diff --git a/codelab/src/test/codelab/testrunner/BUILD.bazel b/codelab/src/test/codelab/testrunner/BUILD.bazel
new file mode 100644
index 000000000..0a89b7d76
--- /dev/null
+++ b/codelab/src/test/codelab/testrunner/BUILD.bazel
@@ -0,0 +1,199 @@
+load("@rules_java//java:java_library.bzl", "java_library")
+load("//third_party/cel/expr:cel_test.bzl", "cel_test", "make_test_targets", "test_runtime")
+
+package(
+    default_applicable_licenses = ["//:license"],
+    default_testonly = 1,
+)
+
+java_library(
+    name = "basic_user_test",
+    srcs = ["BasicUserTest.java"],
+    deps = [
+        "//bundle:cel",
+        "//runtime:function_binding",
+        "//testing/testrunner:cel_test_context",
+        "//testing/testrunner:cel_user_test_template",
+        "@maven//:junit_junit",
+    ],
+)
+
+java_library(
+    name = "error_output_user_test",
+    srcs = ["ErrorOutputUserTest.java"],
+    deps = [
+        "//testing/testrunner:cel_test_context",
+        "//testing/testrunner:cel_user_test_template",
+        "@maven//:junit_junit",
+    ],
+)
+
+java_library(
+    name = "context_proto_user_test",
+    srcs = ["ContextProtoUserTest.java"],
+    deps = [
+        "//bundle:cel",
+        "//checker:proto_type_mask",
+        "//testing/testrunner:cel_test_context",
+        "//testing/testrunner:cel_user_test_template",
+        "@cel_spec//proto/cel/expr/conformance/proto3:test_all_types_java_proto",
+        "@maven//:junit_junit",
+    ],
+)
+
+java_library(
+    name = "late_function_binding_user_test",
+    srcs = ["LateFunctionBindingUserTest.java"],
+    deps = [
+        "//bundle:cel",
+        "//runtime",
+        "//runtime:function_binding",
+        "//testing/testrunner:cel_test_context",
+        "//testing/testrunner:cel_user_test_template",
+        "@maven//:junit_junit",
+    ],
+)
+
+java_library(
+    name = "custom_variable_binding_user_test",
+    srcs = ["CustomVariableBindingUserTest.java"],
+    deps = [
+        "//bundle:cel",
+        "//runtime:function_binding",
+        "//testing/testrunner:cel_test_context",
+        "//testing/testrunner:cel_user_test_template",
+        "@maven//:com_google_guava_guava",
+        "@maven//:junit_junit",
+    ],
+)
+
+java_library(
+    name = "custom_test_suite",
+    srcs = ["CustomTestSuite.java"],
+    deps = [
+        "//testing/testrunner:annotations",
+        "//testing/testrunner:cel_test_suite",
+        "@maven//:com_google_guava_guava",
+    ],
+)
+
+cel_test(
+    name = "example_0_test",
+    cel_expr = "basictest/expression.cel",
+    config = "basictest/config.yaml",
+    filegroup = "//codelab:testrunner_codelab_resources",  # Users can use exports_files with appropriate visibility in which case filegroup is not required.
