Add unit-tests for "noop_provider".

test/BUILD

@@ -8,4 +8,16 @@ cc_test(
         # Google Test dependency remains the same
         "@googletest//:gtest_main",
     ],
-)
+)
+
+cc_test(
+    name = "noop_provider_test",
+    # Path is relative to cpp-sdk/src/test/
+    srcs = ["noop_provider_test.cpp"],
+    deps = [
+        # We reference the library defined in the parent 'src' package
+        "//src:noop_provider",
+        # Google Test dependency remains the same
+        "@googletest//:gtest_main",
+    ],
+)

test/noop_provider_test.cpp

@@ -0,0 +1,58 @@
+#include "openfeature/noop_provider.h"
+
+#include <gtest/gtest.h>
+
+#include "absl/status/status.h"
+
+using namespace openfeature;
+
+class NoopProviderTest : public ::testing::Test {
+ protected:
+  NoopProvider provider;
+  EvaluationContext ctx;
+};
+
+// Test to verify the metadata returned by the provider.
+TEST_F(NoopProviderTest, ShouldReturnProviderNameForMetadata) {
+  const Metadata metadata = provider.GetMetadata();
+  EXPECT_EQ(metadata.name, "Noop Provider");
+}
+
+// Test to verify the Init method returns an OK status.
+TEST_F(NoopProviderTest, InitShouldReturnOkStatus) {
+  const absl::Status status = provider.Init(ctx);
+  EXPECT_EQ(status, absl::OkStatus());
+}
+
+// Test to verify the Shutdown method returns an OK status.
+TEST_F(NoopProviderTest, ShutdownShouldReturnOkStatus) {
+  const absl::Status status = provider.Shutdown();
+  EXPECT_EQ(status, absl::OkStatus());
+}
+
+class NoopProviderBooleanTest : public NoopProviderTest,
+                                public ::testing::WithParamInterface<bool> {};
+
+// Test to verify the boolean evaluation returns the default value.
+TEST_P(NoopProviderBooleanTest, BooleanEvaluationShouldReturnDefaultValue) {
+  const bool defaultValue = GetParam();
+
+  const std::unique_ptr<BoolResolutionDetails> details =
+      provider.GetBooleanEvaluation("my-bool-flag", defaultValue, ctx);
+
+  EXPECT_EQ(details->GetValue(), defaultValue);
+  EXPECT_EQ(details->GetReason(), Reason::kDefault);
+  EXPECT_EQ(details->GetVariant(), "default-variant");
+  EXPECT_FALSE(details->GetErrorCode().has_value());
+  ASSERT_TRUE(details->GetErrorMessage().has_value());
+  EXPECT_TRUE(details->GetErrorMessage()->empty());
+}
+
+INSTANTIATE_TEST_SUITE_P(BooleanDefaultValues, NoopProviderBooleanTest,
+                         testing::Values(true, false));
+
+// Main function to initialize and run all tests.
+int main(int argc, char** argv) {
+  testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}