MultiReporter: Combine Several Mutation Reporters

In muttest: Mutation Testing

Combine Several Mutation Reporters

Description

Fans out every reporter event to a list of child reporters, so a single muttest() run can drive more than one reporter at once – for example a live ProgressMutationReporter alongside a JSONMutationReporter that writes a machine-readable artifact.

Super class

muttest::MutationReporter -> MultiReporter

Public fields

reporters

List of child reporters.

Methods

Public methods

• MultiReporter$new()

• MultiReporter$start_reporter()

• MultiReporter$start_file()

• MultiReporter$start_mutator()

• MultiReporter$add_result()

• MultiReporter$update()

• MultiReporter$end_mutator()

• MultiReporter$end_file()

• MultiReporter$end_reporter()

• MultiReporter$get_score()

• MultiReporter$print()

• MultiReporter$clone()

Inherited methods

• muttest::MutationReporter$cat_line()
• muttest::MutationReporter$rule()

---

Method new()

Initialize a combined reporter

Usage

MultiReporter$new(...)

Arguments

...

One or more MutationReporter objects.

---

Method start_reporter()

Start reporter

Usage

MultiReporter$start_reporter(plan = NULL)

Arguments

plan

The complete mutation plan

---

Method start_file()

Start testing a file

Usage

MultiReporter$start_file(filename)

Arguments

filename

Path to the file being mutated

---

Method start_mutator()

Start testing with a specific mutator

Usage

MultiReporter$start_mutator(mutator)

Arguments

mutator

The mutator being applied

---

Method add_result()

Add a mutation test result

Usage

MultiReporter$add_result(...)

Arguments

...

Arguments forwarded to each child's add_result().

---

Method update()

Update status

Usage

MultiReporter$update(force = FALSE)

Arguments

force

Passed to each child

---

Method end_mutator()

End testing with current mutator

Usage

MultiReporter$end_mutator()

---

Method end_file()

End testing current file

Usage

MultiReporter$end_file()

---

Method end_reporter()

End reporter

Usage

MultiReporter$end_reporter()

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Method get_score()

Get the score (from the first child)

Usage

MultiReporter$get_score()

---

Method print()

Print each child that supports printing

Usage

MultiReporter$print()

---

Method clone()

The objects of this class are cloneable with this method.

Usage

MultiReporter$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

See Also

Other MutationReporter: JSONMutationReporter, MutationReporter, ProgressMutationReporter, default_reporter()

muttest documentation built on July 21, 2026, 5:09 p.m.