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Integration tests for EKS service emulator.
Tests cluster CRUD, nodegroup CRUD, tags, and CloudFormation provisioning.
k3s Docker container tests require Docker socket access.
"""
import json
import time
import uuid
import pytest
import boto3
from botocore.exceptions import ClientError
ENDPOINT = "http://localhost:4566"
REGION = "us-east-1"
@pytest.fixture(scope="module")
def eks():
return boto3.client("eks", endpoint_url=ENDPOINT,
aws_access_key_id="test", aws_secret_access_key="test",
region_name=REGION)
@pytest.fixture(scope="module")
def cfn():
return boto3.client("cloudformation", endpoint_url=ENDPOINT,
aws_access_key_id="test", aws_secret_access_key="test",
region_name=REGION)
def _uid():
return uuid.uuid4().hex[:8]
# ---------------------------------------------------------------------------
# Cluster CRUD
# ---------------------------------------------------------------------------
def test_eks_create_describe_delete_cluster(eks):
"""Test EKS API contract: create → describe → delete → gone."""
name = f"test-cluster-{_uid()}"
resp = eks.create_cluster(
name=name,
version="1.30",
roleArn="arn:aws:iam::000000000000:role/eks-role",
resourcesVpcConfig={"subnetIds": ["subnet-1", "subnet-2"]},
)
cluster = resp["cluster"]
assert cluster["name"] == name
assert cluster["status"] in ("CREATING", "ACTIVE")
assert cluster["version"] == "1.30"
assert "arn" in cluster
assert f"cluster/{name}" in cluster["arn"]
assert "endpoint" in cluster
assert "certificateAuthority" in cluster
assert "identity" in cluster
assert "oidc" in cluster["identity"]
# Describe — wait for background thread to finish.
# In CI the first describe can transiently fail; retry with backoff.
resp = None
for attempt in range(60):
try:
resp = eks.describe_cluster(name=name)
if resp["cluster"]["status"] == "ACTIVE":
break
except ClientError as e:
if e.response["Error"]["Code"] != "ResourceNotFoundException":
raise
time.sleep(0.5)
assert resp is not None, f"Cluster {name} never became describable after 30s"
assert resp["cluster"]["name"] == name
assert resp["cluster"]["status"] in ("ACTIVE", "CREATING")
# Delete
resp = eks.delete_cluster(name=name)
assert resp["cluster"]["name"] == name
# Verify gone
with pytest.raises(ClientError) as exc:
eks.describe_cluster(name=name)
assert exc.value.response["Error"]["Code"] == "ResourceNotFoundException"
def test_eks_create_duplicate_cluster(eks):
name = f"dup-cluster-{_uid()}"
eks.create_cluster(name=name, roleArn="arn:aws:iam::000000000000:role/r",
resourcesVpcConfig={})
with pytest.raises(ClientError) as exc:
eks.create_cluster(name=name, roleArn="arn:aws:iam::000000000000:role/r",
resourcesVpcConfig={})
assert exc.value.response["Error"]["Code"] == "ResourceInUseException"
eks.delete_cluster(name=name)
def test_eks_list_clusters(eks):
name = f"list-cluster-{_uid()}"
eks.create_cluster(name=name, roleArn="arn:aws:iam::000000000000:role/r",
resourcesVpcConfig={})
resp = eks.list_clusters()
assert name in resp["clusters"]
eks.delete_cluster(name=name)
def test_eks_delete_nonexistent_cluster(eks):
with pytest.raises(ClientError) as exc:
eks.delete_cluster(name="nonexistent-cluster-xyz")
assert exc.value.response["Error"]["Code"] == "ResourceNotFoundException"
# ---------------------------------------------------------------------------
# Nodegroup CRUD
# ---------------------------------------------------------------------------
def test_eks_create_describe_delete_nodegroup(eks):
cluster = f"ng-cluster-{_uid()}"
eks.create_cluster(name=cluster, roleArn="arn:aws:iam::000000000000:role/r",
resourcesVpcConfig={})
ng_name = f"ng-{_uid()}"
resp = eks.create_nodegroup(
clusterName=cluster,
nodegroupName=ng_name,
scalingConfig={"minSize": 1, "maxSize": 3, "desiredSize": 2},
instanceTypes=["t3.large"],
nodeRole="arn:aws:iam::000000000000:role/node-role",