+    test_data_path = "//codelab/src/test/codelab/testrunner/resources",
+    test_suite = "basictest/testsuite.yaml",
+    test_targets = [make_test_targets(
+        runtime = test_runtime.JAVA,
+        test_srcs = [":basic_user_test"],
+    )],
+)
+
+cel_test(
+    name = "example_0_test_with_raw_expression",
+    cel_expr = "foo(a) || bar(a) == true",
+    config = "basictest/config.yaml",
+    filegroup = "//codelab:testrunner_codelab_resources",
+    is_raw_expr = True,
+    test_data_path = "//codelab/src/test/codelab/testrunner/resources",
+    test_suite = "basictest/testsuite.yaml",
+    test_targets = [make_test_targets(
+        runtime = test_runtime.JAVA,
+        test_srcs = [":basic_user_test"],
+    )],
+)
+
+cel_test(
+    name = "example_0_test_with_policy",
+    cel_expr = "basictest/policy.yaml",
+    config = "basictest/config.yaml",
+    filegroup = "//codelab:testrunner_codelab_resources",
+    test_data_path = "//codelab/src/test/codelab/testrunner/resources",
+    test_suite = "basictest/testsuite.yaml",
+    test_targets = [make_test_targets(
+        runtime = test_runtime.JAVA,
+        test_srcs = [":basic_user_test"],
+    )],
+)
+
+cel_test(
+    name = "example_1_test",
+    cel_expr = "foo(a) || bar(a) == true",
+    config = "basictest/config.yaml",
+    filegroup = "//codelab:testrunner_codelab_resources",
+    is_raw_expr = True,
+    test_data_path = "//codelab/src/test/codelab/testrunner/resources",
+    test_suite = "unknownoutputtest/testsuite.yaml",
+    test_targets = [make_test_targets(
+        runtime = test_runtime.JAVA,
+        test_srcs = [":basic_user_test"],
+    )],
+)
+
+cel_test(
+    name = "example_2_test",
+    cel_expr = "basictest/policy.yaml",
+    config = "basictest/config.yaml",
+    filegroup = "//codelab:testrunner_codelab_resources",
+    test_data_path = "//codelab/src/test/codelab/testrunner/resources",
+    test_suite = "erroroutputtest/testsuite.yaml",
+    test_targets = [make_test_targets(
+        runtime = test_runtime.JAVA,
+        test_srcs = [":error_output_user_test"],
+    )],
+)
+
+cel_test(
+    name = "example_4_test",
+    cel_expr = "basictest/expression.cel",
+    config = "basictest/config.yaml",
+    filegroup = "//codelab:testrunner_codelab_resources",
+    test_data_path = "//codelab/src/test/codelab/testrunner/resources",
+    test_targets = [make_test_targets(
+        runtime = test_runtime.JAVA,
+        test_srcs = [":basic_user_test"],
+        deps = [":custom_test_suite"],
+    )],
+)
+
+cel_test(
+    name = "example_5_test",
+    cel_expr = "foo(a) || bar(a) == true",
+    config = "basictest/config.yaml",
+    filegroup = "//codelab:testrunner_codelab_resources",
+    is_raw_expr = True,
+    test_data_path = "//codelab/src/test/codelab/testrunner/resources",
+    test_suite = "customvariablebindingtest/testsuite.yaml",
+    test_targets = [make_test_targets(
+        runtime = test_runtime.JAVA,
+        test_srcs = [":custom_variable_binding_user_test"],
+    )],
+)
+
+cel_test(
+    name = "example_6_test",
+    cel_expr = "contextprototest/policy.yaml",
+    config = "contextprototest/config.yaml",
+    filegroup = "//codelab:testrunner_codelab_resources",
+    test_data_path = "//codelab/src/test/codelab/testrunner/resources",
+    test_suite = "contextprototest/testsuite.yaml",
+    test_targets = [make_test_targets(
+        runtime = test_runtime.JAVA,
+        test_srcs = [":context_proto_user_test"],
+    )],
+)
+
+cel_test(
+    name = "example_7_test",
+    cel_expr = "foo(a) || bar(a) == true",
+    config = "basictest/config.yaml",
+    filegroup = "//codelab:testrunner_codelab_resources",
+    is_raw_expr = True,
+    test_data_path = "//codelab/src/test/codelab/testrunner/resources",
+    test_suite = "basictest/testsuite.yaml",
+    test_targets = [make_test_targets(
+        runtime = test_runtime.JAVA,
+        test_srcs = [":late_function_binding_user_test"],
+    )],
+)
diff --git a/codelab/src/test/codelab/testrunner/BasicUserTest.java b/codelab/src/test/codelab/testrunner/BasicUserTest.java
new file mode 100644
index 000000000..367fc54e6
--- /dev/null
+++ b/codelab/src/test/codelab/testrunner/BasicUserTest.java
@@ -0,0 +1,42 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package codelab.testrunner;
+
+import dev.cel.bundle.CelFactory;
+import dev.cel.runtime.CelFunctionBinding;
+import dev.cel.testing.testrunner.CelTestContext;
