page-issues sectionNumbers consistency on modalClose event

For the page-issues modalClose event, the number of values for `sectionNumbers`
and `issuesSeverity` should be the same, since `sectionNumbers` should describe
the the section of each visible issue in the modal, not the section of the
modal itself.

Bug: T203050
Change-Id: Ic58c5940a6059e71aa3aeed26232afbe8faf1618

resources/skins.minerva.scripts/PageIssuesOverlay.js

@@ -85,10 +85,19 @@
 		 * @return {void}
 		 */
 		onExit: function () {
-			this.log( {
-				action: 'modalClose',
-				issuesSeverity: this.issues.map( issueSummaryToSeverity )
-			} );
+			var logData = {
+					action: 'modalClose',
+					issuesSeverity: this.issues.map( issueSummaryToSeverity )
+				},
+				currentSection = this.section;
+			// When users close the modal, `sectionNumbers` should correlate to each visible issue in
+			// the modal, provided that this.section is a valid number and not `KEYWORD_ALL_SECTIONS`.
+			if ( this.section !== KEYWORD_ALL_SECTIONS ) {
+				logData.sectionNumbers = this.issues.map( function () {
+					return currentSection;
+				} );
+			}
+			this.log( logData );
 		},
 
 		/**

tests/qunit/skins.minerva.scripts/test_PageIssuesOverlay.js

@@ -22,15 +22,36 @@
 	} );
 
 	QUnit.test( '#log (section=1)', function ( assert ) {
-		var overlay = new PageIssuesOverlay( [], this.logger, '1', 0 );
+		var overlay = new PageIssuesOverlay( [
+			{
+				severity: 'MEDIUM'
+			}
+		], this.logger, '1', 0 );
 		overlay.onExit();
 		assert.strictEqual(
 			this.logger.log.calledWith( {
 				action: 'modalClose',
-				issuesSeverity: [],
+				issuesSeverity: [ 'MEDIUM' ],
 				sectionNumbers: [ '1' ]
 			} ), true, 'sectionNumbers is set'
 		);
 	} );
 
+	QUnit.test( '#log (section=2) multiple issues', function ( assert ) {
+		var overlay = new PageIssuesOverlay(
+			[ {
+				severity: 'MEDIUM'
+			},
+			{
+				severity: 'LOW'
+			} ], this.logger, '2', 0 );
+		overlay.onExit();
+		assert.strictEqual(
+			this.logger.log.calledWith( {
+				action: 'modalClose',
+				issuesSeverity: [ 'MEDIUM', 'LOW' ],
+				sectionNumbers: [ '2', '2' ]
+			} ), true, 'sectionNumbers is set for each issue'
+		);
+	} );
 }( mw.mobileFrontend ) );