feat: refactor and test tools steps utilities (#42693)

tools/challenge-helper-scripts/helpers/get-step-template.test.js

@@ -0,0 +1,56 @@
+const { getStepTemplate } = require('./get-step-template');
+
+// Note: evaluates at highlevel the process, but seedHeads and seedTails could
+// be tested if more specifics are needed.
+describe('getStepTemplate util', () => {
+  it('should be able to create a markdown', () => {
+    const baseOutput = `---
+id: 60d4ebe4801158d1abe1b18f
+title: Part 5
+challengeType: 0
+dashedName: part-5
+---
+
+# --description--
+
+step 5 instructions
+
+# --hints--
+
+Test 1
+
+\`\`\`js
+
+\`\`\`
+
+# --seed--
+
+## --seed-contents--
+
+\`\`\`html
+--fcc-editable-region--
+
+--fcc-editable-region--
+\`\`\``;
+
+    const props = {
+      challengeId: '60d4ebe4801158d1abe1b18f',
+      challengeSeeds: {
+        indexhtml: {
+          contents: '',
+          editableRegionBoundaries: [0, 2],
+          ext: 'html',
+          head: '',
+          id: '',
+          key: 'indexhtml',
+          name: 'index',
+          tail: ''
+        }
+      },
+      stepBetween: false,
+      stepNum: 5
+    };
+
+    expect(getStepTemplate(props)).toEqual(baseOutput);
+  });
+});