test: strengthen assertions across 7 test files (batch 1)

Replaced weak 'is not None' / '> 0' / 'len >= 1' assertions with
concrete value checks across the most flagged test files:

gateway/test_pairing.py (11 weak → 0):
  - Code assertions verify isinstance + len == CODE_LENGTH
  - Approval results verify dict structure + specific user_id/user_name
  - Added code2 != code1 check in rate_limit_expires

test_hermes_state.py (6 weak → 0):
  - ended_at verified as float timestamp
  - Search result counts exact (== 2, not >= 1)
  - Context verified as non-empty list
  - Export verified as dict, session ID verified

test_cli_init.py (4 weak → 0):
  - max_turns asserts exact value (60)
  - model asserts string with provider/name format

gateway/test_hooks.py (2 zero-assert tests → fixed):
  - test_no_handlers_for_event: verifies no handler registered
  - test_handler_error_does_not_propagate: verifies handler count + return

gateway/test_platform_base.py (9 weak image tests → fixed):
  - extract_images tests now verify actual URL and alt_text
  - truncate_message verifies content preservation after splitting

cron/test_scheduler.py (1 weak → 0):
  - resolve_origin verifies dict equality, not just existence

cron/test_jobs.py (2 weak → 0 + 4 new tests):
  - Schedule parsing verifies ISO timestamp type
  - Cron expression verifies result is valid datetime string
  - NEW: 4 tests for update_job() (was completely untested)

tests/cron/test_jobs.py

@@ -15,6 +15,7 @@ from cron.jobs import (
     save_jobs,
     get_job,
     list_jobs,
+    update_job,
     remove_job,
     mark_job_run,
     get_due_jobs,
@@ -70,8 +71,10 @@ class TestParseSchedule:
         result = parse_schedule("30m")
         assert result["kind"] == "once"
         assert "run_at" in result
-        # run_at should be ~30 minutes from now
+        # run_at should be a valid ISO timestamp string ~30 minutes from now
-        run_at = datetime.fromisoformat(result["run_at"])
+        run_at_str = result["run_at"]
+        assert isinstance(run_at_str, str)
+        run_at = datetime.fromisoformat(run_at_str)
         assert run_at > datetime.now()
         assert run_at < datetime.now() + timedelta(minutes=31)
 
@@ -140,8 +143,10 @@ class TestComputeNextRun:
         pytest.importorskip("croniter")
         schedule = {"kind": "cron", "expr": "* * * * *"}  # every minute
         result = compute_next_run(schedule)
-        assert result is not None
+        assert isinstance(result, str), f"Expected ISO timestamp string, got {type(result)}"
+        assert len(result) > 0
         next_dt = datetime.fromisoformat(result)
+        assert isinstance(next_dt, datetime)
         assert next_dt > datetime.now()
 
     def test_unknown_kind_returns_none(self):
@@ -207,6 +212,48 @@ class TestJobCRUD:
         assert job["deliver"] == "local"
 
 
+class TestUpdateJob:
+    def test_update_name(self, tmp_cron_dir):
+        job = create_job(prompt="Check server status", schedule="every 1h", name="Old Name")
+        assert job["name"] == "Old Name"
+        updated = update_job(job["id"], {"name": "New Name"})
+        assert updated is not None
+        assert isinstance(updated, dict)
+        assert updated["name"] == "New Name"
+        # Verify other fields are preserved
+        assert updated["prompt"] == "Check server status"
+        assert updated["id"] == job["id"]
+        assert updated["schedule"] == job["schedule"]
+        # Verify persisted to disk
+        fetched = get_job(job["id"])
+        assert fetched["name"] == "New Name"
+
+    def test_update_schedule(self, tmp_cron_dir):
+        job = create_job(prompt="Daily report", schedule="every 1h")
+        assert job["schedule"]["kind"] == "interval"
+        assert job["schedule"]["minutes"] == 60
+        new_schedule = parse_schedule("every 2h")
+        updated = update_job(job["id"], {"schedule": new_schedule})
+        assert updated is not None
+        assert updated["schedule"]["kind"] == "interval"
+        assert updated["schedule"]["minutes"] == 120
+        # Verify persisted to disk
+        fetched = get_job(job["id"])
+        assert fetched["schedule"]["minutes"] == 120
+
+    def test_update_enable_disable(self, tmp_cron_dir):
+        job = create_job(prompt="Toggle me", schedule="every 1h")
+        assert job["enabled"] is True
+        updated = update_job(job["id"], {"enabled": False})
+        assert updated["enabled"] is False
+        fetched = get_job(job["id"])
+        assert fetched["enabled"] is False
+
+    def test_update_nonexistent_returns_none(self, tmp_cron_dir):
+        result = update_job("nonexistent_id", {"name": "X"})
+        assert result is None
+
+
 class TestMarkJobRun:
     def test_increments_completed(self, tmp_cron_dir):
         job = create_job(prompt="Test", schedule="every 1h")

