How to use the mutmut.RelativeMutationID function in mutmut

def test_function():
    source = "def capitalize(s):\n    return s[0].upper() + s[1:] if s else s\n"
    assert mutate(Context(source=source, mutation_id=RelativeMutationID(source.split('\n')[1], 0, line_number=1))) == ("def capitalize(s):\n    return s[1].upper() + s[1:] if s else s\n", 1)
    assert mutate(Context(source=source, mutation_id=RelativeMutationID(source.split('\n')[1], 1, line_number=1))) == ("def capitalize(s):\n    return s[0].upper() - s[1:] if s else s\n", 1)
    assert mutate(Context(source=source, mutation_id=RelativeMutationID(source.split('\n')[1], 2, line_number=1))) == ("def capitalize(s):\n    return s[0].upper() + s[2:] if s else s\n", 1)

def test_function():
    source = "def capitalize(s):\n    return s[0].upper() + s[1:] if s else s\n"
    assert mutate(Context(source=source, mutation_id=RelativeMutationID(source.split('\n')[1], 0, line_number=1))) == ("def capitalize(s):\n    return s[1].upper() + s[1:] if s else s\n", 1)
    assert mutate(Context(source=source, mutation_id=RelativeMutationID(source.split('\n')[1], 1, line_number=1))) == ("def capitalize(s):\n    return s[0].upper() - s[1:] if s else s\n", 1)
    assert mutate(Context(source=source, mutation_id=RelativeMutationID(source.split('\n')[1], 2, line_number=1))) == ("def capitalize(s):\n    return s[0].upper() + s[2:] if s else s\n", 1)

def test_function_with_annotation():
    source = "def capitalize(s : str):\n    return s[0].upper() + s[1:] if s else s\n"
    assert mutate(Context(source=source, mutation_id=RelativeMutationID(source.split('\n')[1], 0, line_number=1))) == ("def capitalize(s : str):\n    return s[1].upper() + s[1:] if s else s\n", 1)

def test_bug_github_issue_162():
    source = """
primes: List[int] = []
foo = 'bar'
"""
    assert mutate(Context(source=source, mutation_id=RelativeMutationID("foo = 'bar'", 0, 2))) == (source.replace("'bar'", "'XXbarXX'"), 1)

def test_mutate_dict():
    source = "dict(a=b, c=d)"
    assert mutate(Context(source=source, mutation_id=RelativeMutationID(source, 1, line_number=0))) == ("dict(a=b, cXX=d)", 1)

def test_perform_one_indexed_mutation():
    assert mutate(Context(source='1+1', mutation_id=RelativeMutationID(line='1+1', index=0, line_number=0))) == ('2+1', 1)
    assert mutate(Context(source='1+1', mutation_id=RelativeMutationID('1+1', 1, line_number=0))) == ('1-1', 1)
    assert mutate(Context(source='1+1', mutation_id=RelativeMutationID('1+1', 2, line_number=0))) == ('1+2', 1)

def test_performed_mutation_ids():
    source = "dict(a=b, c=d)"
    context = Context(source=source)
    mutate(context)
    # we found two mutation points: mutate "a" and "c"
    assert context.performed_mutation_ids == [RelativeMutationID(source, 0, 0), RelativeMutationID(source, 1, 0)]

def test_perform_one_indexed_mutation():
    assert mutate(Context(source='1+1', mutation_id=RelativeMutationID(line='1+1', index=0, line_number=0))) == ('2+1', 1)
    assert mutate(Context(source='1+1', mutation_id=RelativeMutationID('1+1', 1, line_number=0))) == ('1-1', 1)
    assert mutate(Context(source='1+1', mutation_id=RelativeMutationID('1+1', 2, line_number=0))) == ('1+2', 1)

def mutation_id_from_pk(pk):
    mutant = Mutant.get(id=pk)
    return RelativeMutationID(line=mutant.line.line, index=mutant.index, line_number=mutant.line.line_number)