def test_package_with_the_same_name_gives_clear_error_message(
root: "ProjectPackage", provider: "Provider", repo: "Repository"):
pkg_name = "a"
root.add_dependency(Factory.create_dependency(pkg_name, "*"))
add_to_repo(repo, pkg_name, "1.0.0", deps={pkg_name: "1.0.0"})
error = f"Package '{pkg_name}' is listed as a dependency of itself."
check_solver_result(root, provider, error=error)
def test_traverse_into_package_with_fewer_versions_first(
root: "ProjectPackage", provider: "Provider", repo: "Repository"):
# Dependencies are ordered so that packages with fewer versions are tried
# first. Here, there are two valid solutions (either a or b must be
# downgraded once). The chosen one depends on which dep is traversed first.
# Since b has fewer versions, it will be traversed first, which means a will
# come later. Since later selections are revised first, a gets downgraded.
root.add_dependency(Factory.create_dependency("a", "*"))
root.add_dependency(Factory.create_dependency("b", "*"))
add_to_repo(repo, "a", "1.0.0", deps={"c": "*"})
add_to_repo(repo, "a", "2.0.0", deps={"c": "*"})
add_to_repo(repo, "a", "3.0.0", deps={"c": "*"})
add_to_repo(repo, "a", "4.0.0", deps={"c": "*"})
add_to_repo(repo, "a", "5.0.0", deps={"c": "1.0.0"})
add_to_repo(repo, "b", "1.0.0", deps={"c": "*"})
add_to_repo(repo, "b", "2.0.0", deps={"c": "*"})
add_to_repo(repo, "b", "3.0.0", deps={"c": "*"})
add_to_repo(repo, "b", "4.0.0", deps={"c": "2.0.0"})
add_to_repo(repo, "c", "1.0.0")
add_to_repo(repo, "c", "2.0.0")
check_solver_result(root, provider, {
"a": "4.0.0",
"b": "4.0.0",
"c": "2.0.0"
})
def test_simple_dependencies(
root: "ProjectPackage", provider: "Provider", repo: "Repository"
):
root.add_dependency(Factory.create_dependency("a", "1.0.0"))
root.add_dependency(Factory.create_dependency("b", "1.0.0"))
add_to_repo(repo, "a", "1.0.0", deps={"aa": "1.0.0", "ab": "1.0.0"})
add_to_repo(repo, "b", "1.0.0", deps={"ba": "1.0.0", "bb": "1.0.0"})
add_to_repo(repo, "aa", "1.0.0")
add_to_repo(repo, "ab", "1.0.0")
add_to_repo(repo, "ba", "1.0.0")
add_to_repo(repo, "bb", "1.0.0")
check_solver_result(
root,
provider,
{
"a": "1.0.0",
"aa": "1.0.0",
"ab": "1.0.0",
"b": "1.0.0",
"ba": "1.0.0",
"bb": "1.0.0",
},
)
def test_with_compatible_locked_dependencies_use_latest(
root: "ProjectPackage", provider: "Provider", repo: "Repository"):
root.add_dependency(Factory.create_dependency("foo", "*"))
root.add_dependency(Factory.create_dependency("baz", "*"))
add_to_repo(repo, "foo", "1.0.0", deps={"bar": "1.0.0"})
add_to_repo(repo, "foo", "1.0.1", deps={"bar": "1.0.1"})
add_to_repo(repo, "foo", "1.0.2", deps={"bar": "1.0.2"})
add_to_repo(repo, "bar", "1.0.0")
add_to_repo(repo, "bar", "1.0.1")
add_to_repo(repo, "bar", "1.0.2")
add_to_repo(repo, "baz", "1.0.0")
add_to_repo(repo, "baz", "1.0.1")
check_solver_result(
root,
provider,
result={
"foo": "1.0.2",
"bar": "1.0.2",
"baz": "1.0.0"
},
locked={
"foo": get_package("foo", "1.0.1"),
"bar": get_package("bar", "1.0.1"),
"baz": get_package("baz", "1.0.0"),
},
use_latest=["foo"],
)
def test_unlocks_dependencies_if_necessary_to_ensure_that_a_new_dependency_is_statisfied(
root: "ProjectPackage", provider: "Provider", repo: "Repository"):
root.add_dependency(Factory.create_dependency("foo", "*"))
root.add_dependency(Factory.create_dependency("newdep", "2.0.0"))
add_to_repo(repo, "foo", "1.0.0", deps={"bar": "<2.0.0"})
add_to_repo(repo, "bar", "1.0.0", deps={"baz": "<2.0.0"})
add_to_repo(repo, "baz", "1.0.0", deps={"qux": "<2.0.0"})
add_to_repo(repo, "qux", "1.0.0")
add_to_repo(repo, "foo", "2.0.0", deps={"bar": "<3.0.0"})
