You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: extendable_context_tests.rs
    path of file: ./repos/deep_causality/deep_causality/tests/types/context_types/context_graph
    
    the code of the file until where you have to start completion: // SPDX-License-Identifier: MIT
// Copyright (c) "2023" . The DeepCausality Authors. All Rights Reserved.

use deep_causality::prelude::*;

fn get_context<'l>() -> BaseContext<'l> {
    let id = 1;
    let name = "base context";
    let capacity = 10; // adjust as needed
    Context::with_capacity(id, name, capacity)
}

#[test]
fn test_new() {
    let id = 1;
    let context = get_context();
    asser
    
fn test_extra_ctx_contains_edge_err() {
    let id = 1;
    let mut context = get_context();
    assert_eq!(context.id(), id);

    let capacity = 100;
    let default = true;

    let ctx_id = context.extra_ctx_add_new(capacity, default);
    assert_eq!(ctx_id, 1);

    let exists = context.extra_ctx_check_exists(ctx_id);
    assert!(exists);

    let current_id = context.extra_ctx_get_current_id();
    assert_eq!(current_id, ctx_id);

    let c_1 = Contextoid::new(id, ContextoidType::Root(Root::new(id)));
    let res = context.extra_ctx_add_node(c_1);
    assert!(res.is_ok());

    let root_id = res.unwrap();
    assert_eq!(root_id, 0);

    let exists = context.extra_ctx_contains_node(root_id);
    assert!(exists);

    let t_id = 12;
    let t_time_scale = TimeScale::Month;
    let t_time_unit = 12;
    let tempoid = Time::new(t_id, t_time_scale, t_time_unit);

    let id = 2;
    let c_2 = Contextoid::new(id, ContextoidType::Tempoid(tempoid));
    let res = context.extra_ctx_add_node(c_2);
    assert!(res.is_ok());

    let node_id = res.unwrap();
    assert_eq!(node_id, 1);

    let exists = context.extra_ctx_contains_node(node_id);
    assert!(exists);

    let res = context.extra_ctx_add_edge(root_id, node_id, RelationKind::Temporal);
    assert!(res.is_ok());

    let res = context.extra_ctx_contains_edge(root_id, node_id);
    assert!(res);

    let no_id_a = 23;
    let no_id_b = 42;

    // First node does not exist
    let exists = context.extra_ctx_contains_edge(no_id_a, node_id);
    assert!(!exists);

    // Second node does not exist
    let exists = context.extra_ctx_contains_edge(root_id, no_id_b);
    assert!(!exists);

    // Both nodes do not exist
    let exists = context.extra_ctx_contains_edge(no_id_a, no_id_b);
    assert!(!exists);
}