Before:
  runtime ale_linters/ruby/steep.vim

After:
  call ale#linter#Reset()

Execute(The steep handler should parse lines correctly):
  AssertEqual
  \ [
  \   {
  \     'lnum': 400,
  \     'col': 18,
  \     'end_col': 45,
  \     'text': 'Method parameters are incompatible with declaration `(untyped, untyped, *untyped, **untyped) { () -> untyped } -> untyped`',
  \     'code': 'Ruby::MethodArityMismatch',
  \     'type': 'E',
  \   },
  \   {
  \     'lnum': 20,
  \     'col': 9,
  \     'end_col': 17,
  \     'text': 'Cannot find implementation of method `::Frobz::FooBarBaz#method_name`',
  \     'code': 'Ruby::MethodDefinitionMissing',
  \     'type': 'W',
  \   },
  \   {
  \     'lnum': 30,
  \     'col': 9,
  \     'end_col': 17,
  \     'text': 'Cannot find implementation of method `::Frobz::FooBarBaz#method_name`',
  \     'code': 'Ruby::MethodDefinitionMissing',
  \     'type': 'I',
  \   },
  \   {
  \     'lnum': 40,
  \     'col': 9,
  \     'end_col': 17,
  \     'text': 'Cannot find implementation of method `::Frobz::FooBarBaz#method_name`',
  \     'code': 'Ruby::MethodDefinitionMissing',
  \     'type': 'I',
  \   },
  \ ],
  \ ale_linters#ruby#steep#HandleOutput(347, [
  \     '# Type checking files:',
  \     '',
  \     '...............................................................................................................................F..........F.F...F.',
  \     '',
  \     'lib/frobz/foobar_baz.rb:400:17: [error] Method parameters are incompatible with declaration `(untyped, untyped, *untyped, **untyped) { () -> untyped } -> untyped`',
  \     '│ Diagnostic ID: Ruby::MethodArityMismatch',
  \     '│',
  \     '└         def frobz(obj, suffix, *args, &block)',
  \     '                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~',
  \     '',
  \     'lib/frobz/foobar_baz.rb:20:8: [warning] Cannot find implementation of method `::Frobz::FooBarBaz#method_name`',
  \     '│ Diagnostic ID: Ruby::MethodDefinitionMissing',
  \     '│',
  \     '└   class FooBarBaz',
  \     '          ~~~~~~~~~',
  \     '',
  \     'lib/frobz/foobar_baz.rb:30:8: [information] Cannot find implementation of method `::Frobz::FooBarBaz#method_name`',
  \     '│ Diagnostic ID: Ruby::MethodDefinitionMissing',
  \     '│',
  \     '└   class FooBarBaz',
  \     '          ~~~~~~~~~',
  \     '',
  \     'lib/frobz/foobar_baz.rb:40:8: [hint] Cannot find implementation of method `::Frobz::FooBarBaz#method_name`',
  \     '│ Diagnostic ID: Ruby::MethodDefinitionMissing',
  \     '│',
  \     '└   class FooBarBaz',
  \     '          ~~~~~~~~~',
  \     '',
  \     'Detected 4 problems from 1 file',
  \ ])

Execute(The steep handler should handle when files are checked and no offenses are found):
  AssertEqual
  \ [],
  \ ale_linters#ruby#steep#HandleOutput(347, [
  \     '# Type checking files:',
  \     '',
  \     '.............................................................................................................................................',
  \     '',
  \     'No type error detected. 🧉',
  \ ])

Execute(The steep handler should handle when no files are checked):
  AssertEqual
  \ [],
  \ ale_linters#ruby#steep#HandleOutput(347, [
  \     '# Type checking files:',
  \     '',
  \     '',
  \     '',
  \     'No type error detected. 🧉',
  \ ])

Execute(The steep handler should handle empty output):
  AssertEqual [], ale_linters#ruby#steep#HandleOutput(347, [''])
  AssertEqual [], ale_linters#ruby#steep#HandleOutput(347, [])