tests/cron/test_scheduler.py

@@ -15,9 +15,11 @@ class TestResolveOrigin:
             }
         }
         result = _resolve_origin(job)
-        assert result is not None
+        assert isinstance(result, dict)
+        assert result == job["origin"]
         assert result["platform"] == "telegram"
         assert result["chat_id"] == "123456"
+        assert result["chat_name"] == "Test Chat"
 
     def test_no_origin(self):
         assert _resolve_origin({}) is None

tests/gateway/test_hooks.py

@@ -177,8 +177,10 @@ class TestEmit:
     @pytest.mark.asyncio
     async def test_no_handlers_for_event(self, tmp_path):
         reg = HookRegistry()
-        # Should not raise
+        # Should not raise and should have no handlers registered
-        await reg.emit("unknown:event", {})
+        result = await reg.emit("unknown:event", {})
+        assert result is None
+        assert not reg._handlers.get("unknown:event")
 
     @pytest.mark.asyncio
     async def test_handler_error_does_not_propagate(self, tmp_path):
@@ -190,8 +192,10 @@ class TestEmit:
         with patch("gateway.hooks.HOOKS_DIR", tmp_path):
             reg.discover_and_load()
 
+        assert len(reg._handlers.get("agent:start", [])) == 1
         # Should not raise even though handler throws
-        await reg.emit("agent:start", {})
+        result = await reg.emit("agent:start", {})
+        assert result is None
 
     @pytest.mark.asyncio
     async def test_emit_default_context(self, tmp_path):

tests/gateway/test_pairing.py

@@ -54,7 +54,7 @@ class TestCodeGeneration:
         with patch("gateway.pairing.PAIRING_DIR", tmp_path):
             store = PairingStore()
             code = store.generate_code("telegram", "user1", "Alice")
-        assert code is not None
+        assert isinstance(code, str) and len(code) == CODE_LENGTH
         assert len(code) == CODE_LENGTH
         assert all(c in ALPHABET for c in code)
 
@@ -65,7 +65,7 @@ class TestCodeGeneration:
             codes = set()
             for i in range(3):
                 code = store.generate_code("telegram", f"user{i}")
-                assert code is not None
+                assert isinstance(code, str) and len(code) == CODE_LENGTH
                 codes.add(code)
         assert len(codes) == 3
 
@@ -91,7 +91,7 @@ class TestRateLimiting:
             store = PairingStore()
             code1 = store.generate_code("telegram", "user1")
             code2 = store.generate_code("telegram", "user1")
-        assert code1 is not None
+        assert isinstance(code1, str) and len(code1) == CODE_LENGTH
         assert code2 is None  # rate limited
 
     def test_different_users_not_rate_limited(self, tmp_path):
@@ -99,14 +99,14 @@ class TestRateLimiting:
             store = PairingStore()
             code1 = store.generate_code("telegram", "user1")
             code2 = store.generate_code("telegram", "user2")
-        assert code1 is not None
+        assert isinstance(code1, str) and len(code1) == CODE_LENGTH
-        assert code2 is not None
+        assert isinstance(code2, str) and len(code2) == CODE_LENGTH
 
     def test_rate_limit_expires(self, tmp_path):
         with patch("gateway.pairing.PAIRING_DIR", tmp_path):
             store = PairingStore()
             code1 = store.generate_code("telegram", "user1")
-            assert code1 is not None
+            assert isinstance(code1, str) and len(code1) == CODE_LENGTH
 
             # Simulate rate limit expiry
             limits = store._load_json(store._rate_limit_path())
@@ -114,7 +114,8 @@ class TestRateLimiting:
             store._save_json(store._rate_limit_path(), limits)
 
             code2 = store.generate_code("telegram", "user1")
-        assert code2 is not None
+        assert isinstance(code2, str) and len(code2) == CODE_LENGTH
+        assert code2 != code1
 
 
 # ---------------------------------------------------------------------------
@@ -132,7 +133,7 @@ class TestMaxPending:
                 codes.append(code)
 
