♻️ Refactor tests (#27)

Moves fixtures directory to the root, uses file snapshot in unit test,
and creates test helper script for pipeline tests. Updates CONTRIBUTING.

Tests will now all run instead of failing fast.

.github/workflows/pipeline.yaml

@@ -77,58 +77,29 @@ jobs:
       - name: Build
         run: npm run build
 
-      # Run tests
-      #
-      # - Run from $RUNNER_TEMP for auto-cleanup.
-      # - `./dist/main.js` is executing local `css-typed` as if installed (same as `bin`).
-      #   But it is `$GITHUB_WORKSPACE/dist/main.js` b/c we `cd $RUNNER_TEMP`.
-      # - Use `diff` to compare the files.
-      #   Use `-I '//.*'` to ignore the first line (comment) which has generated path and timestamp.
-
       - name: "Test 1: Default case"
         run: |
-          cp src/fixtures/casing/casing.css $RUNNER_TEMP/casing.css
-          cp src/fixtures/casing/dashesOnly.d.css.ts $RUNNER_TEMP/expected.d.css.ts
-
-          cd $RUNNER_TEMP
-          $GITHUB_WORKSPACE/dist/main.js '*.css'
-          diff --strip-trailing-cr -uI '//.*' expected.d.css.ts casing.d.css.ts
+          scripts/test.sh foo
 
-      - name: "Test 2: localsConvention, second position"
+      - name: "Test 2: localsConvention, first position"
+        if: success() || failure()
         run: |
-          cp src/fixtures/casing/casing.css $RUNNER_TEMP/casing.css
-          cp src/fixtures/casing/camelCaseOnly.d.css.ts $RUNNER_TEMP/expected.d.css.ts
-
-          cd $RUNNER_TEMP
-          $GITHUB_WORKSPACE/dist/main.js '*.css' --localsConvention camelCaseOnly
-          diff --strip-trailing-cr -uI '//.*' expected.d.css.ts casing.d.css.ts
+          scripts/test.sh casing/casing "--localsConvention camelCaseOnly" casing/camelCaseOnly
 
-      - name: "Test 3: localsConvention, first position"
+      - name: "Test 3: localsConvention, second position"
+        if: success() || failure()
         run: |
-          cp src/fixtures/casing/casing.css $RUNNER_TEMP/casing.css
-          cp src/fixtures/casing/camelCaseOnly.d.css.ts $RUNNER_TEMP/expected.d.css.ts
-
-          cd $RUNNER_TEMP
-          $GITHUB_WORKSPACE/dist/main.js --localsConvention camelCaseOnly '*.css'
-          diff --strip-trailing-cr -uI '//.*' expected.d.css.ts casing.d.css.ts
+          scripts/test.sh casing/casing "" casing/camelCaseOnly "--localsConvention camelCaseOnly"
 
       - name: "Test 4: relative outdir"
+        if: success() || failure()
         run: |
-          cp src/fixtures/casing/casing.css $RUNNER_TEMP/casing.css
-          cp src/fixtures/casing/dashesOnly.d.css.ts $RUNNER_TEMP/expected.d.css.ts
-
-          cd $RUNNER_TEMP
-          $GITHUB_WORKSPACE/dist/main.js '*.css' --outdir generated
-          diff --strip-trailing-cr -uI '//.*' expected.d.css.ts generated/casing.d.css.ts
+          scripts/test.sh foo "--outdir generated" "" "" generated/
 
       - name: "Test 5: absolute outdir"
+        if: success() || failure()
         run: |
-          cp src/fixtures/casing/casing.css $RUNNER_TEMP/casing.css
-          cp src/fixtures/casing/dashesOnly.d.css.ts $RUNNER_TEMP/expected.d.css.ts
-
-          cd $RUNNER_TEMP
-          $GITHUB_WORKSPACE/dist/main.js '*.css' -o $GITHUB_WORKSPACE/generated
-          diff --strip-trailing-cr -uI '//.*' expected.d.css.ts $GITHUB_WORKSPACE/generated/casing.d.css.ts
+          scripts/test.sh foo "-o $GITHUB_WORKSPACE/generated" "" "" "$GITHUB_WORKSPACE"/generated/
 
   Publish:
     if: ${{ github.ref == 'refs/heads/main' }}

CONTRIBUTING.md

@@ -1,6 +1,6 @@
 # Contributing
 
-The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14 [[RFC2119]] [[RFC8174]] when, and only when, they appear in all capitals, as shown here.
+The keywords "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14 [[RFC2119]] [[RFC8174]] when, and only when, they appear in all capitals, as shown here.
 
