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| 1 | +# Project Instructions |
| 2 | + |
| 3 | +## Post-Session Validation |
| 4 | + |
| 5 | +When a working session modifies TypeScript, Rust, Markdown, or YAML files, run `just full-check` before committing or |
| 6 | +handing off. If it fails, run `just full-write`, then re-run `just full-check` to confirm it passes. Additionally, |
| 7 | +`just tsc-check` must also pass. |
| 8 | + |
| 9 | +Skip this step when changes are limited to non-code files (e.g., documentation-only conversations, config files not |
| 10 | +covered by the checker). |
| 11 | + |
| 12 | +## Binary Test Pattern |
| 13 | + |
| 14 | +All `describe` blocks in test files must follow a binary pair structure. Every failure-condition `describe` must have a |
| 15 | +complementary `describe` that wraps all subsequent siblings. |
| 16 | + |
| 17 | +```ts |
| 18 | +// CORRECT — binary pairs |
| 19 | +describe("given X is zero", () => { |
| 20 | + it("should fail", ...); |
| 21 | +}); |
| 22 | +describe("given X is not zero", () => { |
| 23 | + describe("given Y overflows", () => { |
| 24 | + it("should fail", ...); |
| 25 | + }); |
| 26 | + describe("given Y does not overflow", () => { |
| 27 | + it("should succeed", ...); |
| 28 | + }); |
| 29 | +}); |
| 30 | + |
| 31 | +// WRONG — flat siblings without complement wrappers |
| 32 | +describe("given X is zero", () => { ... }); |
| 33 | +describe("given Y overflows", () => { ... }); |
| 34 | +describe("given valid parameters", () => { ... }); |
| 35 | +``` |
| 36 | + |
| 37 | +When testing model variants (LL vs LT), wrap them in a shared parent: |
| 38 | + |
| 39 | +```ts |
| 40 | +describe("given a null stream", () => { /* fail */ }); |
| 41 | +describe("given a valid stream", () => { |
| 42 | + describe("given a LL stream", () => { ... }); |
| 43 | + describe("given a LT stream", () => { ... }); |
| 44 | +}); |
| 45 | +``` |
| 46 | + |
| 47 | +Conditions belong in `describe`, not `it`. The `it` block should only contain the outcome ("should fail", "should create |
| 48 | +the stream"). If an `it` description contains "when", "with", "given", or "if", extract the condition into a wrapping |
| 49 | +`describe`. |
| 50 | + |
| 51 | +```ts |
| 52 | +// CORRECT |
| 53 | +describe("when start time equals first tranche timestamp", () => { |
| 54 | + it("should fail", async () => { ... }); |
| 55 | +}); |
| 56 | + |
| 57 | +// WRONG — condition leaked into it() |
| 58 | +it("should fail when start time equals first tranche timestamp", async () => { ... }); |
| 59 | +``` |
| 60 | + |
| 61 | +Follow the Rust validation order when structuring the binary tree (check the corresponding `check_*` function in |
| 62 | +`programs/lockup/src/utils/validations.rs`). |
| 63 | + |
| 64 | +## Test Label Grammar |
| 65 | + |
| 66 | +Use proper grammar in `describe` and `it` labels. Include verbs and articles unless doing so would make the label |
| 67 | +unreasonably long. Examples: |
| 68 | + |
| 69 | +- `"when signer is not sender"` not `"when signer not sender"` |
| 70 | +- `"given a non-cancelable stream"` not `"given non cancelable stream"` |
| 71 | +- `"when deposit amount is zero"` not `"when deposit amount zero"` |
| 72 | + |
| 73 | +## Test File Naming |
| 74 | + |
| 75 | +The top-level `describe` in each test file must match the filename (without `.test.ts`). For example, `cancelLl.test.ts` |
| 76 | +must use `describe("cancelLl", ...)`, not `describe("cancel", ...)`. |
| 77 | + |
| 78 | +## Anchor Error Aliases |
| 79 | + |
| 80 | +When importing Anchor error codes from `@coral-xyz/anchor-errors`, always alias them with an `ERR_` prefix: |
| 81 | + |
| 82 | +```ts |
| 83 | +// CORRECT |
| 84 | +import { ANCHOR_ERROR__ACCOUNT_NOT_INITIALIZED as ERR_ACCOUNT_NOT_INITIALIZED } from "@coral-xyz/anchor-errors"; |
| 85 | + |
| 86 | +// WRONG — missing ERR_ prefix |
| 87 | +import { ANCHOR_ERROR__ACCOUNT_NOT_INITIALIZED as ACCOUNT_NOT_INITIALIZED } from "@coral-xyz/anchor-errors"; |
| 88 | +``` |
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