String, args : Array(String) = [] of String, & : String, String, Process::Status -> ) : Nil#

Runs the executable at the given path, optionally with the provided args.

The standard output, error output, and status of the execution are yielded.

require "athena-spec"

ASPEC::Methods.run_executable "/usr/bin/ls" do |output, error, status|
  output # => "docs\n" + "LICENSE\n" + "README.md\n" + "shard.yml\n" + "spec\n" + "src\n"
  error  # => ""
  status # => #<Process::Status:0x7f7bc9befb70 @exit_status=0>
end
View source

#run_executable(path : String, input : IO, args : Array(String) = [] of String, & : String, String, Process::Status -> ) : Nil#

Runs the executable at the given path, with the given input, optionally with the provided args.

The standard output, error output, and status of the execution are yielded.

require "athena-spec"

input = IO::Memory.new %({"id":1})

ASPEC::Methods.run_executable "jq", input, [".", "-c"] do |output, error, status|
  output # => "{\"id\":1}\n"
  error  # => ""
  status # => #<Process::Status:0x7f26ec698b70 @exit_status=0>
end

invalid_input = IO::Memory.new %({"id"1})

ASPEC::Methods.run_executable "jq", invalid_input, [".", "-c"] do |output, error, status|
  output # => ""
  error  # => "parse error: Expected separator between values at line 1, column 7\n"
  status # => #<Process::Status:0x7f0217496900 @exit_status=1024>
end
View source