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# Tester for nimsuggest.
# Every test file can have a #[!]# comment that is deleted from the input
# before 'nimsuggest' is invoked to ensure this token doesn't make a
# crucial difference for Nim's parser.
import os, osproc, strutils, streams, re
type
Test = object
cmd, dest: string
startup: seq[string]
script: seq[(string, string)]
const
curDir = when defined(windows): "" else: ""
DummyEof = "!EOF!"
template tpath(): untyped = getAppDir() / "tests"
proc parseTest(filename: string): Test =
const cursorMarker = "#[!]#"
let nimsug = curDir & addFileExt("nimsuggest", ExeExt)
result.dest = getTempDir() / extractFilename(filename)
result.cmd = nimsug & " --tester " & result.dest
result.script = @[]
result.startup = @[]
var tmp = open(result.dest, fmWrite)
var specSection = 0
var markers = newSeq[string]()
var i = 1
for x in lines(filename):
let marker = x.find(cursorMarker)+1
if marker > 0:
markers.add "\"" & filename & "\";\"" & result.dest & "\":" & $i & ":" & $marker
tmp.writeLine x.replace(cursorMarker, "")
else:
tmp.writeLine x
if x.contains("""""""""):
inc specSection
elif specSection == 1:
if x.startsWith("$nimsuggest"):
result.cmd = x % ["nimsuggest", nimsug, "file", filename]
elif x.startsWith("!"):
if result.cmd.len == 0:
result.startup.add x
else:
result.script.add((x, ""))
elif x.startsWith(">"):
# since 'markers' here are not complete yet, we do the $substitutions
# afterwards
result.script.add((x.substr(1).replaceWord("$path", tpath()), ""))
elif x.len > 0:
# expected output line:
let x = x % ["file", filename]
result.script[^1][1].add x.replace(";;", "\t") & '\L'
# else: ignore empty lines for better readability of the specs
inc i
tmp.close()
# now that we know the markers, substitute them:
for a in mitems(result.script):
a[0] = a[0] % markers
proc parseCmd(c: string): seq[string] =
# we don't support double quotes for now so that
# we can later support them properly with escapes and stuff.
result = @[]
var i = 0
var a = ""
while true:
setLen(a, 0)
# eat all delimiting whitespace
while c[i] in {' ', '\t', '\l', '\r'}: inc(i)
case c[i]
of '"': raise newException(ValueError, "double quotes not yet supported: " & c)
of '\'':
var delim = c[i]
inc(i) # skip ' or "
while c[i] != '\0' and c[i] != delim:
add a, c[i]
inc(i)
if c[i] != '\0': inc(i)
of '\0': break
else:
while c[i] > ' ':
add(a, c[i])
inc(i)
add(result, a)
proc edit(tmpfile: string; x: seq[string]) =
if x.len != 3 and x.len != 4:
quit "!edit takes two or three arguments"
let f = if x.len >= 4: tpath() / x[3] else: tmpfile
try:
let content = readFile(f)
let newcontent = content.replace(x[1], x[2])
if content == newcontent:
quit "wrong test case: edit had no effect"
writeFile(f, newcontent)
except IOError:
quit "cannot edit file " & tmpfile
proc exec(x: seq[string]) =
if x.len != 2: quit "!exec takes one argument"
if execShellCmd(x[1]) != 0:
quit "External program failed " & x[1]
proc copy(x: seq[string]) =
if x.len != 3: quit "!copy takes two arguments"
let rel = tpath()
copyFile(rel / x[1], rel / x[2])
proc del(x: seq[string]) =
if x.len != 2: quit "!del takes one argument"
removeFile(tpath() / x[1])
proc runCmd(cmd, dest: string): bool =
result = cmd[0] == '!'
if not result: return
let x = cmd.parseCmd()
case x[0]
of "!edit":
edit(dest, x)
of "!exec":
exec(x)
of "!copy":
copy(x)
of "!del":
del(x)
else:
quit "unkown command: " & cmd
proc smartCompare(pattern, x: string): bool =
if pattern.contains('*'):
result = match(x, re(escapeRe(pattern).replace("\\x2A","(.*)"), {}))
proc runTest(filename: string): int =
let s = parseTest filename
for cmd in s.startup:
if not runCmd(cmd, s.dest):
quit "invalid command: " & cmd
let cl = parseCmdLine(s.cmd)
var p = startProcess(command=cl[0], args=cl[1 .. ^1],
options={poStdErrToStdOut, poUsePath,
poInteractive, poDemon})
let outp = p.outputStream
let inp = p.inputStream
var report = ""
var a = newStringOfCap(120)
try:
# read and ignore anything nimsuggest says at startup:
while outp.readLine(a):
if a == DummyEof: break
for req, resp in items(s.script):
if not runCmd(req, s.dest):
inp.writeLine(req)
inp.flush()
var answer = ""
while outp.readLine(a):
if a == DummyEof: break
answer.add a
answer.add '\L'
if resp != answer and not smartCompare(resp, answer):
report.add "\nTest failed: " & filename
var hasDiff = false
for i in 0..min(resp.len-1, answer.len-1):
if resp[i] != answer[i]:
report.add "\n Expected: " & resp.substr(i)
report.add "\n But got: " & answer.substr(i)
hasDiff = true
break
if not hasDiff:
report.add "\n Expected: " & resp
report.add "\n But got: " & answer
finally:
inp.writeLine("quit")
inp.flush()
close(p)
if report.len > 0:
echo report
result = report.len
proc main() =
var failures = 0
for x in walkFiles(getAppDir() / "tests/t*.nim"):
echo "Test ", x
failures += runTest(expandFilename(x))
if failures > 0:
quit 1
main()
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