93 lines
2.6 KiB
Go
93 lines
2.6 KiB
Go
package vector
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import (
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"context"
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"errors"
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"os"
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"testing"
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)
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func TestNewPG_InvalidURL_异常(t *testing.T) {
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t.Parallel()
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if _, err := NewPG(context.Background(), " ", 4, testLogger()); !errors.Is(err, ErrInvalidPGURL) {
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t.Fatalf("NewPG(blank url) err = %v, want ErrInvalidPGURL", err)
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}
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}
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func TestNewPG_InvalidDim_异常(t *testing.T) {
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t.Parallel()
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// dim is validated before any connection is opened, so no network I/O here.
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if _, err := NewPG(context.Background(), "postgres://host/db", 0, testLogger()); !errors.Is(err, ErrInvalidDim) {
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t.Fatalf("NewPG(dim 0) err = %v, want ErrInvalidDim", err)
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}
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}
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func TestPGVectorLiteral(t *testing.T) {
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t.Parallel()
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tests := []struct {
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name string
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v Vector
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want string
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}{
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{name: "single", v: Vector{1}, want: "[1]"},
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{name: "three", v: Vector{1.5, 2, -0.25}, want: "[1.5,2,-0.25]"},
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{name: "empty", v: Vector{}, want: "[]"},
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}
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for _, tt := range tests {
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tt := tt
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t.Run(tt.name, func(t *testing.T) {
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t.Parallel()
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if got := pgVectorLiteral(tt.v); got != tt.want {
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t.Fatalf("pgVectorLiteral(%v) = %q, want %q", tt.v, got, tt.want)
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}
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})
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}
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}
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// TestPG_RequiresEnv runs a real PostgreSQL+pgvector round trip when DB_PG_URL
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// is set, and skips otherwise. There is no PG server in this environment by
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// default, so the pgvector-backed Add/Search path is validated end-to-end only
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// when the operator supplies a live database with the pgvector extension. The
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// SQLite path (the default) is fully covered by the sqlite_test.go suite.
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func TestPG_RequiresEnv(t *testing.T) {
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url := os.Getenv("DB_PG_URL")
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if url == "" {
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t.Skip("DB_PG_URL not set; skipping real PostgreSQL+pgvector integration test")
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}
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ctx := context.Background()
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idx, err := NewPG(ctx, url, 4, testLogger())
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if err != nil {
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t.Fatalf("NewPG: %v", err)
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}
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idx.withEmbedder(&mockEmbedder{dim: 4})
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defer func() { _ = idx.Close() }()
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if err := idx.Add(ctx, "a", Vector{1, 0, 0, 0}); err != nil {
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t.Fatalf("Add a: %v", err)
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}
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if err := idx.Add(ctx, "b", Vector{0, 1, 0, 0}); err != nil {
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t.Fatalf("Add b: %v", err)
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}
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hits, err := idx.Search(ctx, Vector{1, 0, 0, 0}, 1)
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if err != nil {
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t.Fatalf("Search: %v", err)
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}
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if len(hits) != 1 || hits[0].ID != "a" {
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t.Fatalf("pg top hit = %+v, want single a", hits)
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}
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if hits[0].Score < 0.99 {
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t.Fatalf("pg a score = %v, want ~1.0", hits[0].Score)
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}
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// The embedder is wired, so Index.Embed is usable.
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vs, err := idx.Embed(ctx, []string{"hello"})
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if err != nil {
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t.Fatalf("Embed: %v", err)
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}
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if len(vs) != 1 || len(vs[0]) != 4 {
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t.Fatalf("Embed => %d vectors, want one 4-dim", len(vs))
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}
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}
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