50 lines
1.4 KiB
Go
50 lines
1.4 KiB
Go
package types
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import (
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"testing"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestPlusDecCoin(t *testing.T) {
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decCoinA1 := DecCoin{"A", sdk.NewDecWithPrec(11, 1)}
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decCoinA2 := DecCoin{"A", sdk.NewDecWithPrec(22, 1)}
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decCoinB1 := DecCoin{"B", sdk.NewDecWithPrec(11, 1)}
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// regular add
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res := decCoinA1.Plus(decCoinA1)
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require.Equal(t, decCoinA2, res, "sum of coins is incorrect")
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// bad denom add
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assert.Panics(t, func() {
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decCoinA1.Plus(decCoinB1)
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}, "expected panic on sum of different denoms")
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}
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func TestPlusCoins(t *testing.T) {
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one := sdk.NewDec(1)
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zero := sdk.NewDec(0)
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negone := sdk.NewDec(-1)
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two := sdk.NewDec(2)
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cases := []struct {
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inputOne DecCoins
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inputTwo DecCoins
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expected DecCoins
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}{
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{DecCoins{{"A", one}, {"B", one}}, DecCoins{{"A", one}, {"B", one}}, DecCoins{{"A", two}, {"B", two}}},
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{DecCoins{{"A", zero}, {"B", one}}, DecCoins{{"A", zero}, {"B", zero}}, DecCoins{{"B", one}}},
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{DecCoins{{"A", zero}, {"B", zero}}, DecCoins{{"A", zero}, {"B", zero}}, DecCoins(nil)},
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{DecCoins{{"A", one}, {"B", zero}}, DecCoins{{"A", negone}, {"B", zero}}, DecCoins(nil)},
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{DecCoins{{"A", negone}, {"B", zero}}, DecCoins{{"A", zero}, {"B", zero}}, DecCoins{{"A", negone}}},
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}
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for tcIndex, tc := range cases {
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res := tc.inputOne.Plus(tc.inputTwo)
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require.Equal(t, tc.expected, res, "sum of coins is incorrect, tc #%d", tcIndex)
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}
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}
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