Migrated from neostr-brainstorm.

Added unit tests.

neo4j.go

@@ -0,0 +1,20 @@
+package heartwood
+
+import (
+	"context"
+	"github.com/neo4j/neo4j-go-driver/v6/neo4j"
+)
+
+// ConnectNeo4j creates a new Neo4j driver and verifies its connectivity.
+func ConnectNeo4j(ctx context.Context, uri, user, password string) (neo4j.Driver, error) {
+	driver, err := neo4j.NewDriver(
+		uri,
+		neo4j.BasicAuth(user, password, ""))
+
+	err = driver.VerifyConnectivity(ctx)
+	if err != nil {
+		return driver, err
+	}
+
+	return driver, nil
+}