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backend/examples/plugin/claude-web-search-router/go/detect_test.go

@@ -0,0 +1,71 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestDetectClaudeCodeWebSearchFromFixture(t *testing.T) {
+	root := filepath.Join("..", "..", "..", "..", "temp", "1.json")
+	raw, errRead := os.ReadFile(root)
+	if errRead != nil {
+		t.Skipf("fixture not found: %v", errRead)
+	}
+	// Fixture is HTTP capture; extract JSON request body between first blank line after headers.
+	body := extractHTTPJSONBody(raw)
+	if len(body) == 0 {
+		t.Fatal("empty JSON body in fixture")
+	}
+	if !hasClaudeTypedWebSearchTool(body) {
+		t.Fatal("fixture should declare web_search_20250305")
+	}
+	if !looksLikeClaudeCodeWebSearchAssistant(body) {
+		t.Fatal("fixture should match Claude Code web search assistant heuristics")
+	}
+	if !isClaudeCodeBuiltinWebSearchRequest(body, true) {
+		t.Fatal("expected match with require_web_search_only=true")
+	}
+	query := extractClaudeWebSearchQuery(body)
+	if query == "" {
+		t.Fatal("expected non-empty search query")
+	}
+	if want := "北京天气 2026年6月16日"; query != want {
+		t.Fatalf("query = %q, want %q", query, want)
+	}
+}
+
+func extractHTTPJSONBody(raw []byte) []byte {
+	text := string(raw)
+	idx := 0
+	for {
+		next := findDoubleNewline(text, idx)
+		if next < 0 {
+			return nil
+		}
+		rest := trimLeft(text[next:])
+		if len(rest) > 0 && rest[0] == '{' {
+			return []byte(rest)
+		}
+		idx = next + 1
+	}
+}
+
+func findDoubleNewline(s string, from int) int {
+	for i := from; i+1 < len(s); i++ {
+		if s[i] == '\n' && s[i+1] == '\n' {
+			return i + 2
+		}
+		if s[i] == '\r' && i+3 < len(s) && s[i+1] == '\n' && s[i+2] == '\r' && s[i+3] == '\n' {
+			return i + 4
+		}
+	}
+	return -1
+}
+
+func trimLeft(s string) string {
+	for len(s) > 0 && (s[0] == '\r' || s[0] == '\n' || s[0] == ' ') {
+		s = s[1:]
+	}
+	return s
+}