chore: import upstream snapshot with attribution

internal/parser/languages/sql_test.go

@@ -0,0 +1,77 @@
+package languages
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"github.com/zzet/gortex/internal/graph"
+)
+
+func TestSQLExtractor_CreateTable(t *testing.T) {
+	src := []byte(`CREATE TABLE users (
+    id INTEGER PRIMARY KEY,
+    name TEXT NOT NULL,
+    email TEXT UNIQUE
+);
+`)
+	e := NewSQLExtractor()
+	result, err := e.Extract("schema.sql", src)
+	require.NoError(t, err)
+
+	types := nodesOfKind(result.Nodes, graph.KindType)
+	require.Len(t, types, 1)
+	assert.Equal(t, "users", types[0].Name)
+
+	// Columns as variables with EdgeMemberOf.
+	vars := nodesOfKind(result.Nodes, graph.KindVariable)
+	assert.Len(t, vars, 3) // id, name, email
+
+	memberEdges := edgesOfKind(result.Edges, graph.EdgeMemberOf)
+	assert.Len(t, memberEdges, 3)
+	for _, e := range memberEdges {
+		assert.Equal(t, "schema.sql::users", e.To)
+	}
+}
+
+func TestSQLExtractor_MultipleTables(t *testing.T) {
+	src := []byte(`CREATE TABLE users (
+    id INTEGER PRIMARY KEY
+);
+
+CREATE TABLE orders (
+    id INTEGER PRIMARY KEY,
+    user_id INTEGER
+);
+`)
+	e := NewSQLExtractor()
+	result, err := e.Extract("schema.sql", src)
+	require.NoError(t, err)
+
+	types := nodesOfKind(result.Nodes, graph.KindType)
+	assert.Len(t, types, 2)
+
+	names := make([]string, len(types))
+	for i, t := range types {
+		names[i] = t.Name
+	}
+	assert.Contains(t, names, "users")
+	assert.Contains(t, names, "orders")
+}
+
+func TestSQLExtractor_FileNode(t *testing.T) {
+	src := []byte(`CREATE TABLE t (id INT);`)
+	e := NewSQLExtractor()
+	result, err := e.Extract("test.sql", src)
+	require.NoError(t, err)
+
+	files := nodesOfKind(result.Nodes, graph.KindFile)
+	require.Len(t, files, 1)
+	assert.Equal(t, "test.sql", files[0].Name)
+}
+
+func TestSQLExtractor_Extensions(t *testing.T) {
+	e := NewSQLExtractor()
+	assert.Equal(t, "sql", e.Language())
+	assert.Equal(t, []string{".sql"}, e.Extensions())
+}