add_to_repo(repo, "bar", "2.0.0", deps={"baz": "<3.0.0"})
add_to_repo(repo, "baz", "2.0.0", deps={"qux": "<3.0.0"})
add_to_repo(repo, "qux", "2.0.0")
add_to_repo(repo, "newdep", "2.0.0", deps={"baz": ">=1.5.0"})
check_solver_result(
root,
provider,
result={
"foo": "2.0.0",
"bar": "2.0.0",
"baz": "2.0.0",
"qux": "1.0.0",
"newdep": "2.0.0",
},
locked={
"foo": get_package("foo", "2.0.0"),
"bar": get_package("bar", "1.0.0"),
"baz": get_package("baz", "1.0.0"),
"qux": get_package("qux", "1.0.0"),
},
)
def test_with_compatible_locked_dependencies_with_extras(
root: ProjectPackage, provider: Provider, repo: Repository
):
root.add_dependency(Factory.create_dependency("foo", "^1.0"))
package_foo_0 = get_package("foo", "1.0.0")
package_foo_1 = get_package("foo", "1.0.1")
bar_extra_dep = Factory.create_dependency(
"bar", {"version": "^1.0", "extras": "extra"}
)
for package_foo in (package_foo_0, package_foo_1):
package_foo.add_dependency(bar_extra_dep)
repo.add_package(package_foo)
bar_deps = {"baz": {"version": "^1.0", "extras": ["extra"]}}
add_to_repo(repo, "bar", "1.0.0", bar_deps)
add_to_repo(repo, "bar", "1.0.1", bar_deps)
add_to_repo(repo, "baz", "1.0.0")
add_to_repo(repo, "baz", "1.0.1")
check_solver_result(
root,
provider,
result={"foo": "1.0.0", "bar": "1.0.0", "baz": "1.0.0"},
locked={
"foo": get_package("foo", "1.0.0"),
"bar": get_package("bar", "1.0.0"),
"baz": get_package("baz", "1.0.0"),
},
)
def test_circular_dependency(root: ProjectPackage, provider: Provider,
repo: Repository):
root.add_dependency(Factory.create_dependency("foo", "1.0.0"))
add_to_repo(repo, "foo", "1.0.0", deps={"bar": "1.0.0"})
add_to_repo(repo, "bar", "1.0.0", deps={"foo": "1.0.0"})
check_solver_result(root, provider, {"foo": "1.0.0", "bar": "1.0.0"})
def test_circular_dependency_on_older_version(root: "ProjectPackage",
provider: "Provider",
repo: "Repository"):
root.add_dependency(Factory.create_dependency("a", ">=1.0.0"))
add_to_repo(repo, "a", "1.0.0")
add_to_repo(repo, "a", "2.0.0", deps={"b": "1.0.0"})
add_to_repo(repo, "b", "1.0.0", deps={"a": "1.0.0"})
check_solver_result(root, provider, {"a": "1.0.0"}, tries=2)
def test_disjoint_root_constraints(root: "ProjectPackage",
provider: "Provider", repo: "Repository"):
root.add_dependency(Factory.create_dependency("foo", "1.0.0"))
root.add_dependency(Factory.create_dependency("foo", "2.0.0"))
add_to_repo(repo, "foo", "1.0.0")
add_to_repo(repo, "foo", "2.0.0")
error = """\
Because myapp depends on both foo (1.0.0) and foo (2.0.0), version solving failed."""
check_solver_result(root, provider, error=error)
def test_no_version_matching_constraint(root: ProjectPackage,
provider: Provider, repo: Repository):
root.add_dependency(Factory.create_dependency("foo", "^1.0"))
add_to_repo(repo, "foo", "2.0.0")
add_to_repo(repo, "foo", "2.1.3")
check_solver_result(
root,
provider,
error=("Because myapp depends on foo (^1.0) "
"which doesn't match any versions, version solving failed."),
)
def test_dependency_does_not_match_root_python_constraint(
root: "ProjectPackage", provider: "Provider", repo: "Repository"):
provider.set_package_python_versions("^3.6")
root.add_dependency(Factory.create_dependency("foo", "*"))
add_to_repo(repo, "foo", "1.0.0", python="<3.5")
error = """The current project's Python requirement (>=3.6,<4.0) is not compatible with some of the required packages Python requirement:
- foo requires Python <3.5, so it will not be satisfied for Python >=3.6,<4.0
Because no versions of foo match !=1.0.0
and foo (1.0.0) requires Python <3.5, foo is forbidden.
