shard-ameba/spec/ameba/ast/branchable_spec.cr
V. Elenhaupt 6475c2bb25
Variable scope & useless assignments (#41)
* AST::Visitor -> AST::NodeVisitor

* Scope & ScopeVisitor

* Useless assignment rule

* Instance vars and useless assignments

* Multiple assigns one by one

* Support outer scope

* Variable used in the useless assignment

* Support OpAssign & MultiAssign

* Captured by block

* Variable, Assignment, Reference & Refactoring

* Variable has references, Assignment can be referenced

* Branch entity

* Handle useless assignments in branches

* Handle assignments in a loop

* Handle branch equality

* Handle special var `$?` assignment

* Improve captured by block stuff

* Avoid assignments in property definitions

(UselessAssign rule reports an warning)

* Support MacroIf and MacroFor branches

* Handle assignments with shadowed vars in inner scopes

* Add method arguments as scope variables

* Handle case if branch is blank

* Top level scope

* Handle case when branch is nop?
2018-05-03 18:57:47 +03:00

48 lines
1.3 KiB
Crystal

require "../../spec_helper"
module Ameba::AST
describe Branchable do
describe "#initialize" do
it "creates a new branchable" do
branchable = Branchable.new as_node %(a = 2 if true)
branchable.node.should_not be_nil
end
end
describe "delegation" do
it "delegates to_s to @node" do
node = as_node %(a = 2 if true)
branchable = Branchable.new node
branchable.to_s.should eq node.to_s
end
it "delegates location to @node" do
node = as_node %(a = 2 if true)
branchable = Branchable.new node
branchable.location.should eq node.location
end
end
describe "#loop?" do
it "returns true if it is a while loop" do
branchable = Branchable.new as_node %(while true; a = 2; end)
branchable.loop?.should be_true
end
it "returns true if it is the until loop" do
branchable = Branchable.new as_node %(until false; a = 2; end)
branchable.loop?.should be_true
end
it "returns true if it is loop" do
branchable = Branchable.new as_node %(loop {})
branchable.loop?.should be_true
end
it "returns false otherwise" do
branchable = Branchable.new as_node %(a = 2 if true)
branchable.loop?.should be_false
end
end
end
end