         # First MAX_PENDING_PER_PLATFORM should succeed
-        assert all(c is not None for c in codes[:MAX_PENDING_PER_PLATFORM])
+        assert all(isinstance(c, str) and len(c) == CODE_LENGTH for c in codes[:MAX_PENDING_PER_PLATFORM])
         # Next one should be blocked
         assert codes[MAX_PENDING_PER_PLATFORM] is None
 
@@ -143,7 +144,7 @@ class TestMaxPending:
                 store.generate_code("telegram", f"user{i}")
             # Different platform should still work
             code = store.generate_code("discord", "user0")
-        assert code is not None
+        assert isinstance(code, str) and len(code) == CODE_LENGTH
 
 
 # ---------------------------------------------------------------------------
@@ -158,7 +159,9 @@ class TestApprovalFlow:
             code = store.generate_code("telegram", "user1", "Alice")
             result = store.approve_code("telegram", code)
 
-        assert result is not None
+        assert isinstance(result, dict)
+        assert "user_id" in result
+        assert "user_name" in result
         assert result["user_id"] == "user1"
         assert result["user_name"] == "Alice"
 
@@ -187,14 +190,18 @@ class TestApprovalFlow:
             store = PairingStore()
             code = store.generate_code("telegram", "user1", "Alice")
             result = store.approve_code("telegram", code.lower())
-        assert result is not None
+        assert isinstance(result, dict)
+        assert result["user_id"] == "user1"
+        assert result["user_name"] == "Alice"
 
     def test_approve_strips_whitespace(self, tmp_path):
         with patch("gateway.pairing.PAIRING_DIR", tmp_path):
             store = PairingStore()
             code = store.generate_code("telegram", "user1", "Alice")
             result = store.approve_code("telegram", f"  {code}  ")
-        assert result is not None
+        assert isinstance(result, dict)
+        assert result["user_id"] == "user1"
+        assert result["user_name"] == "Alice"
 
     def test_invalid_code_returns_none(self, tmp_path):
         with patch("gateway.pairing.PAIRING_DIR", tmp_path):

tests/gateway/test_platform_base.py

@@ -92,36 +92,50 @@ class TestExtractImages:
         content = "![photo](https://example.com/photo.jpg)"
         images, _ = BasePlatformAdapter.extract_images(content)
         assert len(images) == 1
+        assert images[0][0] == "https://example.com/photo.jpg"
+        assert images[0][1] == "photo"
 
     def test_markdown_image_jpeg(self):
         content = "![](https://example.com/photo.jpeg)"
         images, _ = BasePlatformAdapter.extract_images(content)
         assert len(images) == 1
+        assert images[0][0] == "https://example.com/photo.jpeg"
+        assert images[0][1] == ""
 
     def test_markdown_image_gif(self):
         content = "![anim](https://example.com/anim.gif)"
         images, _ = BasePlatformAdapter.extract_images(content)
         assert len(images) == 1
+        assert images[0][0] == "https://example.com/anim.gif"
+        assert images[0][1] == "anim"
 
     def test_markdown_image_webp(self):
         content = "![](https://example.com/img.webp)"
         images, _ = BasePlatformAdapter.extract_images(content)
         assert len(images) == 1
+        assert images[0][0] == "https://example.com/img.webp"
+        assert images[0][1] == ""
 
     def test_fal_media_cdn(self):
         content = "![gen](https://fal.media/files/abc123/output.png)"
         images, _ = BasePlatformAdapter.extract_images(content)
         assert len(images) == 1
+        assert images[0][0] == "https://fal.media/files/abc123/output.png"
+        assert images[0][1] == "gen"
 
     def test_fal_cdn_url(self):
         content = "![](https://fal-cdn.example.com/result)"
         images, _ = BasePlatformAdapter.extract_images(content)
         assert len(images) == 1
+        assert images[0][0] == "https://fal-cdn.example.com/result"
+        assert images[0][1] == ""
 
     def test_replicate_delivery(self):
         content = "![](https://replicate.delivery/pbxt/abc/output)"
         images, _ = BasePlatformAdapter.extract_images(content)
         assert len(images) == 1
+        assert images[0][0] == "https://replicate.delivery/pbxt/abc/output"
+        assert images[0][1] == ""
 
     def test_non_image_ext_not_extracted(self):
         """Markdown image with non-image extension should not be extracted."""
@@ -142,11 +156,15 @@ class TestExtractImages:
         content = '<img src="https://example.com/photo.png"/>'
         images, _ = BasePlatformAdapter.extract_images(content)
         assert len(images) == 1
+        assert images[0][0] == "https://example.com/photo.png"
+        assert images[0][1] == ""
 
