test: raise per-file coverage gate to 90 across all clients (closes #1271) (#1532)

* test(web): audit branch-coverage outliers, raise per-file gate to 70 (#1271)

The web per-file coverage gate had drifted red: the recently-landed EMA
auth feature (core/auth/ema/*) and ClientSettings components shipped
undertested, and the prior 50% branch floor let business-logic branches
go untested. CI does not run the coverage gate, so this accumulated.

Add tests to bring every failing file above the gate and push branch
coverage well past 70 across the board, then raise the per-file branches
threshold 50 -> 70 in clients/web/vite.config.ts.

- EMA core (emaFlow, resourceContext, jwt, wire): 50-88% -> 86-100% branch
- EMA OIDC/transport (idpOidc, tokenEndpoint, transportProvider): -> 97-100%
- oauthManager / discovery: 73-83% -> 88-92%
- ClientSettingsModal/Form, ConnectionInfoContent: 0-88% -> 96-100%
- useClientSettingsDraft / useEmaIdpLoginState hooks: 20% -> 100%
- TaskStatusBadge / SortableServerCard outliers: 50% -> 100%

Coverable branches reached by mocking useComputedColorScheme (dark theme),
dnd-kit useSortable (isDragging), and fetch/OIDC paths. Remaining sub-100
branches are genuinely-unreachable defensive guards or happy-dom-inherent
(portal / useMediaQuery / typeof window) and documented in test comments.

No source files changed. Global web branch coverage 88.73% -> 90.63%.
AGENTS.md updated; cli/tui/launcher stay at 50 (out of scope).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* test: raise per-file coverage gate to 90/90/90/90 across all clients

Follows the #1271 web branch-coverage audit (50 -> 70) by raising the
whole per-file gate to >=90 on all four dimensions — lines, statements,
functions, branches — for web, cli, tui, and launcher (core/ is measured
under the web suite). A codebase-wide audit added real tests for every
outlier and brought global coverage up across the board.

Config: all four vitest/vite coverage configs set to 90/90/90/90.
Two pure-type modules (core/mcp/import/types.ts, clients/web/server/
types.ts) added to the web coverage exclude list, matching the existing
type-only exclusions.

Tests: ~50 test files extended/created across core (auth, ema, mcp,
remote, state, storage, react), web components/screens/server, and the
cli/tui clients. Highlights: full EMA OAuth flow + transport coverage,
inspectorClient/remote server backfill, every Mantine control's handler
branches, and the cli unsupported-method / argv-fallback paths.

Genuinely-unreachable branches are annotated at the source with justified
`/* v8 ignore -- <reason> */` comments rather than lowering the gate:
happy-dom-inherent paths (Mantine portal, useMediaQuery, typeof window
SSR guards), React StrictMode effect replay, and provably-dead defensive
guards (?? fallbacks the types make impossible, Select.onChange values
outside the allowed list). No runtime logic changed; the only structural
edits are two behavior-preserving refactors (ResourceTemplatePanel hoists
the field value to a local so the ignore applies in JSX; ToolsScreen
swaps a ternary for an if) and prettier line-wrapping.

Also fixed a flaky real-timer debounce assertion in PromptArgumentsForm
(asserted an exact sibling-typing interleaving that raced the 300ms
debounce; now asserts the load-bearing fact — a non-empty fire-time
sibling capture).

AGENTS.md updated to describe the uniform 90 gate and the v8-ignore
policy. All four client coverage gates, root validate, storybook (370),
and smoke pass.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* test(web): make connect-crash SSE reader stop on the terminal event

`readSseEvents` looped until the server closed the stream (`done`). The
server closes the events stream immediately after writing the terminal
`transport_error`, but under the heavy parallel scheduler pressure of a
full `coverage` run (v8 instrumentation across all workers) that close
can lag far enough behind the event to trip the 30s test timeout — a
hang, not a wrong result. This made the test intermittently fail under
`npm run coverage` (it passed in isolation and under CI's lighter
`test:integration`).

Stop reading as soon as the terminal `transport_error` event arrives
(cancelling the reader) instead of waiting only for `done`. That event is
always the last one the session queue emits, so nothing is lost, and the
test no longer depends on stream-close timing. The `done` break is kept
for any stream that closes first.

Verified green across two consecutive full `npm run test:coverage` runs
(3094 tests) where it previously hung, plus isolation (~0.5s).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Cliff Hall 2026-06-27 15:26:03 -04:00 • committed by GitHub
commit c96db0402e
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2 changed files with 8793 additions and 63 deletions

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@ -1,5 +1,9 @@
import { describe, it, expect } from "vitest";
import { describe, it, expect, vi } from "vitest";
import { mkdtempSync } from "node:fs";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { runCli } from "./helpers/cli-runner.js";
import { runCli as runCliDirect } from "../src/cli.js";
import {
expectCliSuccess,
expectCliFailure,
@ -1018,4 +1022,33 @@ describe("CLI Tests", () => {
expectCliFailure(result);
});
});
describe("argv placeholder fallbacks", () => {
// The cli-runner helper always prepends `["node", "inspector-cli", ...]`, so
// `rawArgs[0]`/`rawArgs[1]` are never undefined through it. Call `runCli`
// directly with a too-short argv to exercise the `?? "node"` /
// `?? "inspector-cli"` fallbacks in parseArgs (commander's `name()`/program
// bootstrap). With no method present, parseArgs throws "Method is required"
// before any connection, so this stays fully in-process and fast.
it("defaults the node/script argv slots when rawArgs has fewer than two entries", async () => {
// Point the catalog at a fresh temp file so the empty-argv run resolves
// deterministically (the default ~/.mcp-inspector catalog may already hold
// several servers on the dev machine). Either way the rawArgs[0]/[1]
// fallbacks have already run by the time parseArgs throws.
const tempCatalog = join(
mkdtempSync(join(tmpdir(), "cli-argv-")),
"mcp.json",
);
const errorSpy = vi.spyOn(console, "error").mockImplementation(() => {});
const prev = process.env.MCP_CATALOG_PATH;
process.env.MCP_CATALOG_PATH = tempCatalog;
try {
await expect(runCliDirect([])).rejects.toThrow();
} finally {
if (prev === undefined) delete process.env.MCP_CATALOG_PATH;
else process.env.MCP_CATALOG_PATH = prev;
errorSpy.mockRestore();
}
});
});
});

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@ -59,6 +59,22 @@ describe("CLI method coverage", () => {
expect(Array.isArray(json.tools)).toBe(true);
});
it("throws for an unsupported method after connecting", async () => {
// Reaches the final `else` in callMethod: the connection succeeds, none of
// the known method branches match, so it throws "Unsupported method".
const result = await runCli([
command,
...args,
"--cli",
"--method",
"definitely/not-a-real-method",
]);
expectCliFailure(result);
expectOutputContains(result, "Unsupported method");
expectOutputContains(result, "definitely/not-a-real-method");
});
it("rejects an invalid --transport value before connecting", async () => {
const result = await runCli([
command,