+import dev.cel.testing.testrunner.CelUserTestTemplate;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+/** A sample basic user test class demonstrating a basic user journey. */
+@RunWith(Parameterized.class)
+public class BasicUserTest extends CelUserTestTemplate {
+
+  public BasicUserTest() {
+    super(
+        CelTestContext.newBuilder()
+            .setCel(
+                CelFactory.standardCelBuilder()
+                    .addFunctionBindings(
+                        CelFunctionBinding.from(
+                            "foo_id", String.class, (String a) -> a.equals("foo")))
+                    .addFunctionBindings(
+                        CelFunctionBinding.from(
+                            "bar_id", String.class, (String a) -> a.equals("bar")))
+                    .build())
+            .build());
+  }
+}
diff --git a/codelab/src/test/codelab/testrunner/ContextProtoUserTest.java b/codelab/src/test/codelab/testrunner/ContextProtoUserTest.java
new file mode 100644
index 000000000..45527ebad
--- /dev/null
+++ b/codelab/src/test/codelab/testrunner/ContextProtoUserTest.java
@@ -0,0 +1,44 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package codelab.testrunner;
+
+import dev.cel.bundle.CelFactory;
+import dev.cel.checker.ProtoTypeMask;
+import dev.cel.expr.conformance.proto3.TestAllTypes;
+import dev.cel.testing.testrunner.CelTestContext;
+import dev.cel.testing.testrunner.CelUserTestTemplate;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+/**
+ * This test demonstrates the use case where the fields of a proto are used as variables in the CEL
+ * expression i.e. context_expr.
+ */
+@RunWith(Parameterized.class)
+public class ContextProtoUserTest extends CelUserTestTemplate {
+
+  public ContextProtoUserTest() {
+    super(
+        CelTestContext.newBuilder()
+            .setCel(
+                CelFactory.standardCelBuilder()
+                    .addFileTypes(TestAllTypes.getDescriptor().getFile())
+                    .addProtoTypeMasks(
+                        ProtoTypeMask.ofAllFields(TestAllTypes.getDescriptor().getFullName())
+                            .withFieldsAsVariableDeclarations())
+                    .build())
+            .build());
+  }
+}
diff --git a/codelab/src/test/codelab/testrunner/CustomTestSuite.java b/codelab/src/test/codelab/testrunner/CustomTestSuite.java
new file mode 100644
index 000000000..84745af3a
--- /dev/null
+++ b/codelab/src/test/codelab/testrunner/CustomTestSuite.java
@@ -0,0 +1,62 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package codelab.testrunner;
+
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.ImmutableSet;
+import dev.cel.testing.testrunner.Annotations.TestSuiteSupplier;
+import dev.cel.testing.testrunner.CelTestSuite;
+import dev.cel.testing.testrunner.CelTestSuite.CelTestSection.CelTestCase.Input.Binding;
+
+public final class CustomTestSuite {
+
+  @TestSuiteSupplier
+  public CelTestSuite getCelTestSuite() {
+    return CelTestSuite.newBuilder()
+        .setDescription("Basic Tests")
+        .setName("basic_tests")
+        .setSections(
+            ImmutableSet.of(
+                CelTestSuite.CelTestSection.newBuilder()
+                    .setName("basic_test_sections")
+                    .setDescription("Basic Tests Sections")
+                    .setTests(
+                        ImmutableSet.of(
+                            CelTestSuite.CelTestSection.CelTestCase.newBuilder()
+                                .setName("true_by_default")
+                                .setDescription(
+                                    "Test that the default value of a function is true.")
+                                .setInput(
+                                    CelTestSuite.CelTestSection.CelTestCase.Input.ofBindings(
+                                        ImmutableMap.of("a", Binding.ofValue("foo"))))
+                                .setOutput(
+                                    CelTestSuite.CelTestSection.CelTestCase.Output.ofResultValue(
+                                        true))
+                                .build(),
+                            CelTestSuite.CelTestSection.CelTestCase.newBuilder()
+                                .setName("false_by_default")
+                                .setDescription(
+                                    "Test that the default value of a function is false.")