subnets=["subnet-1"],
diskSize=50,
)
ng = resp["nodegroup"]
assert ng["nodegroupName"] == ng_name
assert ng["clusterName"] == cluster
assert ng["status"] == "ACTIVE"
assert ng["scalingConfig"]["desiredSize"] == 2
assert ng["instanceTypes"] == ["t3.large"]
assert ng["diskSize"] == 50
assert "nodegroupArn" in ng
# Describe
resp = eks.describe_nodegroup(clusterName=cluster, nodegroupName=ng_name)
assert resp["nodegroup"]["nodegroupName"] == ng_name
# List
resp = eks.list_nodegroups(clusterName=cluster)
assert ng_name in resp["nodegroups"]
# Delete
resp = eks.delete_nodegroup(clusterName=cluster, nodegroupName=ng_name)
assert resp["nodegroup"]["status"] == "DELETING"
# Verify gone
with pytest.raises(ClientError) as exc:
eks.describe_nodegroup(clusterName=cluster, nodegroupName=ng_name)
assert exc.value.response["Error"]["Code"] == "ResourceNotFoundException"
eks.delete_cluster(name=cluster)
def test_eks_nodegroup_nonexistent_cluster(eks):
with pytest.raises(ClientError) as exc:
eks.create_nodegroup(clusterName="no-such-cluster", nodegroupName="ng1",
nodeRole="arn:aws:iam::000000000000:role/r",
subnets=["subnet-1"])
assert exc.value.response["Error"]["Code"] == "ResourceNotFoundException"
def test_eks_delete_cluster_cascades_nodegroups(eks):
cluster = f"cascade-{_uid()}"
eks.create_cluster(name=cluster, roleArn="arn:aws:iam::000000000000:role/r",
resourcesVpcConfig={})
for i in range(3):
eks.create_nodegroup(clusterName=cluster, nodegroupName=f"ng-{i}",
nodeRole="arn:aws:iam::000000000000:role/r",
subnets=["subnet-1"])
resp = eks.list_nodegroups(clusterName=cluster)
assert len(resp["nodegroups"]) == 3
eks.delete_cluster(name=cluster)
with pytest.raises(ClientError):
eks.list_nodegroups(clusterName=cluster)
# ---------------------------------------------------------------------------
# Tags
# ---------------------------------------------------------------------------
def test_eks_tag_cluster(eks):
name = f"tag-cluster-{_uid()}"
eks.create_cluster(name=name, roleArn="arn:aws:iam::000000000000:role/r",
resourcesVpcConfig={}, tags={"env": "test"})
arn = eks.describe_cluster(name=name)["cluster"]["arn"]
resp = eks.list_tags_for_resource(resourceArn=arn)
assert resp["tags"]["env"] == "test"
eks.tag_resource(resourceArn=arn, tags={"team": "platform"})
resp = eks.list_tags_for_resource(resourceArn=arn)
assert resp["tags"]["team"] == "platform"
assert resp["tags"]["env"] == "test"
eks.untag_resource(resourceArn=arn, tagKeys=["env"])
resp = eks.list_tags_for_resource(resourceArn=arn)
assert "env" not in resp["tags"]
assert resp["tags"]["team"] == "platform"
eks.delete_cluster(name=name)
# ---------------------------------------------------------------------------
# CloudFormation
# ---------------------------------------------------------------------------
def test_eks_cfn_cluster(cfn, eks):
uid = _uid()
cluster_name = f"cfn-eks-{uid}"
template = json.dumps({
"AWSTemplateFormatVersion": "2010-09-09",
"Resources": {
"Cluster": {
"Type": "AWS::EKS::Cluster",
"Properties": {
"Name": cluster_name,
"Version": "1.30",
"RoleArn": "arn:aws:iam::000000000000:role/eks-role",
"ResourcesVpcConfig": {
"subnetIds": ["subnet-1", "subnet-2"],
},
},
},
},
})
stack_name = f"eks-stack-{uid}"
cfn.create_stack(StackName=stack_name, TemplateBody=template)
# Poll for stack — deploy runs as an async task
stack = None
for _ in range(30):
try:
stack = cfn.describe_stacks(StackName=stack_name)["Stacks"][0]
if stack["StackStatus"] not in ("CREATE_IN_PROGRESS",):
break
except Exception:
pass
time.sleep(1)
assert stack is not None, f"Stack {stack_name} never appeared"
assert stack["StackStatus"] == "CREATE_COMPLETE"
resp = eks.describe_cluster(name=cluster_name)
assert resp["cluster"]["name"] == cluster_name
cfn.delete_stack(StackName=stack_name)
time.sleep(2)
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