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End-to-End Placement Workflow API Integration Tests.
Verifies complete pipeline: extraction -> review -> eligibility -> schedule -> what-if -> publish -> live enforcement -> replay.
"""
from __future__ import annotations
import datetime
from collections.abc import Generator
import pytest
from fastapi.testclient import TestClient
from sqlalchemy import select
from backend.app.api.main import app, seed_default_accounts
from backend.app.storage.database import SessionLocal
from backend.app.storage.models.entities import CompanyModel, DriveModel, StudentModel
@pytest.fixture
def client() -> Generator[TestClient, None, None]:
seed_default_accounts()
with TestClient(app) as c:
yield c
@pytest.fixture
def auth_officer_headers(client: TestClient) -> dict[str, str]:
login_res = client.post("/api/auth/login", json={"username": "officer", "password": "officer123"})
assert login_res.status_code == 200
csrf = login_res.json()["csrf_token"]
return {"X-CSRF-Token": csrf}
@pytest.fixture
def setup_pipeline_data() -> tuple[str, str, str]:
db = SessionLocal()
# 0. Seed Company
comp = db.execute(select(CompanyModel).where(CompanyModel.id == "comp_pipe")).scalar_one_or_none()
if not comp:
comp = CompanyModel(
id="comp_pipe",
name="Pipeline Systems",
tier="Tier 1",
)
db.add(comp)
# 1. Seed Drive
d = db.execute(select(DriveModel).where(DriveModel.id == "drv_pipe_01")).scalar_one_or_none()
if not d:
d = DriveModel(
id="drv_pipe_01",
company_id="comp_pipe",
company_name="Pipeline Systems",
drive_date=datetime.date(2026, 11, 20),
mode="on_campus",
status="draft",
ctc_lpa=16.0,
version=1,
)
db.add(d)
else:
d.version = 1
d.status = "draft"
# 2. Seed Student 1 (eligible: 8.5 CGPA, CSE)
s1 = db.execute(select(StudentModel).where(StudentModel.roll_no == "PIPE_001")).scalar_one_or_none()
if not s1:
s1 = StudentModel(
id="stu_pipe_01",
roll_no="PIPE_001",
name="Rohit Pipeline",
email="rohit.pipe@college.edu",
branch="CSE",
program="B.Tech",
cgpa=8.5,
tenth_percentage=85.0,
date_of_birth=datetime.date(2004, 1, 1),
)
db.add(s1)
# 3. Seed Student 2 (ineligible: 6.5 CGPA, Civil)
s2 = db.execute(select(StudentModel).where(StudentModel.roll_no == "PIPE_002")).scalar_one_or_none()
if not s2:
s2 = StudentModel(
id="stu_pipe_02",
roll_no="PIPE_002",
name="Siddharth Pipe",
email="sid.pipe@college.edu",
branch="Civil Engineering",
program="B.Tech",
cgpa=6.5,
tenth_percentage=70.0,
date_of_birth=datetime.date(2004, 2, 2),
)
db.add(s2)
db.commit()
res = (str(d.id), str(s1.id), str(s2.id))
db.close()
return res
def test_requirement_extraction_api(
client: TestClient,
auth_officer_headers: dict[str, str],
) -> None:
text = (
"Uber is hiring Software Engineers for campus 2026. "
"Compensation package: 35 LPA. Minimum CGPA required is 8.0 with no standing backlogs. "
"Eligible branches: CSE and IT only."
)
res = client.post(
"/api/extract/parse",
data={"text": text, "company_name": "Uber"},
headers=auth_officer_headers,
)
assert res.status_code == 200
data = res.json()
assert data["company_name"] == "Uber"
assert data["ctc_lpa"] == 35.0
assert data["fields"]["cgpa_min"]["extracted_value"] == 8.0
assert "CSE" in data["fields"]["allowed_branches"]["extracted_value"]
def test_eligibility_run_and_scheduling_workflow(
client: TestClient,
auth_officer_headers: dict[str, str],
setup_pipeline_data: tuple[str, str, str],
) -> None:
drive_id, stu_1_id, stu_2_id = setup_pipeline_data
# 1. Run eligibility
elig_res = client.post(
"/api/eligibility/run",
json={"drive_id": drive_id},
headers=auth_officer_headers,
)
assert elig_res.status_code == 200
data = elig_res.json()
assert data["drive_id"] == drive_id
assert data["total_evaluated"] >= 2
# 2. Get decisions
dec_res = client.get(f"/api/eligibility/decisions/{drive_id}")
assert dec_res.status_code == 200
decisions = dec_res.json()
assert len(decisions) >= 1
# 3. Generate schedule
sched_res = client.post(
"/api/schedules/generate",
json={"drive_id": drive_id, "num_panels": 2, "round_duration_minutes": 30},
headers=auth_officer_headers,
)
assert sched_res.status_code == 200
sched_data = sched_res.json()
assert sched_data["zero_clashes_verified"] is True
assert sched_data["clash_count"] == 0
def test_what_if_and_publish_lifecycle(
client: TestClient,
auth_officer_headers: dict[str, str],
setup_pipeline_data: tuple[str, str, str],
) -> None:
drive_id, _, _ = setup_pipeline_data
# 1. What-If Simulation (in-memory)
sim_res = client.post(
"/api/what-if/simulate",
json={
"change_type": "cgpa_cutoff",
"drive_id": drive_id,
"target_field": "cgpa",
"old_value": 8.0,
"new_value": 6.0,
},
headers=auth_officer_headers,
)
assert sim_res.status_code == 200
report = sim_res.json()
assert "Lowering the CGPA cut-off" in report["headline"]
# 2. Publish Drive
pub_res = client.post(
f"/api/drives/{drive_id}/publish",
json={"expected_base_version": 1, "reason": "Official publish"},
headers=auth_officer_headers,
)
assert pub_res.status_code == 200
pub_data = pub_res.json()
assert pub_data["version"] == 2
assert pub_data["is_published"] is True
# 3. Rollback Drive
roll_res = client.post(
f"/api/drives/{drive_id}/rollback",
json={"target_version": 2, "reason": "Test rollback"},
headers=auth_officer_headers,
)
assert roll_res.status_code == 200
assert roll_res.json()["current_version"] == 3
def test_event_result_recording_and_dispute_comparison(
client: TestClient,
auth_officer_headers: dict[str, str],
setup_pipeline_data: tuple[str, str, str],
) -> None:
drive_id, stu_1_id, stu_2_id = setup_pipeline_data
# 1. Record recruitment offer event
event_res = client.post(
"/api/events/record-result",
json={
"student_id": stu_1_id,
"drive_id": drive_id,
"event_type": "offered",
"ctc_lpa": 16.0,
"reason": "Final technical round clearance",
},
headers=auth_officer_headers,
)
assert event_res.status_code == 200
data = event_res.json()
assert data["event_type"] == "offered"
assert "policy_changeset" in data
# 2. Dispute Comparison
comp_res = client.post(
"/api/compare/students",
json={
"student_a_id": stu_1_id,
"student_b_id": stu_2_id,
"drive_id": drive_id,
},
headers=auth_officer_headers,
)
assert comp_res.status_code == 200
comp_data = comp_res.json()
assert "comparative_summary" in comp_data
# 3. Audit Logs inspection
audit_res = client.get("/api/audit/logs")
assert audit_res.status_code == 200
assert len(audit_res.json()) >= 1
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