So, because myapp depends on foo (*), version solving failed."""
check_solver_result(root, provider, error=error)
def test_shared_dependencies_with_overlapping_constraints(
root: "ProjectPackage", provider: "Provider", repo: "Repository"
):
root.add_dependency(Factory.create_dependency("a", "1.0.0"))
root.add_dependency(Factory.create_dependency("b", "1.0.0"))
add_to_repo(repo, "a", "1.0.0", deps={"shared": ">=2.0.0 <4.0.0"})
add_to_repo(repo, "b", "1.0.0", deps={"shared": ">=3.0.0 <5.0.0"})
add_to_repo(repo, "shared", "2.0.0")
add_to_repo(repo, "shared", "3.0.0")
add_to_repo(repo, "shared", "3.6.9")
add_to_repo(repo, "shared", "4.0.0")
add_to_repo(repo, "shared", "5.0.0")
check_solver_result(root, provider, {"a": "1.0.0", "b": "1.0.0", "shared": "3.6.9"})
def test_rolls_back_leaf_versions_first(
root: ProjectPackage, provider: Provider, repo: Repository
):
# The latest versions of a and b disagree on c. An older version of either
# will resolve the problem. This test validates that b, which is farther
# in the dependency graph from myapp is downgraded first.
root.add_dependency(Factory.create_dependency("a", "*"))
add_to_repo(repo, "a", "1.0.0", deps={"b": "*"})
add_to_repo(repo, "a", "2.0.0", deps={"b": "*", "c": "2.0.0"})
add_to_repo(repo, "b", "1.0.0")
add_to_repo(repo, "b", "2.0.0", deps={"c": "1.0.0"})
add_to_repo(repo, "c", "1.0.0")
add_to_repo(repo, "c", "2.0.0")
check_solver_result(root, provider, {"a": "2.0.0", "b": "1.0.0", "c": "2.0.0"})
def test_backjump_past_failed_package_on_disjoint_constraint(
root: "ProjectPackage", provider: "Provider", repo: "Repository"):
root.add_dependency(Factory.create_dependency("a", "*"))
root.add_dependency(Factory.create_dependency("foo", ">2.0.0"))
add_to_repo(repo, "a", "1.0.0", deps={"foo": "*"}) # ok
add_to_repo(repo, "a", "2.0.0",
deps={"foo":
"<1.0.0"}) # disjoint with myapp's constraint on foo
add_to_repo(repo, "foo", "2.0.0")
add_to_repo(repo, "foo", "2.0.1")
add_to_repo(repo, "foo", "2.0.2")
add_to_repo(repo, "foo", "2.0.3")
add_to_repo(repo, "foo", "2.0.4")
check_solver_result(root, provider, {"a": "1.0.0", "foo": "2.0.4"})
def test_diamond_dependency_graph(
root: ProjectPackage, provider: Provider, repo: Repository
):
root.add_dependency(Factory.create_dependency("a", "*"))
root.add_dependency(Factory.create_dependency("b", "*"))
add_to_repo(repo, "a", "2.0.0", deps={"c": "^1.0.0"})
add_to_repo(repo, "a", "1.0.0")
add_to_repo(repo, "b", "2.0.0", deps={"c": "^3.0.0"})
add_to_repo(repo, "b", "1.0.0", deps={"c": "^2.0.0"})
add_to_repo(repo, "c", "3.0.0")
add_to_repo(repo, "c", "2.0.0")
add_to_repo(repo, "c", "1.0.0")
check_solver_result(root, provider, {"a": "1.0.0", "b": "2.0.0", "c": "3.0.0"})
def test_disjoint_constraints(root: "ProjectPackage", provider: "Provider",
repo: "Repository"):
root.add_dependency(Factory.create_dependency("foo", "1.0.0"))
root.add_dependency(Factory.create_dependency("bar", "1.0.0"))
add_to_repo(repo, "foo", "1.0.0", deps={"shared": "<=2.0.0"})
add_to_repo(repo, "bar", "1.0.0", deps={"shared": ">3.0.0"})
add_to_repo(repo, "shared", "2.0.0")
add_to_repo(repo, "shared", "4.0.0")
error = """\
Because bar (1.0.0) depends on shared (>3.0.0)
and foo (1.0.0) depends on shared (<=2.0.0), bar (1.0.0) is incompatible with foo (1.0.0).
