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98 lines
1.9 KiB
98 lines
1.9 KiB
package main_test
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import (
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"testing"
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ks "git.jxs.me/r/knapsack"
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"github.com/carlmjohnson/be"
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)
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func TestDefaultsZero(t *testing.T) {
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result := ks.MaxValue(0, []ks.Book{})
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be.Equal(t, 0, result)
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}
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func TestEmpty(t *testing.T) {
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result := ks.DynamicMaxValue(1, []ks.Book{})
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be.Equal(t, 0, result)
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}
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func TestFitsOne(t *testing.T) {
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result := ks.MaxValue(1, []ks.Book{
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{Weight: 1, Value: 2},
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})
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be.Equal(t, 2, result)
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}
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func TestFitsHigher(t *testing.T) {
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result := ks.MaxValue(1, []ks.Book{
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{Weight: 1, Value: 2},
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{Weight: 1, Value: 3},
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})
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be.Equal(t, 3, result)
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}
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func TestPrefersMultiple(t *testing.T) {
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result := ks.MaxValue(3, []ks.Book{
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{Weight: 3, Value: 4},
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{Weight: 1, Value: 1},
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{Weight: 1, Value: 2},
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{Weight: 1, Value: 3},
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})
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be.Equal(t, 6, result)
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}
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func TestIgnoresTooBig(t *testing.T) {
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result := ks.MaxValue(1, []ks.Book{
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{Weight: 10, Value: 4},
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{Weight: 1, Value: 1},
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})
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be.Equal(t, 1, result)
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}
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// Dynamic
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func TestDynamicDefaultsZero(t *testing.T) {
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result := ks.DynamicMaxValue(0, []ks.Book{})
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be.Equal(t, 0, result)
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}
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func TestDynamicFitsOne(t *testing.T) {
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result := ks.DynamicMaxValue(1, []ks.Book{
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{Weight: 1, Value: 2},
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})
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be.Equal(t, 2, result)
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}
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func TestDynamicFitsHigher(t *testing.T) {
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result := ks.DynamicMaxValue(1, []ks.Book{
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{Weight: 1, Value: 3},
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{Weight: 1, Value: 2},
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})
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be.Equal(t, 3, result)
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}
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func TestDynamicPrefersMultiple(t *testing.T) {
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result := ks.DynamicMaxValue(3, []ks.Book{
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{Weight: 3, Value: 4},
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{Weight: 1, Value: 1},
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{Weight: 1, Value: 2},
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{Weight: 1, Value: 3},
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})
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be.Equal(t, 6, result)
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}
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func TestDynamicIgnoresTooBig(t *testing.T) {
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result := ks.DynamicMaxValue(1, []ks.Book{
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{Weight: 10, Value: 4},
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{Weight: 1, Value: 1},
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})
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be.Equal(t, 1, result)
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}
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func TestDynamicEmpty(t *testing.T) {
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result := ks.DynamicMaxValue(1, []ks.Book{})
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be.Equal(t, 0, result)
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}
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