soong: Add tests for depending on disabled module

This will check if direct deps of android.Module type is "Enabled()".
Previously, this is checked only if a module calls VisitDeps*()
functions in GenerateAndroidBuildActions().

Most modules call VisitDeps*() in GenerateAndroidBuildActions(),
but some modules don't. For example, "apex" module calls
WalkDepsBlueprint() or VisitDirectDepsBlueprint() since it
exceptionally depends on non-android.Module modules.

Therefore, when an apex module depends on disabled(enabled:false) module,
build fails with panic, which is fixed by this change.

Test: m # runs soong tests
Change-Id: I81c5c148bbd51a253d2904690eb76ae7b6df1a0f

cc/cc_test.go

@@ -2264,6 +2264,24 @@ func TestStaticDepsOrderWithStubs(t *testing.T) {
 	}
 }
 
+func TestErrorsIfAModuleDependsOnDisabled(t *testing.T) {
+	testCcError(t, `module "libA" .* depends on disabled module "libB"`, `
+		cc_library {
+			name: "libA",
+			srcs: ["foo.c"],
+			shared_libs: ["libB"],
+			stl: "none",
+		}
+
+		cc_library {
+			name: "libB",
+			srcs: ["foo.c"],
+			enabled: false,
+			stl: "none",
+		}
+	`)
+}
+
 // Simple smoke test for the cc_fuzz target that ensures the rule compiles
 // correctly.
 func TestFuzzTarget(t *testing.T) {