So, because myapp depends on both foo (1.0.0) and bar (1.0.0), version solving failed."""
check_solver_result(root, provider, error=error)
check_solver_result(root, provider, error=error)
def test_no_version_that_matches_combined_constraints(root: "ProjectPackage",
provider: "Provider",
repo: "Repository"):
root.add_dependency(Factory.create_dependency("foo", "1.0.0"))
root.add_dependency(Factory.create_dependency("bar", "1.0.0"))
add_to_repo(repo, "foo", "1.0.0", deps={"shared": ">=2.0.0 <3.0.0"})
add_to_repo(repo, "bar", "1.0.0", deps={"shared": ">=2.9.0 <4.0.0"})
add_to_repo(repo, "shared", "2.5.0")
add_to_repo(repo, "shared", "3.5.0")
error = """\
Because foo (1.0.0) depends on shared (>=2.0.0 <3.0.0)
and no versions of shared match >=2.9.0,<3.0.0, foo (1.0.0) requires shared (>=2.0.0,<2.9.0).
And because bar (1.0.0) depends on shared (>=2.9.0 <4.0.0), bar (1.0.0) is incompatible with foo (1.0.0).
So, because myapp depends on both foo (1.0.0) and bar (1.0.0), version solving failed."""
check_solver_result(root, provider, error=error)
def test_simple_transitive(root: ProjectPackage, provider: Provider, repo: Repository):
# Only one version of baz, so foo and bar will have to downgrade
# until they reach it
root.add_dependency(Factory.create_dependency("foo", "*"))
add_to_repo(repo, "foo", "1.0.0", deps={"bar": "1.0.0"})
add_to_repo(repo, "foo", "2.0.0", deps={"bar": "2.0.0"})
add_to_repo(repo, "foo", "3.0.0", deps={"bar": "3.0.0"})
add_to_repo(repo, "bar", "1.0.0", deps={"baz": "*"})
add_to_repo(repo, "bar", "2.0.0", deps={"baz": "2.0.0"})
add_to_repo(repo, "bar", "3.0.0", deps={"baz": "3.0.0"})
add_to_repo(repo, "baz", "1.0.0")
check_solver_result(
root, provider, {"foo": "1.0.0", "bar": "1.0.0", "baz": "1.0.0"}, tries=3
)
def test_shared_dependency_where_dependent_version_affects_other_dependencies(
root: "ProjectPackage", provider: "Provider", repo: "Repository"
):
root.add_dependency(Factory.create_dependency("foo", "<=1.0.2"))
root.add_dependency(Factory.create_dependency("bar", "1.0.0"))
add_to_repo(repo, "foo", "1.0.0")
add_to_repo(repo, "foo", "1.0.1", deps={"bang": "1.0.0"})
add_to_repo(repo, "foo", "1.0.2", deps={"whoop": "1.0.0"})
add_to_repo(repo, "foo", "1.0.3", deps={"zoop": "1.0.0"})
add_to_repo(repo, "bar", "1.0.0", deps={"foo": "<=1.0.1"})
add_to_repo(repo, "bang", "1.0.0")
add_to_repo(repo, "whoop", "1.0.0")
add_to_repo(repo, "zoop", "1.0.0")
check_solver_result(
root, provider, {"foo": "1.0.1", "bar": "1.0.0", "bang": "1.0.0"}
)
def test_with_incompatible_locked_dependencies(
root: ProjectPackage, provider: Provider, repo: Repository
):
root.add_dependency(Factory.create_dependency("foo", ">1.0.1"))
add_to_repo(repo, "foo", "1.0.0", deps={"bar": "1.0.0"})
add_to_repo(repo, "foo", "1.0.1", deps={"bar": "1.0.1"})
add_to_repo(repo, "foo", "1.0.2", deps={"bar": "1.0.2"})
add_to_repo(repo, "bar", "1.0.0")
add_to_repo(repo, "bar", "1.0.1")
add_to_repo(repo, "bar", "1.0.2")
check_solver_result(
root,
provider,
result={"foo": "1.0.2", "bar": "1.0.2"},
locked={"foo": get_package("foo", "1.0.1"), "bar": get_package("bar", "1.0.1")},
)
def test_disjoint_root_constraints_path_dependencies(root: ProjectPackage,
provider: Provider,
repo: Repository):
provider.set_package_python_versions("^3.7")
fixtures = Path(__file__).parent.parent.parent / "fixtures"
project_dir = fixtures.joinpath("with_conditional_path_deps")
dependency1 = Factory.create_dependency("demo",
{"path": project_dir / "demo_one"})
root.add_dependency(dependency1)
dependency2 = Factory.create_dependency("demo",
{"path": project_dir / "demo_two"})
root.add_dependency(dependency2)
error = (
f"Because myapp depends on both {str(dependency1).replace('*', '1.2.3')} "
f"and {str(dependency2).replace('*', '1.2.3')}, version solving failed."
