Migrate CcBinaryConfiguredTargetTest linking tests to Starlark.

lib/private/collection_subject.bzl

@@ -83,6 +83,8 @@ def _collection_subject_new(
         contains_none_of = lambda *a, **k: _collection_subject_contains_none_of(self, *a, **k),
         contains_predicate = lambda *a, **k: _collection_subject_contains_predicate(self, *a, **k),
         has_size = lambda *a, **k: _collection_subject_has_size(self, *a, **k),
+        is_empty = lambda *a, **k: _collection_subject_is_empty(self, *a, **k),
+        is_not_empty = lambda *a, **k: _collection_subject_is_not_empty(self, *a, **k),
         not_contains = lambda *a, **k: _collection_subject_not_contains(self, *a, **k),
         not_contains_predicate = lambda *a, **k: _collection_subject_not_contains_predicate(self, *a, **k),
         offset = lambda *a, **k: _collection_subject_offset(self, *a, **k),
@@ -115,6 +117,23 @@ def _collection_subject_has_size(self, expected):
         meta = self.meta.derive("size()"),
     ).equals(expected)
 
+def _collection_subject_is_empty(self):
+    """Asserts that the collection is empty.
+
+    Method: CollectionSubject.is_empty
+    """
+    return _collection_subject_has_size(self, 0)
+
+def _collection_subject_is_not_empty(self):
+    """Asserts that the collection is not empty.
+
+    Method: CollectionSubject.is_not_empty
+    """
+    return IntSubject.new(
+        len(self.actual),
+        meta = self.meta.derive("size()"),
+    ).not_equals(0)
+
 def _collection_subject_contains(self, expected):
     """Asserts that `expected` is within the collection.
 
@@ -497,6 +516,8 @@ CollectionSubject = struct(
     contains_none_of = _collection_subject_contains_none_of,
     contains_predicate = _collection_subject_contains_predicate,
     has_size = _collection_subject_has_size,
+    is_empty = _collection_subject_is_empty,
+    is_not_empty = _collection_subject_is_not_empty,
     new = _collection_subject_new,
     not_contains_predicate = _collection_subject_not_contains_predicate,
     offset = _collection_subject_offset,

tests/truth_tests.bzl

@@ -300,6 +300,64 @@ def _collection_has_size_test(env, _target):
 
 _suite.append(collection_has_size_test)
 
+def collection_is_empty_test(name):
+    analysis_test(name = name, impl = _collection_is_empty_test, target = "truth_tests_helper")
+
+def _collection_is_empty_test(env, _target):
+    fake_env = _fake_env(env)
+
+    # Test empty collection
+    subject_empty = fake_env.expect.that_collection([])
+    subject_empty.is_empty()
+    _assert_no_failures(
+        fake_env,
+        env = env,
+        msg = "check empty collection is empty",
+    )
+
+    # Test non-empty collection (should fail)
+    subject_non_empty = fake_env.expect.that_collection(["a"])
+    subject_non_empty.is_empty()
+    _assert_failure(
+        fake_env,
+        ["value of: collection.size()", "expected: 0", "actual: 1"],
+        env = env,
+        msg = "check non-empty collection is not empty",
+    )
+
+    _end(env, fake_env)
+
+_suite.append(collection_is_empty_test)
+
+def collection_is_not_empty_test(name):
+    analysis_test(name = name, impl = _collection_is_not_empty_test, target = "truth_tests_helper")
+
+def _collection_is_not_empty_test(env, _target):
+    fake_env = _fake_env(env)
+
+    # Test non-empty collection
+    subject_non_empty = fake_env.expect.that_collection(["a"])
+    subject_non_empty.is_not_empty()
+    _assert_no_failures(
+        fake_env,
+        env = env,
+        msg = "check non-empty collection is not empty",
+    )
+
+    # Test empty collection (should fail)
+    subject_empty = fake_env.expect.that_collection([])
+    subject_empty.is_not_empty()
+    _assert_failure(
+        fake_env,
+        ["value of: collection.size()", "expected not to be: 0", "actual: 0"],
+        env = env,
+        msg = "check empty collection is empty",
+    )
+
+    _end(env, fake_env)
+
+_suite.append(collection_is_not_empty_test)
+
 def collection_contains_test(name):
     analysis_test(name = name, impl = _collection_contains_test, target = "truth_tests_helper")