Files
hyperguild/ingestion/internal/wing/router_test.go
T
mathiasandClaude Sonnet 5.5 6f5fb481ad fix(wing): client filter handles multi-word/\s/\b patterns, homoglyphs, marks, fillers; checked in bounded chunks (review of #211, pass 2)
Views of each chunk: as is; NFKD + marks/format/fillers dropped + Cyrillic/Greek
lookalikes mapped + dashes normalised, with whitespace collapsed (acme corp,
\s) or removed (acme-\nclient); and a soft hyphen read as a dash. Chunks of 1 MiB
with a 4 KiB overlap bound the folding's allocation (it was ~14x the input: 919
MiB for a 64 MiB note). Documented limits: leetspeak, punctuation splits,
encodings and homoglyphs outside a small table. Mutation-checked.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
2026-10-20 20:45:00 +02:00

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package wing_test
import (
"context"
"regexp"
"strings"
"testing"
"github.com/stretchr/testify/assert"
"github.com/mathiasbq/hyperguild/ingestion/internal/wing"
)
func routerBrain(t *testing.T) string {
dir := t.TempDir()
writePage(t, dir, "wiki/homelab/facts/a.md", "x")
writePage(t, dir, "wiki/rikatillsammans/facts/b.md", "x")
return dir
}
func TestRouter_Decisions(t *testing.T) {
tests := []struct {
name string
note wing.Note
want wing.Source
wantWing string
}{
{"no signal goes to the default wing", wing.Note{Text: "a talk about agents"}, wing.Default, "web-clip"},
{"a subfolder naming an existing wing places there", wing.Note{Dir: "homelab", Text: "x"}, wing.Explicit, "homelab"},
{"a deliberate subfolder into a client wing is the owner's call and is placed", wing.Note{Dir: "rikatillsammans", Text: "x"}, wing.Explicit, "rikatillsammans"},
{"frontmatter wing places like a subfolder", wing.Note{FrontmatterWing: "homelab", Text: "x"}, wing.Explicit, "homelab"},
{"subfolder is case-insensitive", wing.Note{Dir: "HomeLab", Text: "x"}, wing.Explicit, "homelab"},
{"a typo never creates a wing", wing.Note{Dir: "hoemlab", Text: "x"}, wing.Exception, "hoemlab"},
{"conflicting signals are parked", wing.Note{Dir: "homelab", FrontmatterWing: "rikatillsammans", Text: "x"}, wing.Exception, ""},
{"the default wing may be named explicitly even before it exists", wing.Note{Dir: "web-clip", Text: "x"}, wing.Explicit, "web-clip"},
{"client marker with no signal is parked, not defaulted", wing.Note{Text: "notes from the ACME-CLIENT kickoff"}, wing.Exception, ""},
{"client marker does not block a deliberate subfolder", wing.Note{Dir: "homelab", Text: "ACME-CLIENT"}, wing.Explicit, "homelab"},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
r := wing.Router{BrainDir: routerBrain(t), Default: "web-clip", ClientBlock: regexp.MustCompile(`(?i)acme-client`)}
d := r.Resolve(context.Background(), tt.note)
assert.Equal(t, tt.want, d.Source)
assert.Equal(t, tt.wantWing, d.Wing)
assert.NotEmpty(t, d.Reason)
})
}
}
func TestRouter_ReadsTheWingsFreshOnEveryDecision(t *testing.T) {
dir := routerBrain(t)
r := wing.Router{BrainDir: dir, Default: "web-clip"}
assert.Equal(t, wing.Exception, r.Resolve(context.Background(), wing.Note{Dir: "newwing", Text: "x"}).Source)
writePage(t, dir, "wiki/newwing/facts/c.md", "x") // a wing created after startup
assert.Equal(t, wing.Explicit, r.Resolve(context.Background(), wing.Note{Dir: "newwing", Text: "x"}).Source,
"a wing made while the server runs is usable without a restart")
}
func TestRouter_AnUnreadableBrainParksInsteadOfGuessing(t *testing.T) {
r := wing.Router{BrainDir: t.TempDir() + "/missing", Default: "web-clip"}
d := r.Resolve(context.Background(), wing.Note{Dir: "homelab", Text: "x"})
assert.Equal(t, wing.Exception, d.Source)
}
func TestRouter_WithoutADefaultAnUnsignalledNoteIsParked(t *testing.T) {
r := wing.Router{BrainDir: routerBrain(t)}
assert.Equal(t, wing.Exception, r.Resolve(context.Background(), wing.Note{Text: "x"}).Source)
}
func TestRouter_ADefaultThatIsNotAPlainNameIsRefused(t *testing.T) {
r := wing.Router{BrainDir: routerBrain(t), Default: "../escape"}
assert.Equal(t, wing.Exception, r.Resolve(context.Background(), wing.Note{Text: "x"}).Source)
}
func TestRouter_ANameThatIsNotPlainIsRefusedAsSuch(t *testing.T) {
for _, bad := range []string{"../x", "a/b", "has space", "dot.ted"} {
t.Run(bad, func(t *testing.T) {
// Default equals the bad name: the "named explicitly" shortcut for the
// default wing must not wave a malformed name through.