 ## Getting started
 
@@ -20,9 +20,12 @@ The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "S
 
 The [src](./src) directory contains the main and test sources.
 
-- [main.js](./src/main.js) represents the entry point (the CLI tool).
-- [generate-declaration.js](./src/generate-declaration.js) represents the unit-tested JS logic.
-- [fixtures](./src/fixtures) directory contains files for data-file-driven unit tests.
+- [main.ts](./src/main.ts) represents the entry point (the CLI tool).
+- [logic.ts](./src/logic.ts) represents the unit-tested logic.
+
+The [fixtures](fixtures) directory contains files for data-file-driven unit tests.
+
+The [scripts](./scripts) directory contains the esbuild build script and pipeline test helper script.
 
 ## Expectations
 
@@ -31,7 +34,7 @@ All contributions MUST adhere to the following expectations.
 1. Every change MUST have unit tests.
 2. Every change MUST have a GitHub issue linked.
 3. Any configuration option change SHOULD be discussed in a GitHub issue first.
-4. The PR build (see [pipeline.yaml](./.github/workflows/pipeline.yaml)) MUST succeed.
+4. The PR build and test (see [pipeline.yaml](./.github/workflows/pipeline.yaml)) MUST succeed.
 5. I will squash-merge the changeset into `main` upon approval.
 
 [RFC2119]: https://www.rfc-editor.org/rfc/rfc2119

eslint.config.js

@@ -4,6 +4,6 @@ export default [
 	...connorjsConfig,
 	{
 		// Ignore declaration files used for tests. These represent generated files.
-		ignores: [`src/fixtures/**/*.d.css.ts`],
+		ignores: [`fixtures/**/*.d.css.ts`],
 	},
 ];

src/fixtures/casing/camelCase.d.css.ts → fixtures/casing/camelCase.d.css.ts

@@ -1,4 +1,4 @@
-// Generated from `src/fixtures/casing/casing.css` by css-typed at $TIME
+// Generated from `fixtures/casing/casing.css` by css-typed at $TIME
 
 const lowercase: string;
 const UPPERCASE: string;

src/fixtures/casing/camelCaseOnly.d.css.ts → fixtures/casing/camelCaseOnly.d.css.ts

@@ -1,4 +1,4 @@
-// Generated from `src/fixtures/casing/casing.css` by css-typed at $TIME
+// Generated from `fixtures/casing/casing.css` by css-typed at $TIME
 
 export const lowercase: string;
 export const uppercase: string;

src/fixtures/casing/dashes.d.css.ts → fixtures/casing/dashes.d.css.ts

@@ -1,4 +1,4 @@
-// Generated from `src/fixtures/casing/casing.css` by css-typed at $TIME
+// Generated from `fixtures/casing/casing.css` by css-typed at $TIME
 
 const lowercase: string;
 const UPPERCASE: string;

src/fixtures/casing/dashesOnly.d.css.ts → fixtures/casing/dashesOnly.d.css.ts

@@ -1,4 +1,4 @@
-// Generated from `src/fixtures/casing/casing.css` by css-typed at $TIME
+// Generated from `fixtures/casing/casing.css` by css-typed at $TIME
 
 export const lowercase: string;
 export const UPPERCASE: string;

src/fixtures/casing/none.d.css.ts → fixtures/casing/none.d.css.ts

@@ -1,4 +1,4 @@
-// Generated from `src/fixtures/casing/casing.css` by css-typed at $TIME
+// Generated from `fixtures/casing/casing.css` by css-typed at $TIME
 
 const lowercase: string;
 const UPPERCASE: string;

src/fixtures/foo.d.css.ts → fixtures/foo.d.css.ts

@@ -1,4 +1,4 @@
-// Generated from `src/fixtures/foo.css` by css-typed at $TIME
+// Generated from `fixtures/foo.css` by css-typed at $TIME
 
 export const foo: string;
 export const bar: string;

