2020-05-22 14:26:49 +00:00
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require "./spec_helper"
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describe Suntime do
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it "should return correct timestamp for example" do
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lat = 40.9
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lng = -74.3
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l = Time::Location.load("America/New_York")
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t = Suntime::Suntime.new(lat, lng, Time.local(1990, 6, 25, 0, 0, 0, location: l))
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2020-05-22 14:30:20 +00:00
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# TODO: These are stupid tests, figure out how to use epsilon for float tests in Crystal
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2020-05-22 14:26:49 +00:00
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t.day_of_year.should eq(176)
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2020-05-23 09:17:15 +00:00
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t.approx_time.should be_close(176.45, 0.01)
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t.approx_time(false).should be_close(176.95, 0.01)
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t.sun_mean_anomaly(176.456).should be_close(170.62, 0.01)
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t.sun_true_longitude(170.62).should be_close(93.56, 0.01)
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t.sun_right_ascension(93.56).should be_close(6.258, 0.01)
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t.sun_local_hour_angle(93.56).should be_close(-0.395, 0.01)
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t.calculate_h(-0.3957).should be_close(16.446, 0.01)
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t.local_mean_time(16.446, 6.258, 176.456).should be_close(5.441, 0.01)
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2020-05-22 14:26:49 +00:00
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a = t.sunrise
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a.year.should eq(1990)
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a.month.should eq(6)
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a.day.should eq(25)
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a.hour.should eq(5)
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a.minute.should eq(26)
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a.second.should eq(29)
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a.offset.should eq(-4 * 60 * 60)
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a.location.should eq l
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end
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it "should work for bangalore" do
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# +5.5
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bangalore_tz = Time::Location.load("Asia/Kolkata")
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t = Suntime::Suntime.new(12.955800, 77.620979, Time.local(2020, 5, 23, 0, 0, 0, location: bangalore_tz))
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a = t.sunrise
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a.year.should eq(2020)
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a.month.should eq(5)
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a.day.should eq(23)
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a.hour.should eq(5)
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a.minute.should eq(52)
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a.second.should eq(41)
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a.offset.should eq(5.5 * 60 * 60)
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a.location.should eq bangalore_tz
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b = t.sunset
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b.year.should eq(2020)
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b.month.should eq(5)
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b.day.should eq(23)
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b.hour.should eq(18)
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b.minute.should eq(40)
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b.second.should eq(0)
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b.offset.should eq(5.5 * 60 * 60)
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b.location.should eq bangalore_tz
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end
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end
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