140 lines
4.4 KiB
Lua
140 lines
4.4 KiB
Lua
local p_scroller = require('telescope.pickers.scroller')
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local eq = assert.are.same
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describe('scroller', function()
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local max_results = 10
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describe('ascending cycle', function()
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local cycle_scroller = p_scroller.create('cycle', 'ascending')
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it('should return values within the max results', function()
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eq(5, cycle_scroller(max_results, max_results, 5))
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end)
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it('should return 0 at 0', function()
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eq(0, cycle_scroller(max_results, max_results, 0))
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end)
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it('should cycle you to the top when you go below 0', function()
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eq(max_results - 1, cycle_scroller(max_results, max_results, -1))
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end)
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it('should cycle you to 0 when you go past the results', function()
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eq(0, cycle_scroller(max_results, max_results, max_results + 1))
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end)
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it('should cycle when current results is less than max_results', function()
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eq(0, cycle_scroller(max_results, 5, 7))
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end)
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end)
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describe('ascending limit', function()
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local limit_scroller = p_scroller.create('limit', 'ascending')
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it('should return values within the max results', function()
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eq(5, limit_scroller(max_results, max_results, 5))
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end)
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it('should return 0 at 0', function()
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eq(0, limit_scroller(max_results, max_results, 0))
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end)
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it('should not cycle', function()
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eq(0, limit_scroller(max_results, max_results, -1))
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end)
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it('should not cycle you to 0 when you go past the results', function()
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eq(max_results - 1, limit_scroller(max_results, max_results, max_results + 1))
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end)
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it('should stay at current results when current results is less than max_results', function()
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local current = 5
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eq(current - 1, limit_scroller(max_results, current, 7))
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end)
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end)
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describe('descending cycle', function()
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local cycle_scroller = p_scroller.create('cycle', 'descending')
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it('should return values within the max results', function()
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eq(5, cycle_scroller(max_results, max_results, 5))
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end)
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it('should return max_results - 1 at 0', function()
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eq(0, cycle_scroller(max_results, max_results, 0))
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end)
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it('should cycle you to the bot when you go below 0', function()
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eq(max_results - 1, cycle_scroller(max_results, max_results, -1))
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end)
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it('should cycle you to 0 when you go past the results', function()
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eq(0, cycle_scroller(max_results, max_results, max_results + 1))
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end)
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it('should cycle when current results is less than max_results', function()
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eq(9, cycle_scroller(max_results, 5, 4))
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end)
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end)
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describe('descending limit', function()
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local limit_scroller = p_scroller.create('limit', 'descending')
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it('should return values within the max results', function()
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eq(5, limit_scroller(max_results, max_results, 5))
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end)
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it('should return 0 at 0', function()
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eq(0, limit_scroller(max_results, max_results, 0))
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end)
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it('should not cycle', function()
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eq(0, limit_scroller(max_results, max_results, -1))
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end)
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it('should not cycle you to 0 when you go past the results', function()
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eq(max_results - 1, limit_scroller(max_results, max_results, max_results + 1))
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end)
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it('should stay at current results when current results is less than max_results', function()
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local current = 5
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eq(max_results - current, limit_scroller(max_results, current, 4))
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end)
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end)
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describe('https://github.com/nvim-telescope/telescope.nvim/pull/293#issuecomment-751463224', function()
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it('should handle having many more results than necessary', function()
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local scroller = p_scroller.create('cycle', 'descending')
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-- 23 112 23
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eq(0, scroller(23, 112, 23))
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end)
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end)
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describe('should give top, middle and bottom index', function()
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it('should handle middle index', function()
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eq(5, p_scroller.middle(nil, 11, nil))
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eq(10, p_scroller.middle(nil, 20, nil))
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eq(12, p_scroller.middle(nil, 25, nil))
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end)
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it('should handle ascending', function()
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eq(0, p_scroller.top('ascending', 20, 1000))
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eq(19, p_scroller.bottom('ascending', 20, 1000))
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eq(0, p_scroller.top('ascending', 20, 10))
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eq(9, p_scroller.bottom('ascending', 20, 10))
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end)
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it('should handle descending', function()
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eq(0, p_scroller.top('descending', 20, 1000))
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eq(19, p_scroller.bottom('descending', 20, 1000))
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eq(10, p_scroller.top('descending', 20, 10))
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eq(19, p_scroller.bottom('descending', 20, 10))
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end)
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end)
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end)
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