diff --git a/phosphor-power-sequencer/test/config_file_parser_error_tests.cpp b/phosphor-power-sequencer/test/config_file_parser_error_tests.cpp
new file mode 100644
index 0000000..9af389a
--- /dev/null
+++ b/phosphor-power-sequencer/test/config_file_parser_error_tests.cpp
@@ -0,0 +1,53 @@
+/**
+ * Copyright © 2024 IBM Corporation
+ *
+ * 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
+ *
+ *     http://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.
+ */
+#include "config_file_parser_error.hpp"
+
+#include <filesystem>
+
+#include <gtest/gtest.h>
+
+using namespace phosphor::power::sequencer;
+
+TEST(ConfigFileParserErrorTests, Constructor)
+{
+    std::filesystem::path pathName{
+        "/usr/share/phosphor-power-sequencer/foo.json"};
+    ConfigFileParserError error{pathName, "Required property missing"};
+    EXPECT_EQ(error.getPathName(), pathName);
+    EXPECT_STREQ(
+        error.what(),
+        "ConfigFileParserError: /usr/share/phosphor-power-sequencer/foo.json: "
+        "Required property missing");
+}
+
+TEST(ConfigFileParserErrorTests, GetPathName)
+{
+    std::filesystem::path pathName{
+        "/usr/share/phosphor-power-sequencer/bar.json"};
+    ConfigFileParserError error{pathName, "Required property missing"};
+    EXPECT_EQ(error.getPathName(), pathName);
+}
+
+TEST(ConfigFileParserErrorTests, What)
+{
+    std::filesystem::path pathName{
+        "/usr/share/phosphor-power-sequencer/bar.json"};
+    ConfigFileParserError error{pathName, "Required property missing"};
+    EXPECT_STREQ(
+        error.what(),
+        "ConfigFileParserError: /usr/share/phosphor-power-sequencer/bar.json: "
+        "Required property missing");
+}
diff --git a/phosphor-power-sequencer/test/config_file_parser_tests.cpp b/phosphor-power-sequencer/test/config_file_parser_tests.cpp
new file mode 100644
index 0000000..bfc9680
--- /dev/null
+++ b/phosphor-power-sequencer/test/config_file_parser_tests.cpp
@@ -0,0 +1,877 @@
+/**
+ * Copyright © 2024 IBM Corporation
+ *
+ * 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
+ *
+ *     http://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.
+ */
+#include "config_file_parser.hpp"
+#include "config_file_parser_error.hpp"
+#include "rail.hpp"
+#include "temporary_file.hpp"
+
+#include <sys/stat.h> // for chmod()
+
+#include <nlohmann/json.hpp>
+
+#include <cstdint>
+#include <exception>
+#include <filesystem>
+#include <fstream>
+#include <memory>
+#include <optional>
+#include <stdexcept>
+#include <string>
+#include <vector>
+
+#include <gtest/gtest.h>
+
+using namespace phosphor::power::sequencer;
+using namespace phosphor::power::sequencer::config_file_parser;
+using namespace phosphor::power::sequencer::config_file_parser::internal;
+using json = nlohmann::json;
+using TemporaryFile = phosphor::power::util::TemporaryFile;
+
+void writeConfigFile(const std::filesystem::path& pathName,
+                     const std::string& contents)
+{
+    std::ofstream file{pathName};
+    file << contents;
+}
+
+void writeConfigFile(const std::filesystem::path& pathName,
+                     const json& contents)
+{
+    std::ofstream file{pathName};
+    file << contents;
+}
+
+TEST(ConfigFileParserTests, Parse)
+{
+    // Test where works
+    {
+        const json configFileContents = R"(
+            {
+                "rails": [
+                    {
+                        "name": "VDD_CPU0",
+                        "page": 11,
+                        "check_status_vout": true
+                    },
+                    {
+                        "name": "VCS_CPU1",
+                        "presence": "/xyz/openbmc_project/inventory/system/chassis/motherboard/cpu1",
+                        "gpio": { "line": 60 }
+                    }
+                ]
+            }
+        )"_json;
+
+        TemporaryFile configFile;
+        std::filesystem::path pathName{configFile.getPath()};
+        writeConfigFile(pathName, configFileContents);
+
+        std::vector<std::unique_ptr<Rail>> rails = parse(pathName);
+
+        EXPECT_EQ(rails.size(), 2);
+        EXPECT_EQ(rails[0]->getName(), "VDD_CPU0");
+        EXPECT_EQ(rails[1]->getName(), "VCS_CPU1");
+    }
+
+    // Test where fails: File does not exist
+    {
+        std::filesystem::path pathName{"/tmp/non_existent_file"};
+        EXPECT_THROW(parse(pathName), ConfigFileParserError);
+    }
+
+    // Test where fails: File is not readable
+    {
+        const json configFileContents = R"(
+            {
+                "rails": [
+                    {
+                        "name": "VDD_CPU0"
+                    }
+                ]
