Add option to control parallelism of ctest

package.json

@@ -153,7 +153,12 @@
                 "cmake.parallelJobs": {
                     "type": "number",
                     "default": 0,
-                    "description": "The number of parallel build/test jobs. Use zero to automatically detect the number of CPUs."
+                    "description": "The number of parallel build jobs. Use zero to automatically detect the number of CPUs."
+                },
+                "cmake.ctest.parallelJobs": {
+                    "type": "number",
+                    "default": 0,
+                    "description": "The number of parallel test jobs. Use zero to use the value of cmake.parallelJobs"
                 },
                 "cmake.setClangFlags": {
                     "type": "boolean",

src/cmake.ts

@@ -681,6 +681,14 @@ export class CMakeTools {
         return os.cpus().length + 2;
     }
 
+    public get numCTestJobs(): number {
+        const ctest_jobs = this.config<number>("ctest.parallelJobs");
+        if (ctest_jobs === 0) {
+            return this.numJobs;
+        }
+        return ctest_jobs;
+    }
+
     public configure = async function (extra_args: string[] = [], run_prebuild = true): Promise<Number> {
         const self: CMakeTools = this;
 
@@ -897,8 +905,8 @@ export class CMakeTools {
     }
 
     public ctest = async function (): Promise<Number> {
-        const self: CMakeTools = this;
-        return (await self.execute(['-E', 'chdir', self.binaryDir, 'ctest', '-j' + self.numJobs.toString(), '--output-on-failure'])).retc;
+        const self: CMakeTools = this;
+        return (await self.execute(['-E', 'chdir', self.binaryDir, 'ctest', '-j' + self.numCTestJobs, '--output-on-failure'])).retc;
     }
 
     public quickStart = async function (): Promise<Number> {