testing: apply coverage comments for attributable coverage

Refs #233709

src/vs/workbench/api/common/extHostTesting.ts

@@ -696,7 +696,7 @@ class TestRunTracker extends Disposable {
 			if (index === -1) {
 				return []; // ??
 			}
-			testItem = report.fromTests[index];
+			testItem = report.includesTests[index];
 		}
 
 		const details = testItem
@@ -755,10 +755,10 @@ class TestRunTracker extends Disposable {
 					return;
 				}
 
-				const fromTests = coverage instanceof FileCoverage ? coverage.fromTests : [];
-				if (fromTests.length) {
+				const includesTests = coverage instanceof FileCoverage ? coverage.includesTests : [];
+				if (includesTests.length) {
 					checkProposedApiEnabled(this.extension, 'attributableCoverage');
-					for (const test of fromTests) {
+					for (const test of includesTests) {
 						this.ensureTestIsKnown(test);
 					}
 				}
@@ -769,7 +769,7 @@ class TestRunTracker extends Disposable {
 				// it's been reported if it's rehomed under a different parent. Record its
 				// ID at the time when the coverage report is generated so we can reference
 				// it later if needeed.
-				this.publishedCoverage.set(id, { report: coverage, extIds: fromTests.map(t => TestId.fromExtHostTestItem(t, ctrlId).toString()) });
+				this.publishedCoverage.set(id, { report: coverage, extIds: includesTests.map(t => TestId.fromExtHostTestItem(t, ctrlId).toString()) });
 				this.proxy.$appendCoverage(runId, taskId, Convert.TestCoverage.fromFile(ctrlId, id, coverage));
 			},
 			//#region state mutation

src/vs/workbench/api/common/extHostTypeConverters.ts

@@ -2149,8 +2149,8 @@ export namespace TestCoverage {
 			statement: fromCoverageCount(coverage.statementCoverage),
 			branch: coverage.branchCoverage && fromCoverageCount(coverage.branchCoverage),
 			declaration: coverage.declarationCoverage && fromCoverageCount(coverage.declarationCoverage),
-			testIds: coverage instanceof types.FileCoverage && coverage.fromTests.length ?
-				coverage.fromTests.map(t => TestId.fromExtHostTestItem(t, controllerId).toString()) : undefined,
+			testIds: coverage instanceof types.FileCoverage && coverage.includesTests.length ?
+				coverage.includesTests.map(t => TestId.fromExtHostTestItem(t, controllerId).toString()) : undefined,
 		};
 	}
 }

src/vs/workbench/api/common/extHostTypes.ts

@@ -4262,7 +4262,7 @@ export class FileCoverage implements vscode.FileCoverage {
 		public statementCoverage: vscode.TestCoverageCount,
 		public branchCoverage?: vscode.TestCoverageCount,
 		public declarationCoverage?: vscode.TestCoverageCount,
-		public fromTests: vscode.TestItem[] = [],
+		public includesTests: vscode.TestItem[] = [],
 	) {
 	}
 }

src/vscode-dts/vscode.proposed.attributableCoverage.d.ts

@@ -10,14 +10,14 @@ declare module 'vscode' {
 		 * file. If set, then {@link TestRunProfile.loadDetailedCoverageForTest}
 		 * should also be defined in order to retrieve detailed coverage information.
 		 */
-		fromTests?: TestItem[]; // TODO: `from` feels weird to me. Maybe `sourceTests` or `contributingTests` or even just `tests`
+		includesTests?: TestItem[];
 
 		constructor(
 			uri: Uri,
 			statementCoverage: TestCoverageCount,
 			branchCoverage?: TestCoverageCount,
 			declarationCoverage?: TestCoverageCount,
-			fromTests?: TestItem[],
+			includesTests?: TestItem[],
 		);
 	}
 
@@ -26,10 +26,12 @@ declare module 'vscode' {
 		 * An extension-provided function that provides detailed statement and
 		 * function-level coverage for a single test in a file. This is the per-test
 		 * sibling of {@link TestRunProfile.loadDetailedCoverage}, called only if
-		 * a test item is provided in {@link FileCoverage.fromTests} and only for
-		 * files where such data is reported.
+		 * a test item is provided in {@link FileCoverage.includesTests} and only
+		 * for files where such data is reported.
 		 *
-		 * // TODO: clarify how this works with `loadDetailedCoverage`. Does it replace `loadDetailedCoverage` or will it be called in addition to it?
+		 * Often {@link TestRunProfile.loadDetailedCoverage} will be called first
+		 * when a user opens a file, and then this method will be called if they
+		 * drill down into specific per-test coverage information.
 		 *
 		 * The editor will call this when user asks to view coverage for a test in
 		 * a file, and the returned coverage information is used to display exactly