How can you verify if a certain value is present in a dictionary using Ansible?

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There are several ways to verify if a certain value is present in a dictionary using Ansible:

1. Using the json_query filter: This filter allows you to extract specific values from a JSON object using JMESPath expressions. You can use this filter to check if a certain value is present in a dictionary. For example:

   - hosts: localhost
    vars:
      my_dict:
        key1: value1
        key2: value2
        key3: value3
    tasks:
      - name: Check if value exists in dict
        assert:
          that: my_dict | json_query("[*].value | contains(`value2`)")
   

2. Using the default filter: This filter returns a default value if the original value is undefined or false. You can use this filter to check if a certain value is present in a dictionary. For example:

   - hosts: localhost
    vars:
      my_dict:
        key1: value1
        key2: value2
        key3: value3
    tasks:
      - name: Check if value exists in dict
        assert:
          that: my_dict.key2 is defined and my_dict.key2 | default("") == "value2"
   

3. Using the contains method: This method is available in Jinja2 and allows you to check if a certain value is present in a dictionary. For example:

   - hosts: localhost
    vars:
      my_dict:
        key1: value1
        key2: value2
        key3: value3
    tasks:
      - name: Check if value exists in dict
        assert:
          that: "value2" in my_dict.values()