package search
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import (
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"testing"
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)
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// TestExploreParagraphExtraction 段落截取：只输出命中关键词的段落，整段不截半句
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func TestExploreParagraphExtraction(t *testing.T) {
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content := "# 标题\n\n第一段讲称重。\n\n## 补气流程\n\n补气失败时先检查阀门。\n\n## 其他\n\n无关内容。\n"
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got := extractRelevantParagraphs(content, []string{"补气"}, 100)
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want := "## 补气流程\n\n补气失败时先检查阀门。\n"
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if got != want {
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t.Errorf("段落截取:\n got=%q\nwant=%q", got, want)
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}
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}
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// TestExploreWholeDocWhenSmall 文档短于预算时整篇输出
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func TestExploreWholeDocWhenSmall(t *testing.T) {
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got := extractRelevantParagraphs("短文档\n", []string{"不存在"}, 10000)
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if got != "短文档\n" {
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t.Errorf("应整篇输出: %q", got)
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}
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}
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// TestExploreKeywordExpansion 长 CJK 词拆 bigram（原词保留，ASCII/短词不拆）
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func TestExploreKeywordExpansion(t *testing.T) {
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got := expandKeywords([]string{"电子秤补气失败", "补气", "abc"})
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want := []string{"电子秤补气失败", "电子", "子秤", "秤补", "补气", "气失", "失败", "补气", "abc"}
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if len(got) != len(want) {
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t.Fatalf("展开数量: got=%d want=%d (%v)", len(got), len(want), got)
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}
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for i := range want {
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if got[i] != want[i] {
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t.Errorf("第 %d 项: got=%q want=%q", i, got[i], want[i])
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}
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}
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}
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func TestExploreBudget(t *testing.T) {
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// 用 extractRelevantParagraphs 的预算版验证：预算 20 字节，命中段落 30 字节 → 输出空（宁缺毋滥，不截半段）
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got := extractWithBudget("## 段落\n\n这是一段超过预算的内容啊\n", []string{"段落"}, 20)
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if got != "" {
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t.Errorf("超预算段落应跳过: %q", got)
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}
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}
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