71 lines
2.6 KiB
Go
71 lines
2.6 KiB
Go
package service
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import (
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"testing"
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"github.com/shopspring/decimal"
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"github.com/wmms/wmms/internal/model"
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)
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// ClassifyStock 是库存状态的唯一判定入口，这张表同时钉住"新增物料不误报"和
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// "真的低于阈值要报警"两侧的边界。它必须与 repository.stockWarningHavingSQL 一致。
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func TestClassifyStockBoundaries(t *testing.T) {
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cases := []struct {
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name string
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totalOnHand string
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warningStock string
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warningEnabled bool
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want string
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}{
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// 阈值为 0 是合法配置，含义是"库存降到 0 时预警"，不再被排除在预警之外。
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{"阈值0启用且库存归零", "0", "0", true, model.StockStatusLow},
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{"阈值0启用但还剩一点", "0.000001", "0", true, model.StockStatusNormal},
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{"有货且阈值为0", "5", "0", true, model.StockStatusNormal},
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// 没配过规则和手动关闭预警由同一个 warningEnabled=false 表达，一律不报警。
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{"没配过预警规则", "0", "0", false, model.StockStatusNormal},
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{"设了阈值但库存归零", "0", "10", true, model.StockStatusLow},
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{"低于阈值", "5", "10", true, model.StockStatusLow},
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{"恰好触达阈值即预警", "10", "10", true, model.StockStatusLow},
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{"略高于阈值", "10.000001", "10", true, model.StockStatusNormal},
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{"高于阈值", "15", "10", true, model.StockStatusNormal},
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{"用完但手动关闭预警", "0", "10", false, model.StockStatusNormal},
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{"低于阈值但手动关闭预警", "5", "10", false, model.StockStatusNormal},
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{"有货且手动关闭预警", "15", "10", false, model.StockStatusNormal},
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// 数量是 decimal 字符串，按字典序比较会把 "370" 判成小于 "50"。
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{"大数按数值而非字典序比较", "370.000000", "50.000000", true, model.StockStatusNormal},
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}
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for _, tc := range cases {
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t.Run(tc.name, func(t *testing.T) {
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got := ClassifyStock(
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decimal.RequireFromString(tc.totalOnHand),
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decimal.RequireFromString(tc.warningStock),
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tc.warningEnabled,
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)
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if got != tc.want {
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t.Fatalf("ClassifyStock(%s, %s, %v) = %s, want %s",
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tc.totalOnHand, tc.warningStock, tc.warningEnabled, got, tc.want)
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}
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})
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}
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}
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func TestSignedChangeQuantityUsesTheSameConventionForInboundAndOutbound(t *testing.T) {
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quantity := decimal.NewFromInt(100)
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cases := []struct {
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logType string
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want string
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}{
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{logType: "in", want: "100"},
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{logType: "out", want: "-100"},
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}
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for _, tc := range cases {
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t.Run(tc.logType, func(t *testing.T) {
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if got := signedChangeQuantity(tc.logType, quantity); !got.Equal(decimal.RequireFromString(tc.want)) {
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t.Fatalf("signedChangeQuantity(%q, 100) = %s, want %s", tc.logType, got, tc.want)
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}
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})
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}
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}
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