fix: improve dry-run command (#4225)

Author: kobenguyent

lib/command/dryRun.js

@@ -59,24 +59,39 @@ function printTests(files) {
 
   let numOfTests = 0;
   let numOfSuites = 0;
-  const filteredSuites = [];
+  let outputString = '';
+  const filterBy = process.env.grep ? process.env.grep.toLowerCase() : undefined;
 
-  for (const suite of mocha.suite.suites) {
-    if (process.env.grep && suite.title.toLowerCase().includes(process.env.grep)) {
-      filteredSuites.push(suite);
+  if (filterBy) {
+    for (const suite of mocha.suite.suites) {
+      const currentSuite = suite.title;
+      if (suite.title.toLowerCase().includes(filterBy)) {
+        outputString += `${colors.white.bold(suite.title)} -- ${output.styles.log(suite.file || '')} -- ${mocha.suite.suites.length} tests\n`;
+        numOfSuites++;
+      }
+
+      for (test of suite.tests) {
+        if (test.title.toLowerCase().includes(filterBy)) {
+          numOfTests++;
+          outputString += `${colors.white.bold(test.parent.title)} -- ${output.styles.log(test.parent.file || '')} -- ${mocha.suite.suites.length} tests\n`;
+          outputString += `  ${output.styles.scenario(figures.checkboxOff)} ${test.title}\n`;
+        }
+      }
     }
-  }
-  const displayedSuites = process.env.grep ? filteredSuites : mocha.suite.suites;
-  for (const suite of displayedSuites) {
-    output.print(`${colors.white.bold(suite.title)} -- ${output.styles.log(suite.file || '')} -- ${suite.tests.length} tests`);
-    numOfSuites++;
-
-    for (const test of suite.tests) {
-      numOfTests++;
-      output.print(`  ${output.styles.scenario(figures.checkboxOff)} ${test.title}`);
+    numOfSuites = countSuites(outputString);
+  } else {
+    for (const suite of mocha.suite.suites) {
+      output.print(`${colors.white.bold(suite.title)} -- ${output.styles.log(suite.file || '')} -- ${mocha.suite.suites.length} tests`);
+      numOfSuites++;
+
+      for (test of suite.tests) {
+        numOfTests++;
+        output.print(`  ${output.styles.scenario(figures.checkboxOff)} ${test.title}`);
+      }
     }
   }
 
+  output.print(removeDuplicates(outputString));
   output.print('');
   output.success(`  Total: ${numOfSuites} suites | ${numOfTests} tests  `);
   printFooter();
@@ -87,3 +102,19 @@ function printFooter() {
   output.print();
   output.print('--- DRY MODE: No tests were executed ---');
 }
+
+function removeDuplicates(inputString) {
+  const array = inputString.split('\n');
+  const uniqueLines = [...new Set(array)];
+  const resultString = uniqueLines.join('\n');
+
+  return resultString;
+}
+
+function countSuites(inputString) {
+  const array = inputString.split('\n');
+
+  const uniqueLines = [...new Set(array)];
+  const res = uniqueLines.filter(item => item.includes('-- '));
+  return res.length;
+}