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Source Line Previewing #5

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Source Line Previewing #5

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7f02622
Add line previewing on failed cases
Sythivo Nov 29, 2024
03be754
Add line preview and change color
Sythivo Nov 29, 2024
b144d62
Add customizable peak preview range
Sythivo Nov 29, 2024
bcc6ed9
Simplify format
Sythivo Nov 29, 2024
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37 changes: 36 additions & 1 deletion src/reporters/lune_console_reporter.luau
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@
-- -- run tests

local stdio = require("@lune/stdio")
local fs = require("@lune/fs")
local types = require("../types")
local utils = require("../utils")
local inspect = require("../lib/inspect")
Expand All @@ -15,6 +16,8 @@ type TestError = types.TestError

local reporter = {}

reporter.line_preview_range = 3

local _state = {}
_state.indent = 0
_state.current_suite = nil :: types.Suite?
Expand All @@ -35,6 +38,10 @@ function color(c: stdio.Color, s: string)
return `{stdio.color(c)}{s}{stdio.color("reset")}`
end

function style(sty: stdio.Style, s: string)
return `{stdio.style(sty)}{s}{stdio.style("reset")}`
end

function print_test_info_once()
if _state.current_suite ~= nil and _state.suite_printed == false then
_state.suite_printed = true
Expand Down Expand Up @@ -113,9 +120,37 @@ function handle_complex_info(type: string, data: any): string?
return nil
end

function make_padded_line(line: number, longest: number): string
return `{line}{string.rep(" ", longest - #tostring(line))}`
end

function print_preview_dim_line(source_lines: {string}, line: number, longest: number)
if (source_lines[line] == nil) then
return
end
print_indent(style("dim", color("white", `{make_padded_line(line, longest)} | {source_lines[line]}`)))
end

function reporter.print_failure(type: "CHECK" | "REQUIRE", f: Failure)
print_test_info_once()
print_indent(`{color("red", `{type} FAILED:`)} {f.location.file}:{f.location.line}`)
local line = tonumber(f.location.line)
print_indent(`{color("red", `{type} FAILED:`)} {f.location.file}:{line}`)
if (line) then
local range = reporter.line_preview_range
local possible_lines = {}
for i = -range, range do
table.insert(possible_lines, #tostring(line + i))
end
local longest_line_len = math.max(unpack(possible_lines))
local source_lines = fs.readFile(f.location.file):split("\n")
for i = range, 1, -1 do
print_preview_dim_line(source_lines, line - i, longest_line_len)
end
print_indent(style("bold", color("blue", `{make_padded_line(line, longest_line_len)} | {source_lines[f.location.line]}`)))
for i = 1, range, 1 do
print_preview_dim_line(source_lines, line + i, longest_line_len)
end
end
print_indent(`{color("yellow", f.message)}`, 1)
if f.complex_info ~= nil then
local complex_msg = handle_complex_info(f.complex_info.type, f.complex_info.data)
Expand Down