From 064f8b0b5847f297accb45e12b2dd7375b6792d2 Mon Sep 17 00:00:00 2001
From: rigelrozanski <rigel.rozanski@gmail.com>
Date: Fri, 28 Sep 2018 19:23:01 -0400
Subject: [PATCH] dec coin tests

---
 x/distribution/types/codec.go               |  2 +-
 x/distribution/types/dec_coin_test.go       | 57 +++++++++++++++++++++
 x/distribution/types/delegator_info_test.go |  6 +++
 x/distribution/types/fee_pool_test.go       |  6 +++
 4 files changed, 70 insertions(+), 1 deletion(-)
 create mode 100644 x/distribution/types/dec_coin_test.go
 create mode 100644 x/distribution/types/delegator_info_test.go
 create mode 100644 x/distribution/types/fee_pool_test.go

diff --git a/x/distribution/types/codec.go b/x/distribution/types/codec.go
index edb121d20d..55d7c6cdae 100644
--- a/x/distribution/types/codec.go
+++ b/x/distribution/types/codec.go
@@ -12,7 +12,7 @@ func RegisterCodec(cdc *codec.Codec) {
 	cdc.RegisterConcrete(MsgSetWithdrawAddress{}, "cosmos-sdk/MsgModifyWithdrawAddress", nil)
 }
 
-// generic sealed codec to be used throughout sdk
+// generic sealed codec to be used throught module
 var MsgCdc *codec.Codec
 
 func init() {
diff --git a/x/distribution/types/dec_coin_test.go b/x/distribution/types/dec_coin_test.go
new file mode 100644
index 0000000000..ee8aa30c0d
--- /dev/null
+++ b/x/distribution/types/dec_coin_test.go
@@ -0,0 +1,57 @@
+package types
+
+import (
+	"testing"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestPlusDecCoin(t *testing.T) {
+	decCoinA1 := DecCoin("A", sdk.NewDecWithPrec(11, 1))
+	decCoinA2 := DecCoin("A", sdk.NewDecWithPrec(22, 1))
+	decCoinB1 := DecCoin("B", sdk.NewDecWithPrec(11, 1))
+	decCoinC1 := DecCoin("C", sdk.NewDecWithPrec(11, 1))
+	decCoinCn4 := DecCoin("C", sdk.NewDecWithPrec(-44, 1))
+	decCoinC5 := DecCoin("C", sdk.NewDecWithPrec(55, 1))
+
+	cases := []struct {
+		inputOne DecCoin
+		inputTwo DecCoin
+		expected DecCoin
+	}{
+		{decCoinA1, decCoinA1, decCoinA2},
+		{decCoinA1, decCoinB1, decCoinA1},
+		{decCoinCn4, decCoinC5, decCoinC1},
+	}
+	for tcIndex, tc := range cases {
+		res := tc.inputOne.Plus(tc.inputTwo)
+		require.Equal(t, tc.expected, res, "sum of coins is incorrect, tc #%d", tcIndex)
+	}
+}
+
+func TestPlusCoins(t *testing.T) {
+	one := sdk.NewDec(1)
+	zero := sdk.NewDec(0)
+	negone := sdk.NewDec(-1)
+	two := sdk.NewDec(2)
+
+	cases := []struct {
+		inputOne DecCoins
+		inputTwo DecCoins
+		expected DecCoins
+	}{
+		{DecCoins{{"A", one}, {"B", one}}, DecCoins{{"A", one}, {"B", one}}, DecCoins{{"A", two}, {"B", two}}},
+		{DecCoins{{"A", zero}, {"B", one}}, DecCoins{{"A", zero}, {"B", zero}}, DecCoins{{"B", one}}},
+		{DecCoins{{"A", zero}, {"B", zero}}, DecCoins{{"A", zero}, {"B", zero}}, DecCoins(nil)},
+		{DecCoins{{"A", one}, {"B", zero}}, DecCoins{{"A", negone}, {"B", zero}}, DecCoins(nil)},
+		{DecCoins{{"A", negone}, {"B", zero}}, DecCoins{{"A", zero}, {"B", zero}}, DecCoins{{"A", negone}}},
+	}
+
+	for tcIndex, tc := range cases {
+		res := tc.inputOne.Plus(tc.inputTwo)
+		assert.True(t, res.IsValid())
+		require.Equal(t, tc.expected, res, "sum of coins is incorrect, tc #%d", tcIndex)
+	}
+}
diff --git a/x/distribution/types/delegator_info_test.go b/x/distribution/types/delegator_info_test.go
new file mode 100644
index 0000000000..af89f40ca0
--- /dev/null
+++ b/x/distribution/types/delegator_info_test.go
@@ -0,0 +1,6 @@
+package types
+
+import "testing"
+
+func TestWithdrawRewards(t *testing.T) {
+}
diff --git a/x/distribution/types/fee_pool_test.go b/x/distribution/types/fee_pool_test.go
new file mode 100644
index 0000000000..e20d283b8d
--- /dev/null
+++ b/x/distribution/types/fee_pool_test.go
@@ -0,0 +1,6 @@
+package types
+
+import "testing"
+
+func TestTotalAccumUpdate(t *testing.T) {
+}