81 lines
1.8 KiB
Go
81 lines
1.8 KiB
Go
package roman
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import (
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"fmt"
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"testing"
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"testing/quick"
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)
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var cases = []struct {
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Arabic int
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Roman string
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}{
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{Arabic: 1, Roman: "I"},
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{Arabic: 2, Roman: "II"},
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{Arabic: 3, Roman: "III"},
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{Arabic: 4, Roman: "IV"},
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{Arabic: 5, Roman: "V"},
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{Arabic: 6, Roman: "VI"},
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{Arabic: 7, Roman: "VII"},
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{Arabic: 8, Roman: "VIII"},
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{Arabic: 9, Roman: "IX"},
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{Arabic: 10, Roman: "X"},
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{Arabic: 14, Roman: "XIV"},
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{Arabic: 18, Roman: "XVIII"},
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{Arabic: 20, Roman: "XX"},
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{Arabic: 39, Roman: "XXXIX"},
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{Arabic: 40, Roman: "XL"},
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{Arabic: 47, Roman: "XLVII"},
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{Arabic: 49, Roman: "XLIX"},
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{Arabic: 50, Roman: "L"},
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{Arabic: 100, Roman: "C"},
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{Arabic: 90, Roman: "XC"},
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{Arabic: 400, Roman: "CD"},
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{Arabic: 500, Roman: "D"},
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{Arabic: 900, Roman: "CM"},
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{Arabic: 1000, Roman: "M"},
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{Arabic: 1984, Roman: "MCMLXXXIV"},
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{Arabic: 3999, Roman: "MMMCMXCIX"},
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{Arabic: 2014, Roman: "MMXIV"},
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{Arabic: 1006, Roman: "MVI"},
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{Arabic: 798, Roman: "DCCXCVIII"},
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}
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func TestRomanNemerals(t *testing.T) {
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for _, test := range cases {
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t.Run(fmt.Sprintf("%d gets converted to %q", test.Arabic, test.Roman), func(t *testing.T) {
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got := ConvertToRoman(test.Arabic)
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want := test.Roman
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if got != want {
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t.Errorf("got %q, want %q", got, want)
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}
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})
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}
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}
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func TestConvertingToArabic(t *testing.T) {
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for _, test := range cases {
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t.Run(fmt.Sprintf("%q gets converted to %d", test.Roman, test.Arabic), func(t *testing.T) {
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got := ConvertToArabic(test.Roman)
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want := test.Arabic
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if got != want {
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t.Errorf("got %d, want %d", got, want)
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}
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})
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}
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}
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func TestPropertiesOfConversion(t *testing.T) {
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assertion := func(arabic int) bool {
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roman := ConvertToRoman(arabic)
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fromRoman := ConvertToArabic(roman)
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return fromRoman == arabic
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}
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if err := quick.Check(assertion, nil); err != nil {
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t.Error("failed checks", err)
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}
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}
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