     def test_html_img_with_closing_tag(self):
         content = '<img src="https://example.com/photo.png"></img>'
         images, _ = BasePlatformAdapter.extract_images(content)
         assert len(images) == 1
+        assert images[0][0] == "https://example.com/photo.png"
+        assert images[0][1] == ""
 
     def test_multiple_images(self):
         content = "![a](https://example.com/a.png)\n![b](https://example.com/b.jpg)"
@@ -267,6 +285,11 @@ class TestTruncateMessage:
         msg = "word " * 200  # ~1000 chars
         chunks = adapter.truncate_message(msg, max_length=200)
         assert len(chunks) > 1
+        # Verify all original content is preserved across chunks
+        reassembled = "".join(chunks)
+        # Strip chunk indicators like (1/N) to get raw content
+        for word in msg.strip().split():
+            assert word in reassembled, f"Word '{word}' lost during truncation"
 
     def test_chunks_have_indicators(self):
         adapter = self._adapter()

tests/test_cli_init.py

@@ -23,7 +23,7 @@ class TestMaxTurnsResolution:
     def test_default_max_turns_is_integer(self):
         cli = _make_cli()
         assert isinstance(cli.max_turns, int)
-        assert cli.max_turns > 0
+        assert cli.max_turns == 60
 
     def test_explicit_max_turns_honored(self):
         cli = _make_cli(max_turns=25)
@@ -32,7 +32,7 @@ class TestMaxTurnsResolution:
     def test_none_max_turns_gets_default(self):
         cli = _make_cli(max_turns=None)
         assert isinstance(cli.max_turns, int)
-        assert cli.max_turns > 0
+        assert cli.max_turns == 60
 
     def test_env_var_max_turns(self, monkeypatch):
         """Env var is used when config file doesn't set max_turns."""
@@ -54,7 +54,7 @@ class TestMaxTurnsResolution:
     def test_max_turns_never_none_for_agent(self):
         """The value passed to AIAgent must never be None (causes TypeError in run_conversation)."""
         cli = _make_cli()
-        assert cli.max_turns is not None
+        assert isinstance(cli.max_turns, int) and cli.max_turns == 60
 
 
 class TestVerboseAndToolProgress:
@@ -81,4 +81,4 @@ class TestProviderResolution:
     def test_model_is_string(self):
         cli = _make_cli()
         assert isinstance(cli.model, str)
-        assert len(cli.model) > 0
+        assert isinstance(cli.model, str) and '/' in cli.model

tests/test_hermes_state.py

@@ -43,7 +43,7 @@ class TestSessionLifecycle:
         db.end_session("s1", end_reason="user_exit")
 
         session = db.get_session("s1")
-        assert session["ended_at"] is not None
+        assert isinstance(session["ended_at"], float)
         assert session["end_reason"] == "user_exit"
 
     def test_update_system_prompt(self, db):
@@ -138,7 +138,7 @@ class TestFTS5Search:
         db.append_message("s1", role="assistant", content="Use docker compose up.")
 
         results = db.search_messages("docker")
-        assert len(results) >= 1
+        assert len(results) == 2
         # At least one result should mention docker
         snippets = [r.get("snippet", "") for r in results]
         assert any("docker" in s.lower() or "Docker" in s for s in snippets)
@@ -174,8 +174,10 @@ class TestFTS5Search:
         db.append_message("s1", role="assistant", content="Kubernetes is an orchestrator.")
 
         results = db.search_messages("Kubernetes")
-        assert len(results) >= 1
+        assert len(results) == 2
         assert "context" in results[0]
+        assert isinstance(results[0]["context"], list)
+        assert len(results[0]["context"]) > 0
 
 
 # =========================================================================
@@ -266,7 +268,7 @@ class TestDeleteAndExport:
         db.append_message("s1", role="assistant", content="Hi")
 
         export = db.export_session("s1")
-        assert export is not None
+        assert isinstance(export, dict)
         assert export["source"] == "cli"
         assert len(export["messages"]) == 2
 
@@ -312,7 +314,9 @@ class TestPruneSessions:
         pruned = db.prune_sessions(older_than_days=90)
         assert pruned == 1
         assert db.get_session("old") is None
-        assert db.get_session("new") is not None
+        session = db.get_session("new")
+        assert session is not None
+        assert session["id"] == "new"
 
     def test_prune_skips_active_sessions(self, db):
         db.create_session(session_id="active", source="cli")