[Tests] add more assertions

test/fixtures/basic-comments/expected.json

@@ -0,0 +1 @@
+{ "node": "v20" }

test/fixtures/basic-invalid/expected.json

@@ -0,0 +1,4 @@
+[
+	"foo",
+	"bar"
+]

test/fixtures/basic-with-comment/expected.json

@@ -0,0 +1 @@
+{ "node": "21.2" }

test/fixtures/basic-with-npm/expected.json

@@ -0,0 +1 @@
+{ "node": "node", "npm": "10" }

test/fixtures/basic/expected.json

@@ -0,0 +1 @@
+{ "node": "node" }

test/fixtures/duplicate-pairs/expected.json

@@ -0,0 +1,5 @@
+[
+	"node",
+	"npm=3",
+	"npm=4"
+]

test/fixtures/invalid/expected.json

@@ -0,0 +1,3 @@
+[
+	"a=b"
+]

test/fixtures/only-comments/expected.json

@@ -0,0 +1 @@
+[]

test/fixtures/pre-normalized/expected.json

@@ -0,0 +1,4 @@
+[
+	"node=foo",
+	"npm=bar"
+]

test/index.mjs

@@ -1,6 +1,6 @@
 import { spawnSync } from 'child_process';
 import { join } from 'path';
-import { readdirSync } from 'fs';
+import { readFileSync, readdirSync } from 'fs';
 
 import test from 'tape';
 
@@ -34,14 +34,18 @@ test('nvmrc', async (t) => {
 		t.test(`fixture ${fixture}`, (st) => {
 			const cwd = join(fixtureDir, fixture);
 
-			const { stdout, status } = spawnSync(`${bin}`, { cwd });
+			const { status, stdout } = spawnSync(`${bin}`, { cwd });
 
 			st.equal(status, 0, 'yields a zero exit code');
 
 			const stripped = stripColors(`${stdout}`);
 
 			st.doesNotThrow(() => JSON.parse(stripped), `fixture ${fixture} is valid, yields ${stripped.replace(/\n\s*/g, ' ')}`);
 
+			const expected = JSON.parse(`${readFileSync(join(cwd, 'expected.json'))}`);
+
+			st.deepEqual(JSON.parse(stripped), expected, `fixture ${fixture} yields expected result`);
+
 			st.end();
 		});
 	}
@@ -67,6 +71,10 @@ test('nvmrc', async (t) => {
 				'non-commented content parsed:',
 			]);
 
+			const expected = JSON.parse(`${readFileSync(join(cwd, 'expected.json'))}`);
+
+			st.deepEqual(lines.slice(6), expected, `fixture ${fixture} produces expected warning lines`);
+
 			st.end();
 		});
 	}