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47 lines
2.0 KiB
Nim
47 lines
2.0 KiB
Nim
## Drives the scalar-fast-path drop error end to end: compiles
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## `fixtures/scalar_skip_fixture.nim` (a CBOR-default library with a stray
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## all-scalar `abi = c` proc) with `-d:ffiGenBindings` and asserts genBindings()
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## fails loudly, and that `-d:ffiAllowScalarSkip` downgrades the drop to a clean
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## build. The positive path — the `abi = c` C header emitting a real scalar
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## binding — is covered by test_c_abi_codegen and the echo c_abi e2e.
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##
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## The fixture is compiled in a child `nim check` (search paths and compiler
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## captured at compile time) so its expected failure is observed as a test
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## assertion, not this file's own compile error.
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import std/[os, osproc, strutils, compilesettings]
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import unittest2
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const
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fixture = currentSourcePath().parentDir() / "fixtures" / "scalar_skip_fixture.nim"
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nimExe = getCurrentCompilerExe()
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ffiSearchPaths = querySettingSeq(searchPaths)
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proc genFixture(extraDefs: seq[string]): tuple[output: string, exitCode: int] =
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let outDir = getTempDir() / "ffi_scalar_skip_out"
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let cacheDir = getTempDir() / "ffi_scalar_skip_cache"
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createDir(outDir)
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var cmd = quoteShell(nimExe) & " check --hints:off --warnings:off"
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for p in ffiSearchPaths:
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cmd.add(" --path:" & quoteShell(p))
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cmd.add(" -d:ffiGenBindings -d:targetLang=c")
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cmd.add(" -d:ffiOutputDir=" & quoteShell(outDir))
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for d in extraDefs:
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cmd.add(" " & d)
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cmd.add(" --nimcache:" & quoteShell(cacheDir))
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cmd.add(" " & quoteShell(fixture))
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execCmdEx(cmd)
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suite "scalar-fast-path drop is loud under -d:ffiGenBindings":
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test "genBindings errors and names the dropped scalar proc":
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let (output, code) = genFixture(@[])
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check code != 0
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check output.contains("scalarskip_add")
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check output.contains("scalar-fast-path")
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check output.contains("-d:ffiAllowScalarSkip")
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test "-d:ffiAllowScalarSkip downgrades the drop to a clean build":
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let (output, code) = genFixture(@["-d:ffiAllowScalarSkip"])
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check code == 0
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check not output.contains("Error")
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