Package index

Core

Run mutation tests and define test plans.

muttest()

Run a mutation test

muttest_plan()

Create a plan for mutation testing

Mutators

Individual mutators — each defines one kind of code change.

Mutator

Mutator

operator()

Mutate a binary operator

boolean_literal()

Mutate a boolean literal

na_literal()

Mutate an NA or NULL literal

call_name()

Mutate a function call name

string_empty()

Mutate non-empty string literals to the empty string

string_fill()

Mutate the empty string literal to a placeholder string

numeric_increment()

Increment numeric literals

numeric_decrement()

Decrement numeric literals

index_increment()

Increment subscript indices

index_decrement()

Decrement subscript indices

negate_condition()

Negate the condition of if/while statements

remove_condition_negation()

Remove negation from the condition of if/while statements

remove_negation()

Remove logical negation

replace_return_value()

Replace the value in explicit return() calls

delete_statement()

Delete statements one at a time

Mutator presets

Ready-made collections of related mutators for common bug categories.

arithmetic_operators()

Arithmetic operator mutators

comparison_operators()

Comparison operator mutators

logical_operators()

Logical operator mutators

boolean_literals()

Boolean literal mutators

na_literals()

NA and NULL literal mutators

numeric_literals()

Numeric literal mutators

index_mutations()

Index mutation mutators

string_literals()

String literal mutators

condition_mutations()

Condition mutation mutators

Reporters

Control how results are displayed.

MutationReporter

Reporter for Mutation Testing

ProgressMutationReporter

Progress Reporter for Mutation Testing

default_reporter()

Create a default reporter

Strategies

Control how tests are run and source files are copied.

TestStrategy

TestStrategy interface

FileTestStrategy

Run tests matching the mutated source file name

FullTestStrategy

Run all tests for a mutant

CopyStrategy

CopyStrategy interface

PackageCopyStrategy

Package copy strategy

default_test_strategy()

Create a default run strategy

default_copy_strategy()

Create a default project copy strategy