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require_relative '../../spec_helper'
describe "GC.stat" do
it "returns hash of values" do
stat = GC.stat
stat.should be_kind_of(Hash)
stat.keys.should.include?(:count)
end
it "updates the given hash values" do
hash = { count: "hello", __other__: "world" }
stat = GC.stat(hash)
stat.should be_kind_of(Hash)
stat.should equal hash
stat[:count].should be_kind_of(Integer)
stat[:__other__].should == "world"
end
it "the values are all Integer since rb_gc_stat() returns size_t" do
GC.stat.values.each { |value| value.should be_kind_of(Integer) }
end
it "can return a single value" do
GC.stat(:count).should be_kind_of(Integer)
end
it "increases count after GC is run" do
count = GC.stat(:count)
GC.start
GC.stat(:count).should > count
end
it "increases major_gc_count after GC is run" do
count = GC.stat(:major_gc_count)
GC.start
GC.stat(:major_gc_count).should > count
end
it "provides some number for count" do
GC.stat(:count).should be_kind_of(Integer)
GC.stat[:count].should be_kind_of(Integer)
end
it "provides some number for heap_free_slots" do
GC.stat(:heap_free_slots).should be_kind_of(Integer)
GC.stat[:heap_free_slots].should be_kind_of(Integer)
end
it "provides some number for total_allocated_objects" do
GC.stat(:total_allocated_objects).should be_kind_of(Integer)
GC.stat[:total_allocated_objects].should be_kind_of(Integer)
end
it "raises an error if argument is not nil, a symbol, or a hash" do
-> { GC.stat(7) }.should raise_error(TypeError, "non-hash or symbol given")
end
it "raises an error if an unknown key is given" do
-> { GC.stat(:foo) }.should raise_error(ArgumentError, "unknown key: foo")
end
end
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