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