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1defmodule PlugOpenTracingTest do
2 use ExUnit.Case, async: true
3 use Plug.Test
4 alias Plug.Conn.Status
5
6 test "missing trace header results in new span" do
7 connection = conn(:get, "/test-path")
8 response = TestApp.call(connection, [])
9
10 assert response.status == Status.code(:ok)
11 assert response.resp_body != ""
12 end
13
14 test "bad trace header results in new span" do
15 connection = conn(:get, "/test-path") |> put_req_header("uber-trace-id", "1234")
16 response = TestApp.call(connection, [])
17
18 assert response.status == Status.code(:ok)
19 assert response.resp_body != ""
20 end
21
22 test "valid trace header results in span with those ids" do
23 connection = conn(:get, "/test-path") |> put_req_header("uber-trace-id", "6a5c63925e01051b:150b1b1adcde6f4:6a5c63925e01051b:1")
24 response = TestApp.call(connection, [])
25
26 assert response.status == Status.code(:ok)
27 assert response.resp_body == "7664110146171241755"
28 end
29
30 test "invalid hex trace header results in usable span" do
31 connection = conn(:get, "/test-path") |> put_req_header("uber-trace-id", "6a5x63925t01051b:150b1p1adcdq6f4:6a5c63925e01051b:1")
32 response = TestApp.call(connection, [])
33
34 assert response.status == Status.code(:ok)
35 assert response.resp_body == "1701"
36 end
37
38 test "empty trace header results in new span" do
39 connection = conn(:get, "/test-path") |> put_req_header("uber-trace-id", "")
40 response = TestApp.call(connection, [])
41
42 assert response.status == Status.code(:ok)
43 assert response.resp_body != ""
44 end
45
46 test "just some colons results in new span" do
47 connection = conn(:get, "/test-path") |> put_req_header("uber-trace-id", "::::")
48 response = TestApp.call(connection, [])
49
50 assert response.status == Status.code(:ok)
51 assert response.resp_body != ""
52 end
53end