Rename .go files to match package rename

convertroman_test.go

@@ -0,0 +1,60 @@
+package convertroman
+
+import (
+	"fmt"
+	"testing"
+)
+
+var testCases = map[string]int{
+	"I": 1, "II": 2, "III": 3, "IV": 4, "V": 5, "VI": 6,
+	"VII": 7, "VIII": 8, "IX": 9, "X": 10, "XI": 11, "XII": 12,
+	"XIII": 13, "XIV": 14, "XV": 15, "XVI": 16, "XVII": 17,
+	"XVIII": 18, "XIX": 19, "XX": 20, "XXXI": 31, "XXXII": 32,
+	"XXXIII": 33, "XXXIV": 34, "XXXV": 35, "XXXVI": 36, "XXXVII": 37,
+	"XXXVIII": 38, "XXXIX": 39, "XL": 40, "XLI": 41, "XLII": 42,
+	"XLIII": 43, "XLIV": 44, "XLV": 45, "XLVI": 46, "XLVII": 47,
+	"XLVIII": 48, "XLIX": 49, "L": 50, "LXXXIX": 89, "XC": 90,
+	"XCI": 91, "XCII": 92, "XCIII": 93, "XCIV": 94, "XCV": 95,
+	"XCVI": 96, "XCVII": 97, "XCVIII": 98, "XCIX": 99, "C": 100,
+	"CI": 101, "CII": 102, "CIII": 103, "CIV": 104, "CV": 105,
+	"CVI": 106, "CVII": 107, "CVIII": 108, "CIX": 109, "CXLIX": 149,
+	"CCCXLIX": 349, "CDLVI": 456, "D": 500, "DCIV": 604, "DCCLXXXIX": 789,
+	"DCCCXLIX": 849, "CMIV": 904, "M": 1000, "MVII": 1007, "MLXVI": 1066,
+	"MCCXXXIV": 1234, "MDCCLXXVI": 1776, "MMXXI": 2021, "MMDCCCVI": 2806,
+	"MMCMXCIX": 2999, "MMM": 3000, "MMMCMLXXIX": 3979, "MMMCMXCIX": 3999,
+}
+
+func TestFromInt(t *testing.T) {
+	for expected, input := range testCases {
+		out, err := FromInt(input)
+		if err != nil {
+			t.Errorf("IntToString(%d) returned an error %s", input, err.Error())
+		}
+		if out != expected {
+			t.Errorf("IntToString(%d) = %s; want %s", input, out, expected)
+		}
+	}
+	_, err := FromInt(100000)
+	if err == nil {
+		t.Errorf("IntToString(%d) expected an error", 100000)
+	}
+	_, err = FromInt(0)
+	if err == nil {
+		t.Errorf("IntToString(%d) expected an error", 0)
+	}
+}
+
+func BenchmarkFromInt(b *testing.B) {
+	b.ReportAllocs()
+	for i := 0; i < b.N; i++ {
+		_, _ = FromInt(3999)
+	}
+}
+
+func ExampleFromInt() {
+	roman, err := FromInt(4)
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println(roman == "IV") // True
+}