re-enable b run commands in test suite

Zsh has some incompatibilties that we've been trying to work around in
the b command. Hopefully this prevents future issues.

Bug: 242759256
Test: build/make/tests/roboleaf_tests.sh
Change-Id: I5e887932e943112377d38e77a77a0f294b43d9b6

envsetup.sh

@@ -1844,6 +1844,11 @@ function _trigger_build()
 # Convenience entry point (like m) to use Bazel in AOSP.
 function b()
 (
+    # zsh breaks posix by not doing string-splitting on unquoted args by default.
+    # See https://zsh.sourceforge.io/Guide/zshguide05.html section 5.4.4.
+    # Tell it to emulate Bourne shell for this function.
+    if [ -n "$ZSH_VERSION" ]; then emulate -L sh; fi
+
     # Look for the --run-soong-tests flag and skip passing --skip-soong-tests to Soong if present
     local bazel_args=""
     local skip_tests="--skip-soong-tests"
@@ -1883,14 +1888,7 @@ function b()
         fi
 
         # Call Bazel.
-        if [ -n "$ZSH_VERSION" ]; then
-            # zsh breaks posix by not doing string-splitting on unquoted args
-            # by default. Explicitly use the "=" flag to split.
-            # See https://zsh.sourceforge.io/Guide/zshguide05.html section 5.4.4.
-            bazel ${=bazel_args_with_config}
-        else
-            bazel ${bazel_args_with_config[@]}
-        fi
+        bazel ${bazel_args_with_config[@]}
     fi
 )
 

tests/b_tests.sh

@@ -25,4 +25,4 @@ b build "$test_target" --run-soong-tests
 b build --run-soong-tests "$test_target"
 b --run-soong-tests build "$test_target"
 b cquery 'kind(test, //build/bazel/examples/android_app/...)' --config=android
-#TODO(b/242759256) add some 'b run' command examples
+b run $test_target -- --help >/dev/null