Barrett Ruth
045a9044b5
Compares current buffer against any git revision (default HEAD), opens result with full diffs.nvim syntax highlighting. Follows fugitive convention: :Gdiff/:Gvdiff open vertical split, :Ghdiff opens horizontal split.
40 lines
1.3 KiB
Lua
40 lines
1.3 KiB
Lua
require('spec.helpers')
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describe('commands', function()
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describe('setup', function()
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it('registers Gdiff, Gvdiff, and Ghdiff commands', function()
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require('diffs.commands').setup()
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local commands = vim.api.nvim_get_commands({})
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assert.is_not_nil(commands.Gdiff)
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assert.is_not_nil(commands.Gvdiff)
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assert.is_not_nil(commands.Ghdiff)
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end)
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end)
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describe('unified diff generation', function()
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local old_lines = { 'local M = {}', 'return M' }
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local new_lines = { 'local M = {}', 'local x = 1', 'return M' }
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local diff_fn = vim.text and vim.text.diff or vim.diff
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it('generates valid unified diff', function()
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local old_content = table.concat(old_lines, '\n')
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local new_content = table.concat(new_lines, '\n')
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local diff_output = diff_fn(old_content, new_content, {
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result_type = 'unified',
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ctxlen = 3,
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})
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assert.is_not_nil(diff_output)
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assert.is_true(diff_output:find('@@ ') ~= nil)
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assert.is_true(diff_output:find('+local x = 1') ~= nil)
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end)
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it('returns empty for identical content', function()
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local content = table.concat(old_lines, '\n')
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local diff_output = diff_fn(content, content, {
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result_type = 'unified',
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ctxlen = 3,
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})
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assert.are.equal('', diff_output)
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end)
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end)
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end)
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