test: refactor promises to async/await

PR-URL: #44980
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Danielle Adams <adamzdanielle@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>

test/sequential/test-debugger-break.js

@@ -9,123 +9,102 @@ const startCLI = require('../common/debugger');
 const assert = require('assert');
 const path = require('path');
 
-// Stepping through breakpoints.
-{
-  const scriptFullPath = fixtures.path('debugger', 'break.js');
-  const script = path.relative(process.cwd(), scriptFullPath);
-  const cli = startCLI([script]);
-
-  function onFatal(error) {
-    cli.quit();
-    throw error;
-  }
-
-  cli.waitForInitialBreak()
-    .then(() => cli.waitForPrompt())
-    .then(() => {
-      assert.deepStrictEqual(
-        cli.breakInfo,
-        { filename: script, line: 1 },
-      );
-      assert.match(
-        cli.output,
-        /> 1 (?:\(function \([^)]+\) \{ )?const x = 10;/,
-        'shows the source and marks the current line');
-    })
-    .then(() => cli.stepCommand('n'))
-    .then(() => {
-      assert.ok(
-        cli.output.includes(`break in ${script}:2`),
-        'pauses in next line of the script');
-      assert.match(
-        cli.output,
-        /> 2 let name = 'World';/,
-        'marks the 2nd line');
-    })
-    .then(() => cli.stepCommand('next'))
-    .then(() => {
-      assert.ok(
-        cli.output.includes(`break in ${script}:3`),
-        'pauses in next line of the script');
-      assert.match(
-        cli.output,
-        /> 3 name = 'Robin';/,
-        'marks the 3nd line');
-    })
-    .then(() => cli.stepCommand('cont'))
-    .then(() => {
-      assert.ok(
-        cli.output.includes(`break in ${script}:10`),
-        'pauses on the next breakpoint');
-      assert.match(
-        cli.output,
-        />10 debugger;/,
-        'marks the debugger line');
-    })
-
-    // Prepare additional breakpoints
-    .then(() => cli.command('sb("break.js", 6)'))
-    .then(() => assert.doesNotMatch(cli.output, /Could not resolve breakpoint/))
-    .then(() => cli.command('sb("otherFunction()")'))
-    .then(() => cli.command('sb(16)'))
-    .then(() => assert.doesNotMatch(cli.output, /Could not resolve breakpoint/))
-    .then(() => cli.command('breakpoints'))
-    .then(() => {
-      assert.ok(cli.output.includes(`#0 ${script}:6`));
-      assert.ok(cli.output.includes(`#1 ${script}:16`));
-    })
-
-    .then(() => cli.command('list()'))
-    .then(() => {
-      assert.match(
-        cli.output,
-        />10 debugger;/,
-        'prints and marks current line'
-      );
-      assert.deepStrictEqual(
-        cli.parseSourceLines(),
-        [5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15],
-      );
-    })
-    .then(() => cli.command('list(2)'))
-    .then(() => {
-      assert.match(
-        cli.output,
-        />10 debugger;/,
-        'prints and marks current line'
-      );
-      assert.deepStrictEqual(
-        cli.parseSourceLines(),
-        [8, 9, 10, 11, 12],
-      );
-    })
-
-    .then(() => cli.stepCommand('s'))
-    .then(() => cli.stepCommand(''))
-    .then(() => {
-      assert.match(
-        cli.output,
-        /break in node:timers/,
-        'entered timers.js');
-    })
-    .then(() => cli.stepCommand('cont'))
-    .then(() => {
-      assert.ok(
-        cli.output.includes(`break in ${script}:16`),
-        'found breakpoint we set above w/ line number only');
-    })
-    .then(() => cli.stepCommand('cont'))
-    .then(() => {
-      assert.ok(
-        cli.output.includes(`break in ${script}:6`),
-        'found breakpoint we set above w/ line number & script');
-    })
-    .then(() => cli.stepCommand(''))
-    .then(() => {
-      assert.ok(
-        cli.output.includes(`debugCommand in ${script}:14`),
-        'found function breakpoint we set above');
-    })
-    .then(() => cli.quit())
-    .then(null, onFatal);
-}
+const scriptFullPath = fixtures.path('debugger', 'break.js');
+const script = path.relative(process.cwd(), scriptFullPath);
+const cli = startCLI([script]);
+
+(async () => {
+  await cli.waitForInitialBreak();
+  await cli.waitForPrompt();
+  assert.deepStrictEqual(
+    cli.breakInfo,
+    { filename: script, line: 1 },
+  );
+  assert.match(
+    cli.output,
+    /> 1 (?:\(function \([^)]+\) \{ )?const x = 10;/,
+    'shows the source and marks the current line');
+
+  await cli.stepCommand('n');
+  assert.ok(
+    cli.output.includes(`break in ${script}:2`),
+    'pauses in next line of the script');
+  assert.match(
+    cli.output,
+    /> 2 let name = 'World';/,
+    'marks the 2nd line');
+
+  await cli.stepCommand('next');
+  assert.ok(
+    cli.output.includes(`break in ${script}:3`),
+    'pauses in next line of the script');
+  assert.match(
+    cli.output,
+    /> 3 name = 'Robin';/,
+    'marks the 3nd line');
+
+  await cli.stepCommand('cont');
+  assert.ok(
+    cli.output.includes(`break in ${script}:10`),
+    'pauses on the next breakpoint');
+  assert.match(
+    cli.output,
+    />10 debugger;/,
+    'marks the debugger line');
+
+  await cli.command('sb("break.js", 6)');
+  assert.doesNotMatch(cli.output, /Could not resolve breakpoint/);
+
+  await cli.command('sb("otherFunction()")');
+  await cli.command('sb(16)');
+  assert.doesNotMatch(cli.output, /Could not resolve breakpoint/);
+
+  await cli.command('breakpoints');
+  assert.ok(cli.output.includes(`#0 ${script}:6`));
+  assert.ok(cli.output.includes(`#1 ${script}:16`));
+
+  await cli.command('list()');
+  assert.match(
+    cli.output,
+    />10 debugger;/,
+    'prints and marks current line'
+  );
+  assert.deepStrictEqual(
+    cli.parseSourceLines(),
+    [5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15],
+  );
+
+  await cli.command('list(2)');
+  assert.match(
+    cli.output,
+    />10 debugger;/,
+    'prints and marks current line'
+  );
+  assert.deepStrictEqual(
+    cli.parseSourceLines(),
+    [8, 9, 10, 11, 12],
+  );
+
+  await cli.stepCommand('s');
+  await cli.stepCommand('');
+  assert.match(
+    cli.output,
+    /break in node:timers/,
+    'entered timers.js');
+
+  await cli.stepCommand('cont');
+  assert.ok(
+    cli.output.includes(`break in ${script}:16`),
+    'found breakpoint we set above w/ line number only');
+
+  await cli.stepCommand('cont');
+  assert.ok(
+    cli.output.includes(`break in ${script}:6`),
+    'found breakpoint we set above w/ line number & script');
+
+  await cli.stepCommand('');
+  assert.ok(
+    cli.output.includes(`debugCommand in ${script}:14`),
+    'found function breakpoint we set above');
+})().finally(() => cli.quit())
+  .then(common.mustCall());