src/fixtures/foo.module.d.css.ts → fixtures/foo.module.d.css.ts

@@ -1,4 +1,4 @@
-// Generated from `src/fixtures/foo.module.css` by css-typed at $TIME
+// Generated from `fixtures/foo.module.css` by css-typed at $TIME
 
 export const foo: string;
 export const bar: string;

package.json

@@ -26,12 +26,14 @@
 	"engines": {
 		"node": ">=18"
 	},
+	"engineStrict": true,
 	"bin": {
 		"css-typed": "dist/main.js"
 	},
 	"files": [
 		"dist"
 	],
+	"main": "dist/main.js",
 	"scripts": {
 		"build": "node scripts/build.js",
 		"ci-build": "npm-run-all -l -p eslint prettier test tsc -s build",
@@ -43,7 +45,6 @@
 		"test": "vitest run",
 		"tsc": "tsc"
 	},
-	"engineStrict": true,
 	"dependencies": {
 		"@commander-js/extra-typings": "^12.1.0",
 		"commander": "^12.1.0",
@@ -57,14 +58,13 @@
 		"@types/lodash.camelcase": "^4.3.9",
 		"@types/node": "^20.14.14",
 		"esbuild": "~0.23.0",
-		"eslint-config-connorjs": "^1.0.0",
+		"eslint-config-connorjs": "^1.1.0",
 		"husky": "^9.1.4",
 		"is-ci": "^3.0.1",
 		"lint-staged": "^15.2.8",
 		"npm-run-all": "^4.1.5",
 		"prettier": "^3.3.3",
 		"typescript": "^5.5.4",
 		"vitest": "^2.0.5"
-	},
-	"main": "dist/main.js"
+	}
 }

scripts/test.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+# $1 is the input name, relative to `fixtures`. Required.
+input=$1
+
+# $2 is the standard (before) options. Defaults to "".
+IFS=" " read -r -a beforeOpts <<< "${2:-}"
+
+# $3 is the output name, relative to `fixtures`. Defaults to $1.
+output=${3:-$1}
+
+# $4 is the after options. Use an array. Defaults to "".
+IFS=" " read -r -a afterOpts <<< "${4:-}"
+
+# $5 is the path prefix for output. Defaults to "".
+prefix=${5:-}
+
+# Run from $RUNNER_TEMP for auto-cleanup.
+cp fixtures/${input}.css $RUNNER_TEMP/test.css
+cp fixtures/${output}.d.css.ts $RUNNER_TEMP/expected.d.css.ts
+pushd $RUNNER_TEMP > /dev/null || exit
+
+# `./dist/main.js` is executing local `css-typed` as if installed (same as `bin`).
+# But it is `$GITHUB_WORKSPACE/dist/main.js` b/c we `cd $RUNNER_TEMP`.
+echo "css-typed ${beforeOpts[*]} \"*.css\" ${afterOpts[*]}"
+# shellcheck disable=SC2068
+$GITHUB_WORKSPACE/dist/main.js ${beforeOpts[@]} "*.css" ${afterOpts[@]}
+
+# Use `diff` to compare the files.
+# Use `-I '//.*'` to ignore the first line (comment) which has generated path and timestamp.
+diff --color=auto --strip-trailing-cr -uI "//.*" expected.d.css.ts ${prefix}test.d.css.ts

src/logic.test.ts

@@ -1,4 +1,3 @@
-import { readFileSync } from "node:fs";
 import path from "node:path";
 import * as process from "node:process";
 
@@ -31,10 +30,8 @@ describe(`css-typed`, () => {
 			const inputPath = fixtureFile(inputFilename);
 			const outputPath = fixtureFile(outputFilename);
 
-			const expected = readFileSync(outputPath, { encoding: `utf8` });
-
 			const generated = await generateDeclaration(inputPath, `$TIME`, options);
-			expect(generated).toStrictEqual(expected);
+			await expect(generated).toMatchFileSnapshot(outputPath);
 		});
 	});
 
@@ -57,5 +54,5 @@ describe(`css-typed`, () => {
 });
 
 function fixtureFile(filename: string) {
-	return path.join(import.meta.dirname, `fixtures`, filename);
+	return path.join(import.meta.dirname, `..`, `fixtures`, filename);
 }