Add --all_incompatible_changes invocation policy test.

By the time the invocation policy gets enforced, the expansion flag should have been
expanded, and policy should act as on any other expansion flag.
PiperOrigin-RevId: 152692831

src/test/java/com/google/devtools/build/lib/runtime/AllIncompatibleChangesExpansionTest.java

diff --git a/src/test/java/com/google/devtools/build/lib/runtime/AllIncompatibleChangesExpansionTest.java b/src/test/java/com/google/devtools/build/lib/runtime/AllIncompatibleChangesExpansionTest.java
index c99246b..7f32df9 100644
--- a/src/test/java/com/google/devtools/build/lib/runtime/AllIncompatibleChangesExpansionTest.java
+++ b/src/test/java/com/google/devtools/build/lib/runtime/AllIncompatibleChangesExpansionTest.java
@@ -17,6 +17,9 @@
 import static com.google.common.truth.Truth.assertThat;
 import static org.junit.Assert.fail;
 
+import com.google.devtools.build.lib.flags.InvocationPolicyEnforcer;
+import com.google.devtools.build.lib.runtime.proto.InvocationPolicyOuterClass.InvocationPolicy;
+import com.google.devtools.build.lib.runtime.proto.InvocationPolicyOuterClass.UseDefault;
 import com.google.devtools.common.options.Converters;
 import com.google.devtools.common.options.ExpansionFunction;
 import com.google.devtools.common.options.IsolatedOptionsData;
@@ -144,6 +147,30 @@
     assertThat(opts.incompatibleB).isTrue();
   }
 
+  @Test
+  public void invocationPolicy() throws OptionsParsingException {
+    // Check that all-expansion behaves just like any other expansion flag and can be filtered
+    // by invocation policy.
+    InvocationPolicy.Builder invocationPolicyBuilder = InvocationPolicy.newBuilder();
+    invocationPolicyBuilder.addFlagPoliciesBuilder()
+        .setFlagName("incompatible_A")
+        .setUseDefault(UseDefault.getDefaultInstance())
+        .build();
+    InvocationPolicy policy = invocationPolicyBuilder.build();
+    InvocationPolicyEnforcer enforcer = new InvocationPolicyEnforcer(policy);
+
+    OptionsParser parser =
+        OptionsParser.newOptionsParser(ExampleOptions.class);
+    parser.parse("--all");
+    enforcer.enforce(parser);
+
+    ExampleOptions opts = parser.getOptions(ExampleOptions.class);
+    assertThat(opts.x).isFalse();
+    assertThat(opts.y).isTrue();
+    assertThat(opts.incompatibleA).isFalse(); // A should have been removed from the expansion.
+    assertThat(opts.incompatibleB).isTrue(); // B, without a policy, should have been left alone.
+  }
+
   // There's no unit test to check that the expansion of --all is sorted. IsolatedOptionsData is not
   // exposed from OptionsParser, making it difficult to check, and it's not clear that exposing it
   // would be worth it.