test(e2e): code backfill on namespace enablement

*** Settings ***

Documentation       Verify code-indexing backfill: create a namespace with Knowledge Graph

...                 disabled, create two projects under it, push ruby and java fixtures, then

...                 enable the namespace and confirm NamespaceCodeBackfillDispatcher resolves

...                 every pre-existing project via project_namespace_traversal_paths and

...                 dispatches code indexing for each — without any additional pushes. Uses a

...                 simple File node-presence check per project; per-language correctness is

...                 covered by 03_code_indexing.robot.

Resource            gitlab.resource

Resource            orbit.resource

Resource            git.resource

*** Variables ***

${RUBY_FIXTURE_DIR}     /fixtures/ruby/weather-app

${JAVA_FIXTURE_DIR}     /fixtures/java/weather-app

# Expected fixture cardinalities (must match e2e/fixtures/*/weather-app/).

${RUBY_FILE_COUNT}      ${5}

${JAVA_FILE_COUNT}      ${6}

*** Test Cases ***

Namespace With Code Is Prepared Without Knowledge Graph Enabled

    [Documentation]    Create a dedicated group with KG disabled, create ruby- and java-weather

    ...                projects under it, and push their fixtures. Leaving KG disabled ensures

    ...                the upcoming enablement is the only trigger for code indexing — any

    ...                File nodes observed afterward must come from the backfill path.

    [Tags]    code-backfill

    ${suffix}=    Random Suffix

    ${namespace_name}=    Set Variable    e2e-backfill-${suffix}

    ${group}=    Create Group    ${namespace_name}

    Set Suite Variable    ${BACKFILL_NAMESPACE_ID}    ${group["id"]}

    Set Suite Variable    ${BACKFILL_NAMESPACE_NAME}    ${namespace_name}

    ${ruby_name}=    Set Variable    backfill-ruby-${suffix}

    ${ruby}=    Create Project    ${ruby_name}    ${BACKFILL_NAMESPACE_ID}

    Push Fixture To Project    ${ruby}    ${RUBY_FIXTURE_DIR}

    Set Suite Variable    ${BACKFILL_RUBY_PROJECT}    ${ruby}

    ${java_name}=    Set Variable    backfill-java-${suffix}

    ${java}=    Create Project    ${java_name}    ${BACKFILL_NAMESPACE_ID}

    Push Fixture To Project    ${java}    ${JAVA_FIXTURE_DIR}

    Set Suite Variable    ${BACKFILL_JAVA_PROJECT}    ${java}

Enabling Knowledge Graph Backfills Code For Existing Projects

    [Documentation]    Flip Knowledge Graph on for the prepared namespace. The

    ...                knowledge_graph_enabled_namespaces CDC event must reach

    ...                NamespaceCodeBackfillDispatcher, which resolves every project under the

    ...                namespace's traversal path and publishes a CodeIndexingTaskRequest per

    ...                project. Both projects' File nodes should appear with the expected

    ...                fixture cardinalities, proving the backfill path ran end-to-end.

    [Tags]    code-backfill

    Enable Knowledge Graph    ${BACKFILL_NAMESPACE_ID}

    Wait For Node Indexed    Group    ${BACKFILL_NAMESPACE_ID}    ${BACKFILL_NAMESPACE_NAME}

    ...    timeout=60s

    ${ruby_pid}=    Set Variable    ${BACKFILL_RUBY_PROJECT}[id]

    ${java_pid}=    Set Variable    ${BACKFILL_JAVA_PROJECT}[id]

    File Count For Project Is    ${ruby_pid}    ${RUBY_FILE_COUNT}    timeout=60s

    File Count For Project Is    ${java_pid}    ${JAVA_FILE_COUNT}    timeout=60s