r := wing.Router{BrainDir: routerBrain(t), Default: bad}
d := r.Resolve(context.Background(), wing.Note{Dir: bad, Text: "x"})
assert.Equal(t, wing.Exception, d.Source)
assert.Empty(t, d.Wing, "a malformed name is never echoed as a proposal")
assert.Contains(t, d.Reason, "not a usable wing name")
})
}
}
func TestNewRouter(t *testing.T) {
dir := routerBrain(t)
t.Run("valid", func(t *testing.T) {
r, err := wing.NewRouter(dir, "web-clip", "acme-client|globex")
assert.NoError(t, err)
d := r.Resolve(context.Background(), wing.Note{Text: "kickoff with GLOBEX"})
assert.Equal(t, wing.Exception, d.Source, "the marker is matched case-insensitively")
})
t.Run("no marker pattern means no content check", func(t *testing.T) {
r, err := wing.NewRouter(dir, "web-clip", "")
assert.NoError(t, err)
assert.Equal(t, wing.Default, r.Resolve(context.Background(), wing.Note{Text: "anything"}).Source)
})
t.Run("a default that is not a plain wing name is a startup error", func(t *testing.T) {
_, err := wing.NewRouter(dir, "Web Clip", "")
assert.Error(t, err)
})
t.Run("an empty default is a startup error", func(t *testing.T) {
_, err := wing.NewRouter(dir, "", "")
assert.Error(t, err)
})
t.Run("a pattern that does not compile is a startup error", func(t *testing.T) {
_, err := wing.NewRouter(dir, "web-clip", "([unclosed")
assert.Error(t, err, "a client filter that silently does nothing is worse than none")
})
}
// From the review of #211: the content filter is the only guard on the default
// lane, so it must survive the cheap evasions.
func TestRouter_ClientMarkerSurvivesCheapEvasions(t *testing.T) {
r := wing.Router{BrainDir: routerBrain(t), Default: "web-clip", ClientBlock: regexp.MustCompile(`(?i)acme-client`)}
tests := []struct{ name, text string }{
{"non-breaking hyphen", "notes on acme‑client"},
{"zero-width joiner inside", "notes on acme\u200d-client"},
{"zero-width space inside", "notes on ac\u200bme-client"},
{"split across lines", "notes on acme-\nclient"},
{"spaced hyphen", "notes on acme - client"},
{"fullwidth letters", "notes on acme-client"},
{"soft hyphen", "notes on acme\u00ad-client"},
{"en dash", "notes on acme–client"},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
d := r.Resolve(context.Background(), wing.Note{Text: tt.text})
assert.Equal(t, wing.Exception, d.Source, tt.text)
})
}
t.Run("an unrelated text still files", func(t *testing.T) {
d := r.Resolve(context.Background(), wing.Note{Text: "a talk about agents and a client-server model"})
assert.Equal(t, wing.Default, d.Source)
})
}
func TestRouter_FolderNamesAreAsciiAndNotReserved(t *testing.T) {
dir := routerBrain(t)
writePage(t, dir, "wiki/kubernetes/facts/a.md", "x")
r := wing.Router{BrainDir: dir, Default: "web-clip"}
tests := []struct {
name string
dir string
}{
{"Kelvin sign lowercases to an ASCII k", "Kubernetes"},
{"cyrillic lookalike", "h\u043emelab"},
{"retired layout name: sources", "sources"},
{"retired layout name: concepts", "concepts"},
{"retired layout name: entities", "entities"},
{"wiki", "wiki"},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
d := r.Resolve(context.Background(), wing.Note{Dir: tt.dir, Text: "x"})
assert.Equal(t, wing.Exception, d.Source)
assert.Empty(t, d.Wing, "never proposed as a wing")
})
}
t.Run("plain ASCII case folding still works", func(t *testing.T) {
d := r.Resolve(context.Background(), wing.Note{Dir: "KubernetEs", Text: "x"})
assert.Equal(t, wing.Explicit, d.Source)
assert.Equal(t, "kubernetes", d.Wing)
})
}
func TestNewRouter_AReservedDefaultIsRefused(t *testing.T) {
_, err := wing.NewRouter(routerBrain(t), "sources", "")
assert.Error(t, err)
}
// From the second review of #211: the multi-word, \s and \b patterns an operator
// would actually write, and the next tier of evasions.
