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convert many tests to specs
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@olbrich
olbrich committed Feb 24, 2012
1 parent 3b67590 commit c4e1680
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Showing 2 changed files with 63 additions and 98 deletions.
60 changes: 60 additions & 0 deletions spec/ruby-units/unit_spec.rb
View file
Expand Up @@ -107,6 +107,21 @@
its(:base) {should == subject}
end

describe Unit("1+1i m") do
it {should be_a Numeric}
it {should be_an_instance_of Unit}
its(:scalar) {should === Complex(1,1)}
its(:scalar) {should be_a Complex}
its(:units) {should == "m"}
its(:kind) {should == :length}
it {should_not be_temperature}
it {should_not be_degree}
it {should be_base}
it {should_not be_unitless}
it {should_not be_zero}
its(:base) {should == subject}
end

# scalar and unit
describe Unit("1 mm") do
it {should be_a Numeric}
Expand Down Expand Up @@ -425,6 +440,20 @@
its(:temperature_scale) {should be_nil}
end

describe Unit.new(1,"m^2","s^2") do
it {should be_an_instance_of Unit}
its(:scalar) {should be_an Integer}
its(:units) {should == "m^2/s^2"}
its(:kind) {should == :radiation}
it {should_not be_temperature}
it {should_not be_degree}
it {should be_base}
it {should_not be_unitless}
it {should_not be_zero}
its(:base) {should be_a Numeric}
its(:temperature_scale) {should be_nil}
end

#scientific notation
describe Unit.new("1e6 cells") do
it {should be_an_instance_of Unit}
Expand All @@ -440,7 +469,37 @@
its(:base) {should be_a Numeric}
its(:temperature_scale) {should be_nil}
end

#could be m*m
describe Unit("1 mm") do
its(:kind) {should == :length}
end

#could be centi-day
describe Unit("1 cd") do
its(:kind) {should == :luminous_power}
end

# could be milli-inch
describe Unit("1 min") do
its(:kind) {should == :time}
end

#could be femto-tons
describe Unit("1 ft") do
its(:kind) {should == :length}
end

#could be deci-ounce
describe Unit("1 doz") do
its(:kind) {should == :unitless}
end

describe 10.unit(Unit("1 mm")) do
its(:units) {should == "mm"}
its(:scalar) {should == 10}
end

end

describe "Unit handles attempts to create bad units" do
Expand Down Expand Up @@ -967,6 +1026,7 @@
context "compatible units" do
specify { (Unit("0 m") / Unit("10 m")).should == Unit(0)}
specify { (Unit("5 kg") / Unit("10 kg")).should == Rational(1,2)}
specify { (Unit("5 kg") / Unit("5 kg")).should == 1}
end

context "incompatible units" do
Expand Down
101 changes: 3 additions & 98 deletions test/test_ruby-units.rb
View file
Expand Up @@ -77,45 +77,7 @@ def teardown
Time.forced_now = nil
DateTime.forced_now = nil
end

def test_to_unit
unit1 = "1 mm".to_unit
assert_equal unit1, unit1.to_unit
assert Unit === unit1
unit2 = Unit("1 mm")
assert Unit === unit1
assert unit1 == unit2
unit1 = "2.54 cm".to_unit("in")
assert_in_delta 1, unit1.scalar, 0.001
assert_equal ['<inch>'], unit1.numerator
unit1 = "2.54 cm".unit("in")
assert_in_delta 1, unit1.scalar, 0.001
assert_equal ['<inch>'], unit1.numerator
unit1 = 1.unit
assert_in_delta 1, unit1.scalar, 0.001
assert_equal ['<1>'], unit1.numerator
unit1 = [1,'mm'].unit
assert_in_delta 1, unit1.scalar, 0.001
assert_equal ['<milli>','<meter>'], unit1.numerator
end

def test_create_from_array
unit1 = Unit.new(1, "mm^2", "ul^2")
assert_equal 1, unit1.scalar
assert_equal ['<milli>','<meter>','<milli>','<meter>'], unit1.numerator
assert_equal ['<micro>','<liter>','<micro>','<liter>'], unit1.denominator
end

