85 lines
2.6 KiB
Crystal
85 lines
2.6 KiB
Crystal
require "../../../spec_helper"
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module Ameba::AST
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describe CountingVisitor do
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describe "#visit" do
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it "allow to visit ASTNode" do
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node = Crystal::Parser.new("").parse
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visitor = CountingVisitor.new node
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node.accept visitor
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end
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end
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describe "#count" do
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it "is 1 for an empty method" do
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node = Crystal::Parser.new("def hello; end").parse
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visitor = CountingVisitor.new node
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visitor.count.should eq 1
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end
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it "is 1 if there is Macro::For" do
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code = <<-CRYSTAL
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def initialize
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{% for c in ALL_NODES %}
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true || false
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{% end %}
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end
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CRYSTAL
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node = Crystal::Parser.new(code).parse
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visitor = CountingVisitor.new node
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visitor.count.should eq 1
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end
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it "is 1 if there is Macro::If" do
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code = <<-CRYSTAL
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def initialize
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{% if foo.bar? %}
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true || false
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{% end %}
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end
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CRYSTAL
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node = Crystal::Parser.new(code).parse
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visitor = CountingVisitor.new node
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visitor.count.should eq 1
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end
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it "increases count for every exhaustive case" do
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code = <<-CRYSTAL
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def hello(a : Int32 | Int64 | Float32 | Float64)
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case a
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in Int32 then "int32"
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in Int64 then "int64"
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in Float32 then "float32"
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in Float64 then "float64"
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end
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end
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CRYSTAL
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node = Crystal::Parser.new(code).parse
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visitor = CountingVisitor.new node
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visitor.count.should eq 2
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end
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{% for pair in [
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{code: "if true; end", description: "conditional"},
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{code: "while true; end", description: "while loop"},
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{code: "until 1 < 2; end", description: "until loop"},
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{code: "begin; rescue; end", description: "rescue"},
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{code: "true || false", description: "or"},
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{code: "true && false", description: "and"},
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{
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code: "a : String | Int32 = 1; case a when true; end",
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description: "inexhaustive when",
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},
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] %}
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it "increases count for every {{ pair[:description].id }}" do
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node = Crystal::Parser.new("def hello; {{ pair[:code].id }} end").parse
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visitor = CountingVisitor.new node
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visitor.count.should eq 2
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end
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{% end %}
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end
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end
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end
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