func TestRouter_ClientMarkerHandlesRealisticPatternsAndHarderEvasions(t *testing.T) {
tests := []struct {
name, pattern, text string
}{
{"space in pattern vs NBSP", `acme corp`, "about acme\u00a0corp today"},
{"space in pattern vs two spaces", `acme corp`, "about acme corp today"},
{"space in pattern vs newline", `acme corp`, "about acme\ncorp today"},
{"backslash-s pattern vs NBSP", `acme\s+corp`, "about acme\u00a0corp today"},
{"word boundary vs a zero-width char inside", `\bacme\b`, "the ac\u200bme corp"},
{"dash pattern vs a soft hyphen as the dash", `acme-client`, "acme\u00adclient"},
{"cyrillic a", `acme-client`, "\u0430cme-client"},
{"cyrillic e", `acme-client`, "acm\u0435-client"},
{"cyrillic o and c", `coop`, "c\u043e\u043ep"},
{"combining acute", `acme-client`, "a\u0301cme-client"},
{"precomposed accent", `acme-client`, "\u00e1cme-client"},
{"hangul filler", `acme-client`, "ac\u3164me-client"},
{"halfwidth hangul filler", `acme-client`, "ac\uffa0me-client"},
{"braille blank", `acme-client`, "ac\u2800me-client"},
{"grapheme joiner", `acme-client`, "ac\u034fme-client"},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
r, err := wing.NewRouter(routerBrain(t), "web-clip", tt.pattern)
assert.NoError(t, err)
assert.Equal(t, wing.Exception, r.Resolve(context.Background(), wing.Note{Text: tt.text}).Source, "%q should be caught by %q", tt.text, tt.pattern)
})
}
t.Run("ordinary text is not caught by a multi-word pattern", func(t *testing.T) {
r, _ := wing.NewRouter(routerBrain(t), "web-clip", `acme corp`)
assert.Equal(t, wing.Default, r.Resolve(context.Background(), wing.Note{Text: "acme is not corp, and corp is not acme"}).Source)
})
}
// The folding allocates several times the text, so a large note is checked in
// bounded chunks. A marker that straddles a chunk edge must still be found.
func TestRouter_ClientMarkerIsFoundAcrossAChunkBoundary(t *testing.T) {
r, err := wing.NewRouter(routerBrain(t), "web-clip", `acme-client`)
assert.NoError(t, err)
r.FilterChunk = 64
for _, at := range []int{0, 30, 55, 58, 62, 64, 70, 120, 190} {
text := strings.Repeat("x", at) + "acme-client" + strings.Repeat("y", 200)
assert.Equal(t, wing.Exception, r.Resolve(context.Background(), wing.Note{Text: text}).Source, "marker at offset %d was missed", at)
}
clean := strings.Repeat("lorem ipsum ", 100)
assert.Equal(t, wing.Default, r.Resolve(context.Background(), wing.Note{Text: clean}).Source)
}
func TestRouter_ClientMarkerChunkingDoesNotSplitAMultiByteRune(t *testing.T) {
r, err := wing.NewRouter(routerBrain(t), "web-clip", `acme-client`)
assert.NoError(t, err)
r.FilterChunk = 65 // odd, over two-byte runes: every boundary falls inside a rune unless it is moved
for pad := 0; pad < 8; pad++ {
text := strings.Repeat("\u00e9", 40+pad) + "acme-client" + strings.Repeat("\u00e9", 40)
assert.Equal(t, wing.Exception, r.Resolve(context.Background(), wing.Note{Text: text}).Source, "pad %d", pad)
}
clean := strings.Repeat("\u00e9", 300)
assert.Equal(t, wing.Default, r.Resolve(context.Background(), wing.Note{Text: clean}).Source, "no panic or false match on a text of 2-byte runes")
}