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ryanplusplus merged 2 commits into from
Apr 4, 2026
Merged

Sync connect tests #641

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292190a
Sync connect tests
keiravillekode Mar 29, 2026
9a2c084
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keiravillekode Apr 4, 2026
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27 changes: 27 additions & 0 deletions exercises/practice/connect/.meta/spec_generator.lua
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Original file line number Diff line number Diff line change
@@ -0,0 +1,27 @@
local map = function(t, f)
local mapped = {}
for i, v in ipairs(t) do
mapped[i] = f(v)
end
return mapped
end

local function render_board(board)
return table.concat(map(board, function(row)
return "'" .. row .. "', --"
end), ',\n ')
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end

return {
module_name = 'connect',

generate_test = function(case)
local template = [[
local board = {
%s
}
assert.are.same('%s', connect.winner(board))]]

return template:format(render_board(case.input.board), case.expected)
end
}
6 changes: 6 additions & 0 deletions exercises/practice/connect/.meta/tests.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,12 @@ description = "nobody wins crossing adjacent angles"
[cd61c143-92f6-4a8d-84d9-cb2b359e226b]
description = "X wins crossing from left to right"

[495e33ed-30a9-4012-b46e-d7c4d5fe13c3]
description = "X wins with left-hand dead end fork"

[ab167ab0-4a98-4d0f-a1c0-e1cddddc3d58]
description = "X wins with right-hand dead end fork"

[73d1eda6-16ab-4460-9904-b5f5dd401d0b]
description = "O wins crossing from top to bottom"

Expand Down
124 changes: 71 additions & 53 deletions exercises/practice/connect/connect_spec.lua
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Original file line number Diff line number Diff line change
@@ -1,110 +1,128 @@
local connect = require('connect')

-- LuaFormatter off
describe('connect', function()
it('an empty board has no winner', function()
local board = {
'. . . . .',
' . . . . .',
' . . . . .',
' . . . . .',
' . . . . .'
'. . . . .', -- ,
' . . . . .', -- ,
' . . . . .', -- ,
' . . . . .', -- ,
' . . . . .' --
}
assert.are.same('', connect.winner(board))
end)

it('X can win on a 1x1 board', function()
it('x can win on a 1x1 board', function()
local board = {
'X'
'X' --
}
assert.are.same('X', connect.winner(board))
end)

it('O can win on a 1x1 board', function()
it('o can win on a 1x1 board', function()
local board = {
'O'
'O' --
}
assert.are.same('O', connect.winner(board))
end)

it('only edges does not make a winner', function()
local board = {
'O O O X',
' X . . X',
' X . . X',
' X O O O'
'O O O X', -- ,
' X . . X', -- ,
' X . . X', -- ,
' X O O O' --
}
assert.are.same('', connect.winner(board))
end)

it('illegal diagonal does not make a winner', function()
local board = {
'X O . .',
' O X X X',
' O X O .',
' . O X .',
' X X O O'
'X O . .', -- ,
' O X X X', -- ,
' O X O .', -- ,
' . O X .', -- ,
' X X O O' --
}
assert.are.same('', connect.winner(board))
end)

it('nobody wins crossing adjacent angles', function()
local board = {
'X . . .',
' . X O .',
' O . X O',
' . O . X',
' . . O .'
'X . . .', -- ,
' . X O .', -- ,
' O . X O', -- ,
' . O . X', -- ,
' . . O .' --
}
assert.are.same('', connect.winner(board))
end)

it('X wins crossing from left to right', function()
it('x wins crossing from left to right', function()
local board = {
'. O . .',
' O X X X',
' O X O .',
' X X O X',
' . O X .'
'. O . .', -- ,
' O X X X', -- ,
' O X O .', -- ,
' X X O X', -- ,
' . O X .' --
}
assert.are.same('X', connect.winner(board))
end)

it('O wins crossing from top to bottom', function()
it('x wins with left-hand dead end fork', function()
local board = {
'. O . .',
' O X X X',
' O O O .',
' X X O X',
' . O X .'
'. . X .', -- ,
' X X . .', -- ,
' . X X X', -- ,
' O O O O' --
}
assert.are.same('X', connect.winner(board))
end)

it('x wins with right-hand dead end fork', function()
local board = {
'. . X X', -- ,
' X X . .', -- ,
' . X X .', -- ,
' O O O O' --
}
assert.are.same('X', connect.winner(board))
end)

it('o wins crossing from top to bottom', function()
local board = {
'. O . .', -- ,
' O X X X', -- ,
' O O O .', -- ,
' X X O X', -- ,
' . O X .' --
}
assert.are.same('O', connect.winner(board))
end)

it('X wins using a convoluted path', function()
it('x wins using a convoluted path', function()
local board = {
'. X X . .',
' X . X . X',
' . X . X .',
' . X X . .',
' O O O O O'
'. X X . .', -- ,
' X . X . X', -- ,
' . X . X .', -- ,
' . X X . .', -- ,
' O O O O O' --
}
assert.are.same('X', connect.winner(board))
end)

it('X wins using a spiral path', function()
it('x wins using a spiral path', function()
local board = {
'O X X X X X X X X',
' O X O O O O O O O',
' O X O X X X X X O',
' O X O X O O O X O',
' O X O X X X O X O',
' O X O O O X O X O',
' O X X X X X O X O',
' O O O O O O O X O',
' X X X X X X X X O'
'O X X X X X X X X', -- ,
' O X O O O O O O O', -- ,
' O X O X X X X X O', -- ,
' O X O X O O O X O', -- ,
' O X O X X X O X O', -- ,
' O X O O O X O X O', -- ,
' O X X X X X O X O', -- ,
' O O O O O O O X O', -- ,
' X X X X X X X X O' --
}
assert.are.same('X', connect.winner(board))
end)
end)
-- LuaFormatter on
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