init: initial commit

services/api/internal/portfolio/domain/money_test.go

@@ -0,0 +1,21 @@
+package domain
+
+import "testing"
+
+func TestExactMoney(t *testing.T) {
+	for _, tc := range []struct {
+		input     string
+		minor     int64
+		formatted string
+	}{{"0", 0, "0.00"}, {"0.01", 1, "0.01"}, {"100000.10", 10000010, "100000.10"}, {"3.1", 310, "3.10"}, {"1000000000.00", 100000000000, "1000000000.00"}} {
+		amount, err := ParseMoney(tc.input)
+		if err != nil || amount != tc.minor || FormatMoney(amount) != tc.formatted {
+			t.Fatalf("%s: amount=%d err=%v", tc.input, amount, err)
+		}
+	}
+	for _, input := range []string{"-1", "1.001", "1e3", "NaN", " 1", "01", "1.", "1000000000.01", "999999999999999999999", ""} {
+		if _, err := ParseMoney(input); err == nil {
+			t.Fatalf("accepted invalid amount %q", input)
+		}
+	}
+}