class SimpleCov::Configuration::CoverageCriterion


syntax is identical across line, branch, and method coverage.
always a plain percentage (‘minimum_per_file 100` is unambiguous) and the
threshold for the single criterion the block configures, so the value is
Receiver for a `coverage <criterion> do … end` block. Each verb writes a

def exact(percent)

Pin coverage to an exact figure (sets both `minimum` and `maximum`). 
def exact(percent)
  minimum(percent)
  maximum(percent)
end

def initialize(config, criterion) 

def initialize(config, criterion)
  @config = config
  @criterion = criterion
end

def maximum(percent)

`minimum` (or via `exact`) this pins coverage so an unexpected jump fails.
Overall maximum: fails the build if coverage rises above it. Paired with 
def maximum(percent)
  @config.send(:store_overall_threshold, :maximum_coverage, @criterion, percent)
end

def maximum_drop(percent)

Maximum allowed drop between runs (`maximum_drop 0` refuses any drop). 
def maximum_drop(percent)
  @config.send(:store_overall_threshold, :maximum_coverage_drop, @criterion, percent)
end

def minimum(percent)

Overall (suite-wide) minimum for this criterion. 
def minimum(percent)
  @config.send(:store_overall_threshold, :minimum_coverage, @criterion, percent)
end

def minimum_per_file(percent, only: nil)

for the matching files.
file; with `only:` (a String path or Regexp), overrides that default
Per-file minimum. With no `only:`, sets the default applied to every 
def minimum_per_file(percent, only: nil)
  @config.send(:store_minimum_per_file, @criterion, percent, only)
end

def minimum_per_group(percent, only:)

Per-group minimum for the named group (defined via `group`). 
def minimum_per_group(percent, only:)
  @config.send(:store_minimum_per_group, @criterion, percent, only)
end

def primary

Make this criterion the report's primary (leading) criterion. 
def primary
  # @criterion is Symbol-wide because this receiver is also built for
  # :eval; primary_coverage validates at runtime.
  @config.primary_coverage(_ = @criterion)
end