Data tests and sources with tags do not appear in project documentation

[clrcrl]

Steps to reproduce

1. Add a data test to your project:

$ cat tests/assert_whatever.sql
select 1
from  {{ ref('customers') }}
where false

2. Generate docs dbt docs generate
3. Serve docs, dbt docs serve
4. Data test appears in DAG

5. Amend data test to include a config block

$ cat tests/assert_whatever.sql
{{
    config(
        tags='foo'
    )
}}
select 1
from    {{ ref('customers') }}
where false

6. Regenerate docs

Expected behavior

Data test should still appear in project DAG

Actual behavior

Data test does not appear in project DAG

System information

The output of dbt --version:

installed version: 0.18.1-rc1
   latest version: 0.18.0

Your version of dbt is ahead of the latest release!

Plugins:
  - bigquery: 0.18.1rc1
  - snowflake: 0.18.1rc1
  - redshift: 0.18.1rc1
  - postgres: 0.18.1rc1

Reproduced on 0.17.2 as well

[jtcohen6]

Nice catch. I reproduced locally and confirmed that the data test is still populated to the manifest all right, so I think this is a dbt-docs bug.

[ijoel92]

Hi all,

I mentioned this issue in the dbt slack channel https://getdbt.slack.com/archives/C2JRRQDTL/p1603290085056200

Same issue is happening when adding a tag to the sources.

[tpolman]

I'm experiencing the same when adding tags to sources.

If I edit the corresponding line in the generated target/manifest.json the lineage graph starts showing the node again.

# manifest.json under sources ->> source...dwh.source_name
# from
      "tags": [
        "tag_name"
      ],
# to 
      "tags": [],```

[jtcohen6]

The sources piece of this was resolved in #139, which will be included in v0.19.0 (and was included in v0.19.0-b1). I think the fix for data tests should be fairly straightforward.