)
check_solver_result(root, provider, error=error)
def test_no_valid_solution(root: "ProjectPackage", provider: "Provider",
repo: "Repository"):
root.add_dependency(Factory.create_dependency("a", "*"))
root.add_dependency(Factory.create_dependency("b", "*"))
add_to_repo(repo, "a", "1.0.0", deps={"b": "1.0.0"})
add_to_repo(repo, "a", "2.0.0", deps={"b": "2.0.0"})
add_to_repo(repo, "b", "1.0.0", deps={"a": "2.0.0"})
add_to_repo(repo, "b", "2.0.0", deps={"a": "1.0.0"})
error = """\
Because no versions of b match <1.0.0 || >1.0.0,<2.0.0 || >2.0.0
and b (1.0.0) depends on a (2.0.0), b (!=2.0.0) requires a (2.0.0).
And because a (2.0.0) depends on b (2.0.0), b is forbidden.
Because b (2.0.0) depends on a (1.0.0) which depends on b (1.0.0), b is forbidden.
Thus, b is forbidden.
So, because myapp depends on b (*), version solving failed."""
check_solver_result(root, provider, error=error, tries=2)
def test_backjump_to_nearer_unsatisfied_package(
root: ProjectPackage, provider: Provider, repo: Repository
):
# This ensures it doesn't exhaustively search all versions of b when it's
# a-2.0.0 whose dependency on c-2.0.0-nonexistent led to the problem. We
# make sure b has more versions than a so that the solver tries a first
# since it sorts sibling dependencies by number of versions.
root.add_dependency(Factory.create_dependency("a", "*"))
root.add_dependency(Factory.create_dependency("b", "*"))
add_to_repo(repo, "a", "1.0.0", deps={"c": "1.0.0"})
add_to_repo(repo, "a", "2.0.0", deps={"c": "2.0.0-1"})
add_to_repo(repo, "b", "1.0.0")
add_to_repo(repo, "b", "2.0.0")
add_to_repo(repo, "b", "3.0.0")
add_to_repo(repo, "c", "1.0.0")
check_solver_result(
root, provider, {"a": "1.0.0", "b": "3.0.0", "c": "1.0.0"}, tries=2
)
def test_backjumps_after_partial_satisfier(root: "ProjectPackage",
provider: "Provider",
repo: "Repository"):
# c 2.0.0 is incompatible with y 2.0.0 because it requires x 1.0.0, but that
# requirement only exists because of both a and b. The solver should be able
# to deduce c 2.0.0's incompatibility and select c 1.0.0 instead.
root.add_dependency(Factory.create_dependency("c", "*"))
root.add_dependency(Factory.create_dependency("y", "^2.0.0"))
add_to_repo(repo, "a", "1.0.0", deps={"x": ">=1.0.0"})
add_to_repo(repo, "b", "1.0.0", deps={"x": "<2.0.0"})
add_to_repo(repo, "c", "1.0.0")
add_to_repo(repo, "c", "2.0.0", deps={"a": "*", "b": "*"})
add_to_repo(repo, "x", "0.0.0")
add_to_repo(repo, "x", "1.0.0", deps={"y": "1.0.0"})
add_to_repo(repo, "x", "2.0.0")
add_to_repo(repo, "y", "1.0.0")
add_to_repo(repo, "y", "2.0.0")
check_solver_result(root, provider, {"c": "1.0.0", "y": "2.0.0"}, tries=2)