+                                .setInput(
+                                    CelTestSuite.CelTestSection.CelTestCase.Input.ofBindings(
+                                        ImmutableMap.of("a", Binding.ofValue("baz"))))
+                                .setOutput(
+                                    CelTestSuite.CelTestSection.CelTestCase.Output.ofResultValue(
+                                        false))
+                                .build()))
+                    .build()))
+        .build();
+  }
+}
diff --git a/codelab/src/test/codelab/testrunner/CustomVariableBindingUserTest.java b/codelab/src/test/codelab/testrunner/CustomVariableBindingUserTest.java
new file mode 100644
index 000000000..3a05b8bed
--- /dev/null
+++ b/codelab/src/test/codelab/testrunner/CustomVariableBindingUserTest.java
@@ -0,0 +1,47 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package codelab.testrunner;
+
+import com.google.common.collect.ImmutableMap;
+import dev.cel.bundle.CelFactory;
+import dev.cel.runtime.CelFunctionBinding;
+import dev.cel.testing.testrunner.CelTestContext;
+import dev.cel.testing.testrunner.CelUserTestTemplate;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+/**
+ * A sample user test class demonstrating custom variable binding in which we don't provide the
+ * input values from testsuite rather programmatically via {@link CelTestContext}.
+ */
+@RunWith(Parameterized.class)
+public class CustomVariableBindingUserTest extends CelUserTestTemplate {
+
+  public CustomVariableBindingUserTest() {
+    super(
+        CelTestContext.newBuilder()
+            .setCel(
+                CelFactory.standardCelBuilder()
+                    .addFunctionBindings(
+                        CelFunctionBinding.from(
+                            "foo_id", String.class, (String a) -> a.equals("foo")))
+                    .addFunctionBindings(
+                        CelFunctionBinding.from(
+                            "bar_id", String.class, (String a) -> a.equals("bar")))
+                    .build())
+            .setVariableBindings(ImmutableMap.of("a", "foo"))
+            .build());
+  }
+}
diff --git a/codelab/src/test/codelab/testrunner/ErrorOutputUserTest.java b/codelab/src/test/codelab/testrunner/ErrorOutputUserTest.java
new file mode 100644
index 000000000..3f4de1e45
--- /dev/null
+++ b/codelab/src/test/codelab/testrunner/ErrorOutputUserTest.java
@@ -0,0 +1,32 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package codelab.testrunner;
+
+import dev.cel.testing.testrunner.CelTestContext;
+import dev.cel.testing.testrunner.CelUserTestTemplate;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+/**
+ * A sample user test class demonstrating error output assertion. Here we don't bind the function
+ * implementations which should result in error.
+ */
+@RunWith(Parameterized.class)
+public class ErrorOutputUserTest extends CelUserTestTemplate {
+
+  public ErrorOutputUserTest() {
+    super(CelTestContext.newBuilder().build());
+  }
+}
diff --git a/codelab/src/test/codelab/testrunner/LateFunctionBindingUserTest.java b/codelab/src/test/codelab/testrunner/LateFunctionBindingUserTest.java
new file mode 100644
index 000000000..a2b44f147
--- /dev/null
+++ b/codelab/src/test/codelab/testrunner/LateFunctionBindingUserTest.java
@@ -0,0 +1,39 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package codelab.testrunner;
+
+import dev.cel.bundle.CelFactory;
+import dev.cel.runtime.CelFunctionBinding;
+import dev.cel.runtime.CelLateFunctionBindings;
+import dev.cel.testing.testrunner.CelTestContext;
+import dev.cel.testing.testrunner.CelUserTestTemplate;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+/** A sample user test class demonstrating late function binding. */
