fraction_test.go

package rusnum

import (
	"math"
	"reflect"
	"testing"
)

func Test_fractionFromFloat(t *testing.T) {
	type args struct {
		fl float64
	}
	tests := []struct {
		name string
		args args
		want Fraction
	}{
		{name: "0",
			args: args{fl: 123456789},
			want: NoFraction,
		},
		{name: "1",
			args: args{fl: 12345678.9},
			want: Tenth,
		},
		{name: "2",
			args: args{fl: 1234567.89},
			want: Hundredth,
		},
		{name: "3",
			args: args{fl: 123456.789},
			want: Thousandth,
		},
		{name: "4",
			args: args{fl: 12345.6789},
			want: Tenthousandth,
		},
		{name: "5",
			args: args{fl: 1234.56789},
			want: Hundredthousandth,
		},
		{name: "6",
			args: args{fl: 123.456789},
			want: Millionth,
		},
		{name: "7",
			args: args{fl: 12.3456789},
			want: Tenmillionth,
		},
		{name: "8",
			args: args{fl: 1.23456789},
			want: Hundredmillionth,
		},
		{name: "9",
			args: args{fl: .123456789},
			want: Milliardth,
		},
		{name: "E",
			args: args{fl: math.E},
			want: Hundredmilliardth,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := fractionFromFloat(tt.args.fl); !reflect.DeepEqual(got, tt.want) {
				t.Errorf("fractionFromFloat() = %v, want %v", got, tt.want)
			}
		})
	}
}