111 lines
3.2 KiB
Go
111 lines
3.2 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package resource
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import (
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"testing"
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)
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func TestInt64AmountAsInt64(t *testing.T) {
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for _, test := range []struct {
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value int64
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scale Scale
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result int64
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ok bool
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}{
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{100, 0, 100, true},
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{100, 1, 1000, true},
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{100, -5, 0, false},
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{100, 100, 0, false},
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} {
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r, ok := int64Amount{value: test.value, scale: test.scale}.AsInt64()
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if r != test.result {
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t.Errorf("%v: unexpected result: %d", test, r)
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}
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if ok != test.ok {
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t.Errorf("%v: unexpected ok: %t", test, ok)
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}
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}
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}
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func TestInt64AmountAdd(t *testing.T) {
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for _, test := range []struct {
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a, b, c int64Amount
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ok bool
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}{
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{int64Amount{value: 100, scale: 1}, int64Amount{value: 10, scale: 2}, int64Amount{value: 200, scale: 1}, true},
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{int64Amount{value: 100, scale: 1}, int64Amount{value: 1, scale: 2}, int64Amount{value: 110, scale: 1}, true},
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{int64Amount{value: 100, scale: 1}, int64Amount{value: 1, scale: 100}, int64Amount{value: 1, scale: 100}, false},
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{int64Amount{value: -5, scale: 2}, int64Amount{value: 50, scale: 1}, int64Amount{value: 0, scale: 1}, true},
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{int64Amount{value: -5, scale: 2}, int64Amount{value: 5, scale: 2}, int64Amount{value: 0, scale: 2}, true},
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{int64Amount{value: mostPositive, scale: -1}, int64Amount{value: 1, scale: -1}, int64Amount{value: 0, scale: -1}, false},
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{int64Amount{value: mostPositive, scale: -1}, int64Amount{value: 0, scale: -1}, int64Amount{value: mostPositive, scale: -1}, true},
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{int64Amount{value: mostPositive / 10, scale: 1}, int64Amount{value: 10, scale: 0}, int64Amount{value: mostPositive, scale: -1}, false},
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} {
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c := test.a
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ok := c.Add(test.b)
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if ok != test.ok {
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t.Errorf("%v: unexpected ok: %t", test, ok)
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}
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if ok {
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if c != test.c {
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t.Errorf("%v: unexpected result: %d", test, c)
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}
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} else {
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if c != test.a {
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t.Errorf("%v: overflow addition mutated source: %d", test, c)
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}
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}
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// addition is commutative
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c = test.b
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if ok := c.Add(test.a); ok != test.ok {
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t.Errorf("%v: unexpected ok: %t", test, ok)
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}
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if ok {
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if c != test.c {
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t.Errorf("%v: unexpected result: %d", test, c)
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}
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} else {
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if c != test.b {
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t.Errorf("%v: overflow addition mutated source: %d", test, c)
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}
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}
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}
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}
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func TestInt64AsCanonicalString(t *testing.T) {
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for _, test := range []struct {
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value int64
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scale Scale
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result string
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exponent int32
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}{
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{100, 0, "100", 0},
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{100, 1, "1", 3},
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{100, -1, "10", 0},
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{10800, -10, "1080", -9},
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} {
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r, exp := int64Amount{value: test.value, scale: test.scale}.AsCanonicalBytes(nil)
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if string(r) != test.result {
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t.Errorf("%v: unexpected result: %s", test, r)
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}
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if exp != test.exponent {
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t.Errorf("%v: unexpected exponent: %d", test, exp)
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}
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}
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}
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