build: unable to run schematics tests through test script

Fixes not being able to run the schematics tests through `yarn test`. The logic for resolving the package was correct, but we were appending the wrong target name.

Fixes #19182.

Author: crisbeto

scripts/run-component-tests.js

@@ -62,16 +62,14 @@ if (local && (components.length > 1 || all)) {
 }
 
 const bazelBinary = `yarn -s ${watch ? 'ibazel' : 'bazel'}`;
-const testTargetName =
-    `unit_tests_${local ? 'local' : firefox ? 'firefox-local' : 'chromium-local'}`;
 const configFlag = viewEngine ? '--config=view-engine' : '';
 
 // If `all` has been specified as component, we run tests for all components
 // in the repository. The `--firefox` flag can be still specified.
 if (all) {
   shelljs.exec(
-      `${bazelBinary} test //src/... --test_tag_filters=-e2e,-browser:${testTargetName} ` +
-      `--build_tag_filters=-browser:${testTargetName} --build_tests_only ${configFlag}`);
+      `${bazelBinary} test //src/... --test_tag_filters=-e2e,-browser:${getTargetName()} ` +
+      `--build_tag_filters=-browser:${getTargetName()} --build_tests_only ${configFlag}`);
   return;
 }
 
@@ -90,7 +88,7 @@ if (!components.length) {
 const bazelAction = local ? 'run' : 'test';
 const testLabels = components
     .map(t => correctTypos(t))
-    .map(t => `${getBazelPackageOfComponentName(t)}:${testTargetName}`);
+    .map(t => `${getBazelPackageOfComponentName(t)}:${getTargetName(t)}`);
 
 // Runs Bazel for the determined test labels.
 shelljs.exec(`${bazelBinary} ${bazelAction} ${testLabels.join(' ')} ${configFlag}`);
@@ -143,3 +141,13 @@ function correctTypos(target) {
 function convertPathToPosix(pathName) {
   return pathName.replace(/\\/g, '/');
 }
+
+/** Gets the name of the target that should be run. */
+function getTargetName(packageName) {
+  // Schematics don't have _local and browser targets.
+  if (packageName && packageName.endsWith('schematics')) {
+    return 'unit_tests';
+  }
+
+  return `unit_tests_${local ? 'local' : (firefox ? 'firefox-local' : 'chromium-local')}`;
+}