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cleveragents-core/features/devcontainer_handler.feature
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feat(resource): add devcontainer resource type and auto-discovery handler
Added three new built-in resource types: container-instance,
devcontainer-instance, and devcontainer-file. The devcontainer-instance
type inherits from container-instance per ADR-042 and is auto-discovered
when git-checkout or fs-directory resources contain .devcontainer/
directories per ADR-043.

Implementation includes:
- DevcontainerHandler extending BaseResourceHandler with snapshot strategy
- Auto-discovery module scanning .devcontainer/devcontainer.json and
  root .devcontainer.json with JSON validation
- CLI support for devcontainer-instance and container-instance via
  agents resource add with --path and --image flags
- Behave feature with 22 scenarios covering manual registration,
  auto-discovery, invalid JSON handling, and protocol conformance
- Robot integration tests with 10 test cases for CLI round-trip and
  DAG hierarchy validation
- ASV benchmarks measuring discovery throughput with varying subdirectory
  counts, handler resolver cache performance, and result construction
- Reference documentation at docs/reference/devcontainer_resources.md

ISSUES CLOSED: #511
2026-03-02 22:09:37 -05:00

114 lines
5.4 KiB
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Feature: Devcontainer Resource Handler
As a CleverAgents developer
I want devcontainer resources to be auto-discovered and manually registered
So that devcontainer environments integrate into the resource model
# Manual registration
Scenario: Register devcontainer-instance manually
Given a temporary directory with a valid devcontainer.json
When I create a devcontainer-instance resource at that path
Then the resource should have type "devcontainer-instance"
And the resource should have a non-empty resource_id
Scenario: Register container-instance manually
When I create a container-instance resource with image "ubuntu:latest"
Then the container resource should have type "container-instance"
# ── Auto-discovery from git resource ───────────────────────
Scenario: Auto-discover devcontainer from git-checkout resource
Given a temporary directory simulating a git checkout
And the directory has a .devcontainer/devcontainer.json file
When I run devcontainer discovery on the directory as "git-checkout"
Then discovery should return 1 result
And the discovered config path should end with "devcontainer.json"
Scenario: Auto-discover root devcontainer.json from git-checkout
Given a temporary directory simulating a git checkout
And the directory has a root .devcontainer.json file
When I run devcontainer discovery on the directory as "git-checkout"
Then discovery should return 1 result
Scenario: Auto-discover both devcontainer locations
Given a temporary directory simulating a git checkout
And the directory has a .devcontainer/devcontainer.json file
And the directory has a root .devcontainer.json file
When I run devcontainer discovery on the directory as "git-checkout"
Then discovery should return 2 results
# ── Auto-discovery from filesystem resource ─────────────────
Scenario: Auto-discover devcontainer from fs-directory resource
Given a temporary directory simulating a filesystem mount
And the directory has a .devcontainer/devcontainer.json file
When I run devcontainer discovery on the directory as "fs-directory"
Then discovery should return 1 result
Scenario: No discovery for non-trigger resource types
Given a temporary directory simulating a filesystem mount
And the directory has a .devcontainer/devcontainer.json file
When I run devcontainer discovery on the directory as "fs-file"
Then discovery should return 0 results
# ── Invalid devcontainer.json handling ──────────────────────
Scenario: Skip invalid JSON in devcontainer.json
Given a temporary directory with an invalid devcontainer.json
When I run devcontainer discovery on the directory as "git-checkout"
Then discovery should return 0 results
Scenario: Skip non-object JSON in devcontainer.json
Given a temporary directory with a non-object devcontainer.json
When I run devcontainer discovery on the directory as "git-checkout"
Then discovery should return 0 results
Scenario: Handle missing devcontainer directory gracefully
Given a temporary directory with no devcontainer configuration
When I run devcontainer discovery on the directory as "git-checkout"
Then discovery should return 0 results
# ── Resource tree display ──────────────────────────────────
Scenario: Devcontainer types appear in resource type list
Given the built-in resource type registry
When I list all built-in type names
Then the type list should contain "devcontainer-instance"
And the type list should contain "devcontainer-file"
And the type list should contain "container-instance"
# ── Handler protocol conformance ───────────────────────────
Scenario: DevcontainerHandler satisfies ResourceHandler protocol
When I instantiate DevcontainerHandler
Then it should satisfy the ResourceHandler protocol
Scenario: DevcontainerHandler has correct default strategy
When I instantiate DevcontainerHandler
Then its default strategy should be "snapshot"
Scenario: DevcontainerHandler has correct type label
When I instantiate DevcontainerHandler
Then its type label should be "devcontainer"
# ── Discovery result validation ────────────────────────────
Scenario: Discovery result requires valid config_path
When I create a discovery result with valid parameters
Then the result should have a config_path attribute
Scenario: Discovery result rejects empty parent_location
When I create a discovery result with empty parent_location
Then it should raise a ValueError
# ── is_trigger_type checks ────────────────────────────────
Scenario: git-checkout is a trigger type
Then "git-checkout" should be a trigger type
Scenario: fs-directory is a trigger type
Then "fs-directory" should be a trigger type
Scenario: devcontainer-instance is not a trigger type
Then "devcontainer-instance" should not be a trigger type