ManageIQ/manageiq-ui-classic

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app/helpers/chargeback_rate_helper.rb

Summary

Maintainability
B
4 hrs
Test Coverage
F
15%

Method ranges_and_rates has a Cognitive Complexity of 15 (exceeds 5 allowed). Consider refactoring.
Open

  def ranges_and_rates(num_tiers, tiers, detail, first_tier)
    range_rate = {
      :start => [first_tier.start ? first_tier.start : 0],
      :finish => [first_tier.finish == Float::INFINITY ? _('Infinity') : first_tier.finish],
      :fixed_rate => [first_tier.fixed_rate ? first_tier.fixed_rate : 0.0],
Severity: Minor
Found in app/helpers/chargeback_rate_helper.rb - About 1 hr to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method rate_summary has a Cognitive Complexity of 12 (exceeds 5 allowed). Consider refactoring.
Open

  def rate_summary(data, optional)
    rows = []
    data.to_a.sort_by { |rd| [rd.chargeable_field[:group].downcase, rd.chargeable_field[:description].downcase, rd[:sub_metric].to_s.downcase] }.each_with_index do |detail, detail_index|
      cells = []
      tiers = detail.chargeback_tiers.order(:start)
Severity: Minor
Found in app/helpers/chargeback_rate_helper.rb - About 1 hr to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method rate_summary has 28 lines of code (exceeds 25 allowed). Consider refactoring.
Open

  def rate_summary(data, optional)
    rows = []
    data.to_a.sort_by { |rd| [rd.chargeable_field[:group].downcase, rd.chargeable_field[:description].downcase, rd[:sub_metric].to_s.downcase] }.each_with_index do |detail, detail_index|
      cells = []
      tiers = detail.chargeback_tiers.order(:start)
Severity: Minor
Found in app/helpers/chargeback_rate_helper.rb - About 1 hr to fix

Useless assignment to variable - data.
Open

    data = []

Checks for every useless assignment to local variable in every scope. The basic idea for this cop was from the warning of ruby -cw:

assigned but unused variable - foo

Currently this cop has advanced logic that detects unreferenced reassignments and properly handles varied cases such as branch, loop, rescue, ensure, etc.

NOTE: Given the assignment foo = 1, bar = 2, removing unused variables can lead to a syntax error, so this case is not autocorrected.

Safety:

This cop's autocorrection is unsafe because removing assignment from operator assignment can cause NameError if this assignment has been used to declare local variable. For example, replacing a ||= 1 to a || 1 may cause "undefined local variable or method `a' for main:Object (NameError)".

Example:

# bad

def some_method
  some_var = 1
  do_something
end

Example:

# good

def some_method
  some_var = 1
  do_something(some_var)
end

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