require "../../spec_helper" require "semantic_version" module Ameba::AST struct Test include Util end subject = Test.new describe Util do describe "#literal?" do [ Crystal::ArrayLiteral.new, Crystal::BoolLiteral.new(false), Crystal::CharLiteral.new('a'), Crystal::HashLiteral.new, Crystal::NamedTupleLiteral.new, Crystal::NilLiteral.new, Crystal::NumberLiteral.new(42), Crystal::RegexLiteral.new(Crystal::StringLiteral.new("")), Crystal::StringLiteral.new(""), Crystal::SymbolLiteral.new(""), Crystal::TupleLiteral.new([] of Crystal::ASTNode), Crystal::RangeLiteral.new( Crystal::NilLiteral.new, Crystal::NilLiteral.new, true), ].each do |literal| it "returns true if node is #{literal}" do subject.literal?(literal).should be_true end end it "returns false if node is not a literal" do subject.literal?(Crystal::Nop).should be_false end end describe "#node_source" do it "returns original source of the node" do s = %( a = 1 ) node = Crystal::Parser.new(s).parse source = subject.node_source node, s.split("\n") source.should eq "a = 1" end it "returns original source of multiline node" do s = %( if () :ok end ) node = Crystal::Parser.new(s).parse source = subject.node_source node, s.split("\n") source.should eq <<-CRYSTAL if () :ok end CRYSTAL end it "does not report source of node which has incorrect location" do s = %q( module MyModule macro conditional_error_for_inline_callbacks \{% raise "" %} end macro before_save(x = nil) end end ) node = as_nodes(s).nil_literal_nodes.first source = subject.node_source node, s.split("\n") if SemanticVersion.parse(Crystal::VERSION) <= SemanticVersion.parse("0.35.1") source.should be_nil else source.should eq "nil" end end end describe "#flow_command?" do it "returns true if this is return" do node = as_node("return 22") subject.flow_command?(node, false).should eq true end it "returns true if this is a break in a loop" do node = as_node("break") subject.flow_command?(node, true).should eq true end it "returns false if this is a break out of loop" do node = as_node("break") subject.flow_command?(node, false).should eq false end it "returns true if this is a next in a loop" do node = as_node("next") subject.flow_command?(node, true).should eq true end it "returns false if this is a next out of loop" do node = as_node("next") subject.flow_command?(node, false).should eq false end it "returns true if this is raise" do node = as_node("raise e") subject.flow_command?(node, false).should eq true end it "returns true if this is exit" do node = as_node("exit") subject.flow_command?(node, false).should eq true end it "returns true if this is abort" do node = as_node("abort") subject.flow_command?(node, false).should eq true end it "returns false otherwise" do node = as_node("foobar") subject.flow_command?(node, false).should eq false end end describe "#flow_expression?" do it "returns true if this is a flow command" do node = as_node("return") subject.flow_expression?(node, true).should eq true end it "returns true if this is if-else consumed by flow expressions" do node = as_node %( if foo return :foo else return :bar end ) subject.flow_expression?(node, false).should eq true end it "returns true if this is unless-else consumed by flow expressions" do node = as_node %( unless foo return :foo else return :bar end ) subject.flow_expression?(node).should eq true end it "returns true if this is case consumed by flow expressions" do node = as_node %( case when 1 return 1 when 2 return 2 else return 3 end ) subject.flow_expression?(node).should eq true end it "returns true if this is exception handler consumed by flow expressions" do node = as_node %( begin raise "exp" rescue e return e end ) subject.flow_expression?(node).should eq true end it "returns true if this while consumed by flow expressions" do node = as_node %( while true return end ) subject.flow_expression?(node).should eq true end it "returns false if this while with break" do node = as_node %( while true break end ) subject.flow_expression?(node).should eq false end it "returns true if this until consumed by flow expressions" do node = as_node %( until false return end ) subject.flow_expression?(node).should eq true end it "returns false if this until with break" do node = as_node %( until false break end ) subject.flow_expression?(node).should eq false end it "returns true if this expressions consumed by flow expressions" do node = as_node %( exp1 exp2 return ) subject.flow_expression?(node).should eq true end it "returns false otherwise" do node = as_node %( exp1 exp2 ) subject.flow_expression?(node).should eq false end end describe "#raise?" do it "returns true if this is a raise method call" do node = as_node "raise e" subject.raise?(node).should eq true end it "returns false if it has a receiver" do node = as_node "obj.raise e" subject.raise?(node).should eq false end it "returns false if size of the arguments doesn't match" do node = as_node "raise" subject.raise?(node).should eq false end end describe "#exit?" do it "returns true if this is a exit method call" do node = as_node "exit" subject.exit?(node).should eq true end it "returns true if this is a exit method call with one argument" do node = as_node "exit 1" subject.exit?(node).should eq true end it "returns false if it has a receiver" do node = as_node "obj.exit" subject.exit?(node).should eq false end it "returns false if size of the arguments doesn't match" do node = as_node "exit 1, 1" subject.exit?(node).should eq false end end describe "#abort?" do it "returns true if this is an abort method call" do node = as_node "abort" subject.abort?(node).should eq true end it "returns true if this is an abort method call with one argument" do node = as_node "abort \"message\"" subject.abort?(node).should eq true end it "returns true if this is an abort method call with two arguments" do node = as_node "abort \"message\", 1" subject.abort?(node).should eq true end it "returns false if it has a receiver" do node = as_node "obj.abort" subject.abort?(node).should eq false end it "returns false if size of the arguments doesn't match" do node = as_node "abort 1, 1, 1" subject.abort?(node).should eq false end end describe "#loop?" do it "returns true if this is a loop method call" do node = as_node "loop" subject.loop?(node).should eq true end it "returns false if it has a receiver" do node = as_node "obj.loop" subject.loop?(node).should eq false end it "returns false if size of the arguments doesn't match" do node = as_node "loop 1" subject.loop?(node).should eq false end end end end