+@RunWith(Parameterized.class)
+public class LateFunctionBindingUserTest extends CelUserTestTemplate {
+
+  public LateFunctionBindingUserTest() {
+    super(
+        CelTestContext.newBuilder()
+            .setCel(CelFactory.standardCelBuilder().build())
+            .setCelLateFunctionBindings(
+                CelLateFunctionBindings.from(
+                    CelFunctionBinding.from("bar_id", String.class, (String a) -> a.equals("bar")),
+                    CelFunctionBinding.from("foo_id", String.class, (String a) -> a.equals("foo"))))
+            .build());
+  }
+}
diff --git a/codelab/src/test/codelab/testrunner/resources/BUILD.bazel b/codelab/src/test/codelab/testrunner/resources/BUILD.bazel
new file mode 100644
index 000000000..84518ac95
--- /dev/null
+++ b/codelab/src/test/codelab/testrunner/resources/BUILD.bazel
@@ -0,0 +1,21 @@
+package(
+    default_applicable_licenses = [
+        "//:license",
+    ],
+    default_testonly = True,
+    default_visibility = [
+        "//codelab:__pkg__",
+    ],
+)
+
+filegroup(
+    name = "testrunner_codelab_data_files",
+    srcs = glob([
+        "**/*.yaml",
+        "**/*.textproto",
+        "**/*.cel",
+        "**/*.celpolicy",
+    ]),
+    tags = [
+    ],
+)
diff --git a/codelab/src/test/codelab/testrunner/resources/basictest/config.yaml b/codelab/src/test/codelab/testrunner/resources/basictest/config.yaml
new file mode 100644
index 000000000..423db293b
--- /dev/null
+++ b/codelab/src/test/codelab/testrunner/resources/basictest/config.yaml
@@ -0,0 +1,34 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: "late_function_binding"
+functions:
+  - name: "foo"
+    overloads:
+      - id: 'foo_id'
+        args:
+          - type_name: 'string'
+        return:
+          type_name: 'bool'
+  - name: "bar"
+    overloads:
+      - id: 'bar_id'
+        args:
+          - type_name: 'string'
+        return:
+          type_name: 'bool'
+variables:
+  - name: "a"
+    type:
+      type_name: 'string'
\ No newline at end of file
diff --git a/codelab/src/test/codelab/testrunner/resources/basictest/expression.cel b/codelab/src/test/codelab/testrunner/resources/basictest/expression.cel
new file mode 100644
index 000000000..fa212241f
--- /dev/null
+++ b/codelab/src/test/codelab/testrunner/resources/basictest/expression.cel
@@ -0,0 +1 @@
+foo(a) || bar(a) == true
\ No newline at end of file
diff --git a/codelab/src/test/codelab/testrunner/resources/basictest/policy.yaml b/codelab/src/test/codelab/testrunner/resources/basictest/policy.yaml
new file mode 100644
index 000000000..e980fcdcf
--- /dev/null
+++ b/codelab/src/test/codelab/testrunner/resources/basictest/policy.yaml
@@ -0,0 +1,20 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: "basic_test"
+rule:
+  match:
+  - condition: foo(a) || bar(a)
+    output: "true"
+  - output: "false"
diff --git a/codelab/src/test/codelab/testrunner/resources/basictest/testsuite.yaml b/codelab/src/test/codelab/testrunner/resources/basictest/testsuite.yaml
new file mode 100644
index 000000000..e3f726675
--- /dev/null
+++ b/codelab/src/test/codelab/testrunner/resources/basictest/testsuite.yaml
@@ -0,0 +1,34 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: "basic_tests"
+description: "Basic Tests"
+sections:
+  - name: "basic_test_sections"
+    description: "Basic Tests Sections"
+    tests:
+    - name: "true_by_default"
+      description: "Test that the default value of a function is true."
+      input:
+        a:
+          expr: "'foo'"
+      output:
+        value: true
+    - name: "false_by_default"
+      description: "Test that the default value of a function is false."