def test_signature #"1 m s deg K kg A mol cd byte rad
unit1 = Unit.new("1 m*s*degK*kg*A*mol*cd*byte*rad*dollar")
assert_equal unit1.signature, (0..9).inject(0) {|product, n| product + 20**n}
end

def test_to_int
assert_raises(RuntimeError) {Unit.new("1.1 mm").to_i}
assert_nothing_raised {Unit.new(10.5).to_i}
end


def test_temperature_conversions
assert_raises(ArgumentError) { '-1 tempK'.unit}
assert_raises(ArgumentError) { '-1 tempR'.unit}
Expand Down Expand Up @@ -151,22 +113,6 @@ def test_temperature_conversions
assert_raises(ArgumentError) { c - '400 degK'.unit}
assert_equal a, a.convert_to('tempF')
end

# these units are 'ambiguous' and could be mis-parsed
def test_parse_tricky_units
unit1 = Unit.new('1 mm') #sometimes parsed as 'm*m'
assert_equal ['<milli>','<meter>'], unit1.numerator
unit2 = Unit.new('1 cd') # could be a 'centi-day' instead of a candela
assert_equal ['<candela>'], unit2.numerator
unit3 = Unit.new('1 min') # could be a 'milli-inch' instead of a minute
assert_equal ['<minute>'], unit3.numerator
unit4 = Unit.new('1 ft') # could be a 'femto-ton' instead of a foot
assert_equal ['<foot>'], unit4.numerator
unit5 = "1 atm".unit
assert_equal ['<atm>'], unit5.numerator
unit6 = "1 doz".unit
assert_equal ['<dozen>'], unit6.numerator
end

def test_to_s
unit1 = Unit.new("1")
Expand Down Expand Up @@ -198,8 +144,7 @@ def test_ideal_gas_law
t = ((p*v)/(n*r)).convert_to('tempK')
assert_in_delta 12027.16,t.base_scalar, 0.1
end



def test_eliminate_terms
a = ['<meter>','<meter>','<kelvin>','<second>']
b = ['<meter>','<meter>','<second>']
Expand All @@ -220,71 +165,31 @@ def test_unit_roots
assert_equal unit3**(1/3), unit1
end

def test_inspect
unit1 = Unit "1 mm"
assert_equal "1 mm", unit1.inspect
assert_not_equal "1.0 mm", unit1.inspect(:dump)
end

if defined?(Uncertain)
def test_uncertain
a = '1 +/- 1 mm'.unit
assert_equal a.to_s, '1 +/- 1 mm'
end
end

def test_time_conversions
today = Time.now
assert_equal today,@april_fools
last_century = today - '150 years'.unit
assert_equal last_century.to_date, DateTime.parse('1856-04-01')
end

def test_divide_results_in_unitless
a = '10 mg/ml'.unit
b = '10 mg/ml'.unit
assert_equal a/b, 1
end


def test_parse_durations
assert_equal "1:00".unit, '1 hour'.unit
assert_equal "1:30".unit, "1.5 hour".unit
assert_equal "1:30:30".unit, "1.5 hour".unit + '30 sec'.unit
assert_equal "1:30:30,200".unit, "1.5 hour".unit + '30 sec'.unit + '200 usec'.unit
end

def test_create_with_other_unit
a = '1 g'.unit
b = 0.unit(a)
assert_equal b, '0 g'.unit
end

def test_complex
assert_equal '1+1i mm'.unit.scalar, Complex(1,1)
assert_equal '1+1i'.unit.scalar, Complex(1,1)
assert_raises(RuntimeError) { '1+1i mm'.unit.to_c}
end

def test_to_date
a = Time.now
assert_equal a.send(:to_date), Date.today
end

def test_round_pounds
assert_equal '1 lbs'.unit, '1.1 lbs'.unit.round
end

def test_explicit_init
assert_equal '1 lbf'.unit, '1 <pound-force>'.unit
assert_equal '1 lbs'.unit, '1 <pound>'.unit
assert_equal('1 kg*m'.unit, '1 <kilogram>*<meter>'.unit)
end

def test_format_nil_string
assert_nothing_raised {"" % nil}
assert_nothing_raised {"" % false}
end

def test_to_s_cache
Unit.clear_cache
a = Unit.new('1 mm')
Expand Down

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