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Use proper exception subclass for invalid constraints error #124

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Sep 12, 2023
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Use proper exception subclass for invalid constraints error #124

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9 changes: 8 additions & 1 deletion src/univers/version_constraint.py
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Original file line number Diff line number Diff line change
Expand Up @@ -471,6 +471,10 @@ def simplify_constraints(constraints):
return sorted(set(unequal_constraints + constraints))


class InvalidConstraintsError(Exception):
pass


def contains_version(version, constraints):
"""
Return True an assertion error if the ``constraints`` list contains the
Expand Down Expand Up @@ -539,7 +543,10 @@ def contains_version(version, constraints):

else:
# this should never happen as the constraints must be valid going in
raise Exception(f"Invalid constraints sequence: {constraints }")
raise InvalidConstraintsError(
f"Invalid constraints sequence: ('{cur_comp} {cur_constraint.version}',"
f"'{nxt_comp} {nxt_constraint.version}') in {constraints!r}"
)

# If this is the last iteration and next comparator is ">" or >="
# and the "tested version" is greater than the next version
Expand Down