+      input:
+        a:
+          value: "baz"
+      output:
+        value: false
\ No newline at end of file
diff --git a/codelab/src/test/codelab/testrunner/resources/contextprototest/config.yaml b/codelab/src/test/codelab/testrunner/resources/contextprototest/config.yaml
new file mode 100644
index 000000000..2ca7fac42
--- /dev/null
+++ b/codelab/src/test/codelab/testrunner/resources/contextprototest/config.yaml
@@ -0,0 +1,19 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: "context_pb"
+container: "cel.expr.conformance.proto3"
+extensions:
+  - name: "strings"
+    version: "latest"
\ No newline at end of file
diff --git a/codelab/src/test/codelab/testrunner/resources/contextprototest/policy.yaml b/codelab/src/test/codelab/testrunner/resources/contextprototest/policy.yaml
new file mode 100644
index 000000000..8111bb76c
--- /dev/null
+++ b/codelab/src/test/codelab/testrunner/resources/contextprototest/policy.yaml
@@ -0,0 +1,25 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: "context_pb"
+rule:
+  match:
+    - condition: >
+        single_int32 > TestAllTypes{single_int64: 10}.single_int64
+      output: |
+        ["invalid spec, got single_int32=" , single_int32 , ", wanted <= 10"].join()
+    - condition: >
+        standalone_enum == TestAllTypes.NestedEnum.BAR
+      output: |
+        "invalid spec, no nested enums may refer to BAR"
\ No newline at end of file
diff --git a/codelab/src/test/codelab/testrunner/resources/contextprototest/testsuite.yaml b/codelab/src/test/codelab/testrunner/resources/contextprototest/testsuite.yaml
new file mode 100644
index 000000000..d37e2bee3
--- /dev/null
+++ b/codelab/src/test/codelab/testrunner/resources/contextprototest/testsuite.yaml
@@ -0,0 +1,35 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: "context_pb_cel_tests"
+description: "Protobuf input tests"
+sections:
+  - name: "valid"
+    description: "Valid context_expr"
+    tests:
+     - name: "good spec"
+       description: "good spec"
+       context_expr:
+             "TestAllTypes{single_int32: 10}"
+       output:
+        expr: "optional.none()"
+  - name: "invalid"
+    description: "Invalid context_expr"
+    tests:
+     - name: "bad spec"
+       description: "bad spec"
+       context_expr:
+             "TestAllTypes{single_int32: 11}"
+       output:
+         value: "invalid spec, got single_int32=11, wanted <= 10"
\ No newline at end of file
diff --git a/codelab/src/test/codelab/testrunner/resources/customvariablebindingtest/testsuite.yaml b/codelab/src/test/codelab/testrunner/resources/customvariablebindingtest/testsuite.yaml
new file mode 100644
index 000000000..64ce3057d
--- /dev/null
+++ b/codelab/src/test/codelab/testrunner/resources/customvariablebindingtest/testsuite.yaml
@@ -0,0 +1,24 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: "basic_tests"
+description: "Basic Tests"
+sections:
+  - name: "basic_test_sections"
+    description: "Basic Tests Sections"
+    tests:
+    - name: "true_by_default"
+      description: "Test that the default value of a function is true."
+      output:
+        value: true
\ No newline at end of file
diff --git a/codelab/src/test/codelab/testrunner/resources/erroroutputtest/testsuite.yaml b/codelab/src/test/codelab/testrunner/resources/erroroutputtest/testsuite.yaml
new file mode 100644
index 000000000..4773cdfaa
--- /dev/null
+++ b/codelab/src/test/codelab/testrunner/resources/erroroutputtest/testsuite.yaml
@@ -0,0 +1,28 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: "error_output_tests"
+description: "Error Output Tests"
+sections:
+  - name: "error_output_test_sections"
+    description: "Error Output Tests Sections"
+    tests:
+    - name: "true_by_default"
+      description: "Test that the default value of a function is true."
+      input:
+        a:
+          expr: "'foo'"
+      output:
+        error_set:
+        - "evaluation error: No matching overload for function 'foo'. Overload candidates: foo_id"
\ No newline at end of file
diff --git a/codelab/src/test/codelab/testrunner/resources/unknownoutputtest/testsuite.yaml b/codelab/src/test/codelab/testrunner/resources/unknownoutputtest/testsuite.yaml
new file mode 100644
index 000000000..197d790db
--- /dev/null
+++ b/codelab/src/test/codelab/testrunner/resources/unknownoutputtest/testsuite.yaml
@@ -0,0 +1,33 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: "unknown_output_tests"
+description: "Unknown Output Tests"
+sections:
+  - name: "unknown_output_test_sections"
+    description: "Unknown Output Tests Sections"
+    tests:
+    - name: "Unknown Output"
+      description: "Tests that the output is unknown due to input binding missing."
+      output:
+        unknown:
+          - 2
+          - 5
+    - name: "false_by_default"
+      description: "Test that the default value of a function is false."
+      input:
+        a:
+          value: "baz"
+      output:
+        value: false
\ No newline at end of file