shard-ameba/spec/ameba/ast/variabling/assignment_spec.cr

89 lines
2.7 KiB
Crystal

require "../../../spec_helper"
module Ameba::AST
describe Assignment do
node = Crystal::NilLiteral.new
scope = Scope.new as_node "foo = 1"
variable = Variable.new(Crystal::Var.new("foo"), scope)
describe "#initialize" do
it "creates a new assignment with node and var" do
assignment = Assignment.new(node, variable, scope)
assignment.node.should_not be_nil
end
end
describe "#reference=" do
it "creates a new reference" do
assignment = Assignment.new(node, variable, scope)
assignment.referenced = true
assignment.referenced?.should be_true
end
end
describe "delegation" do
it "delegates locations" do
assignment = Assignment.new(node, variable, scope)
assignment.location.should eq node.location
assignment.end_location.should eq node.end_location
end
it "delegates to_s" do
assignment = Assignment.new(node, variable, scope)
assignment.to_s.should eq node.to_s
end
it "delegates scope" do
assignment = Assignment.new(node, variable, scope)
assignment.scope.should eq variable.scope
end
end
describe "#branch" do
it "returns the branch of the assignment" do
nodes = as_nodes <<-CRYSTAL
def method(a)
if a
a = 3 # --> Crystal::Expressions
puts a
end
end
CRYSTAL
scope = Scope.new nodes.def_nodes.first
variable = Variable.new(nodes.var_nodes.first, scope)
assignment = Assignment.new(nodes.assign_nodes.first, variable, scope)
branch = assignment.branch.should_not be_nil
branch.node.class.should eq Crystal::Expressions
end
it "returns inner branch" do
nodes = as_nodes <<-CRYSTAL
def method(a, b)
if a
if b
a = 3 # --> Crystal::Assign
end
end
end
CRYSTAL
scope = Scope.new nodes.def_nodes.first
variable = Variable.new(nodes.var_nodes.first, scope)
assignment = Assignment.new(nodes.assign_nodes.first, variable, scope)
branch = assignment.branch.should_not be_nil
branch.node.class.should eq Crystal::Assign
end
it "returns nil if assignment does not have a branch" do
nodes = as_nodes <<-CRYSTAL
def method(a)
a = 2
end
CRYSTAL
scope = Scope.new nodes.def_nodes.first
variable = Variable.new(nodes.var_nodes.first, scope)
assignment = Assignment.new(nodes.assign_nodes.first, variable, scope)
assignment.branch.should be_nil
end
end
end
end