hunk.lua

-- TODO:         show current hunk in status line
-- TODO:         incorporate more patchutils functionality

-- FIXME https://www.reddit.com/r/neovim/comments/unwvkw/github_hkuptyrunesnvim_lua_test_framework_for/
-- FIXME https://github.com/hkupty/runes.nvim

pretty = require("pl.pretty")

local M = {}

-- Header object
M.Header = {}


function M.Header:parse(inline)
    local result = {}
    local pat = "@@%s+%-(%d+),(%d+)%s+%+(%d+),(%d+)%s+@@%s*(.*)"
    res = inline:match(pat)
    print("res:\n" .. pretty.dump(res))
    
    return {
        res = res,
        line = inline,
        oldFirst = res[1],
        oldCount = res[2],
        newFirst = res[3],
        newCount = res[4],
        remainderLine = res[5]
    }
end

return M

hunk_spec.lua

pretty = require("pl.pretty")

describe("Parsing of a hunk header", function()
    local hk, header

    setup(function()
        hk = require("hunk")
        test_header = "@@ -20,8 +20,17 @@ Hunk #1, a/tests/test_ec_curves.py"
    end)

    before_each(function()
        header = hk.Header:parse(test_header)
    end)
    
    it("it is not nil", function()
        assert.is_not_nil(header)
    end)

    it("original line is preserved in the attribute line", function()
        assert.are.equal(header.line, test_header)
    end)

    it("attributes are set correctly", function()
        assert.are.equal(20, header.oldFirst)
        assert.are.equal(8, header.oldCount)
        assert.are.equal(20, header.newFirst)
        assert.are.equal(17, header.newCount)
    end)
    
    it("remainder of the line is preserved as well", function()
        assert.are.equal("Hunk #1, a/tests/test_ec_curves.py", header.remainderLine)
    end)
end)

output

stitny~/.l/s/n/s/p/p/s/v/ftplugin (lua *)$ busted -o plainTerminal --verbose hunk_spec.lua
"20"
"20"
"20"
"20"

0 successes / 0 failures / 4 errors / 0 pending : 0.008232 seconds

Error -> hunk_spec.lua @ 11
Parsing of a hunk header before_each
./hunk.lua:19: attempt to concatenate a boolean value

stack traceback:
	./hunk.lua:19: in method 'parse'
	hunk_spec.lua:12: in function <hunk_spec.lua:11>


Error -> hunk_spec.lua @ 11
Parsing of a hunk header before_each
./hunk.lua:19: attempt to concatenate a boolean value

stack traceback:
	./hunk.lua:19: in method 'parse'
	hunk_spec.lua:12: in function <hunk_spec.lua:11>


Error -> hunk_spec.lua @ 11
Parsing of a hunk header before_each
./hunk.lua:19: attempt to concatenate a boolean value

stack traceback:
	./hunk.lua:19: in method 'parse'
	hunk_spec.lua:12: in function <hunk_spec.lua:11>


Error -> hunk_spec.lua @ 11
Parsing of a hunk header before_each
./hunk.lua:19: attempt to concatenate a boolean value

stack traceback:
	./hunk.lua:19: in method 'parse'
	hunk_spec.lua:12: in function <hunk_spec.lua:11>

stitny~/.l/s/n/s/p/p/s/v/ftplugin (lua *)$