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import pathlib
import sys
from tests.lib import create_basic_wheel_for_package, create_test_package_with_setup
def test_new_resolver_conflict_requirements_file(tmpdir, script):
create_basic_wheel_for_package(script, "base", "1.0")
create_basic_wheel_for_package(script, "base", "2.0")
create_basic_wheel_for_package(
script, "pkga", "1.0", depends=["base==1.0"],
)
create_basic_wheel_for_package(
script, "pkgb", "1.0", depends=["base==2.0"],
)
req_file = tmpdir.joinpath("requirements.txt")
req_file.write_text("pkga\npkgb")
result = script.pip(
"install",
"--no-cache-dir", "--no-index",
"--find-links", script.scratch_path,
"-r", req_file,
expect_error=True,
)
message = "package versions have conflicting dependencies"
assert message in result.stderr, str(result)
def test_new_resolver_conflict_constraints_file(tmpdir, script):
create_basic_wheel_for_package(script, "pkg", "1.0")
constrats_file = tmpdir.joinpath("constraints.txt")
constrats_file.write_text("pkg!=1.0")
result = script.pip(
"install",
"--no-cache-dir", "--no-index",
"--find-links", script.scratch_path,
"-c", constrats_file,
"pkg==1.0",
expect_error=True,
)
assert "ResolutionImpossible" in result.stderr, str(result)
message = "The user requested (constraint) pkg!=1.0"
assert message in result.stdout, str(result)
def test_new_resolver_requires_python_error(script):
compatible_python = ">={0.major}.{0.minor}".format(sys.version_info)
incompatible_python = "<{0.major}.{0.minor}".format(sys.version_info)
pkga = create_test_package_with_setup(
script,
name="pkga",
version="1.0",
python_requires=compatible_python,
)
pkgb = create_test_package_with_setup(
script,
name="pkgb",
version="1.0",
python_requires=incompatible_python,
)
# This always fails because pkgb can never be satisfied.
result = script.pip("install", "--no-index", pkga, pkgb, expect_error=True)
# The error message should mention the Requires-Python: value causing the
# conflict, not the compatible one.
assert incompatible_python in result.stderr, str(result)
assert compatible_python not in result.stderr, str(result)
def test_new_resolver_checks_requires_python_before_dependencies(script):
incompatible_python = "<{0.major}.{0.minor}".format(sys.version_info)
pkg_dep = create_basic_wheel_for_package(
script,
name="pkg-dep",
version="1",
)
create_basic_wheel_for_package(
script,
name="pkg-root",
version="1",
# Refer the dependency by URL to prioritise it as much as possible,
# to test that Requires-Python is *still* inspected first.
depends=[f"pkg-dep@{pathlib.Path(pkg_dep).as_uri()}"],
requires_python=incompatible_python,
)
result = script.pip(
"install", "--no-cache-dir",
"--no-index", "--find-links", script.scratch_path,
"pkg-root",
expect_error=True,
)
# Resolution should fail because of pkg-a's Requires-Python.
# This check should be done before pkg-b, so pkg-b should never be pulled.
assert incompatible_python in result.stderr, str(result)
assert "pkg-b" not in result.stderr, str(result)
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