+            }
+        )"_json;
+
+        TemporaryFile configFile;
+        std::filesystem::path pathName{configFile.getPath()};
+        writeConfigFile(pathName, configFileContents);
+
+        chmod(pathName.c_str(), 0222);
+        EXPECT_THROW(parse(pathName), ConfigFileParserError);
+    }
+
+    // Test where fails: File is not valid JSON
+    {
+        const std::string configFileContents = "] foo [";
+
+        TemporaryFile configFile;
+        std::filesystem::path pathName{configFile.getPath()};
+        writeConfigFile(pathName, configFileContents);
+
+        EXPECT_THROW(parse(pathName), ConfigFileParserError);
+    }
+
+    // Test where fails: JSON does not conform to config file format
+    {
+        const json configFileContents = R"( [ "foo", "bar" ] )"_json;
+
+        TemporaryFile configFile;
+        std::filesystem::path pathName{configFile.getPath()};
+        writeConfigFile(pathName, configFileContents);
+
+        EXPECT_THROW(parse(pathName), ConfigFileParserError);
+    }
+}
+
+TEST(ConfigFileParserTests, GetRequiredProperty)
+{
+    // Test where property exists
+    {
+        const json element = R"( { "name": "VDD_CPU0" } )"_json;
+        const json& propertyElement = getRequiredProperty(element, "name");
+        EXPECT_EQ(propertyElement.get<std::string>(), "VDD_CPU0");
+    }
+
+    // Test where property does not exist
+    try
+    {
+        const json element = R"( { "foo": 23 } )"_json;
+        getRequiredProperty(element, "name");
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Required property missing: name");
+    }
+}
+
+TEST(ConfigFileParserTests, ParseBoolean)
+{
+    // Test where works: true
+    {
+        const json element = R"( true )"_json;
+        bool value = parseBoolean(element);
+        EXPECT_EQ(value, true);
+    }
+
+    // Test where works: false
+    {
+        const json element = R"( false )"_json;
+        bool value = parseBoolean(element);
+        EXPECT_EQ(value, false);
+    }
+
+    // Test where fails: Element is not a boolean
+    try
+    {
+        const json element = R"( 1 )"_json;
+        parseBoolean(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not a boolean");
+    }
+}
+
+TEST(ConfigFileParserTests, ParseGPIO)
+{
+    // Test where works: Only required properties specified
+    {
+        const json element = R"(
+            {
+                "line": 60
+            }
+        )"_json;
+        GPIO gpio = parseGPIO(element);
+        EXPECT_EQ(gpio.line, 60);
+        EXPECT_FALSE(gpio.activeLow);
+    }
+
+    // Test where works: All properties specified
+    {
+        const json element = R"(
+            {
+                "line": 131,
+                "active_low": true
+            }
+        )"_json;
+        GPIO gpio = parseGPIO(element);
+        EXPECT_EQ(gpio.line, 131);
+        EXPECT_TRUE(gpio.activeLow);
+    }
+
+    // Test where fails: Element is not an object
+    try
+    {
+        const json element = R"( [ "vdda", "vddb" ] )"_json;
+        parseGPIO(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not an object");
+    }
+
+    // Test where fails: Required line property not specified
+    try
+    {
+        const json element = R"(
+            {
+                "active_low": true
+            }
+        )"_json;
+        parseGPIO(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Required property missing: line");
+    }
+
+    // Test where fails: line value is invalid
+    try
+    {
+        const json element = R"(
+            {
+                "line": -131,
+                "active_low": true
+            }
+        )"_json;
+        parseGPIO(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not an unsigned integer");
+    }
+
+    // Test where fails: active_low value is invalid
+    try
+    {
+        const json element = R"(
+            {
+                "line": 131,
+                "active_low": "true"
+            }
+        )"_json;
+        parseGPIO(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not a boolean");
+    }
+
+    // Test where fails: Invalid property specified
+    try
+    {
+        const json element = R"(
+            {
+                "line": 131,
+                "foo": "bar"
+            }
+        )"_json;
+        parseGPIO(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element contains an invalid property");
+    }
+}
+
+TEST(ConfigFileParserTests, ParseRail)
+{
+    // Test where works: Only required properties specified
+    {
+        const json element = R"(
+            {
+                "name": "VDD_CPU0"
+            }
+        )"_json;
+        std::unique_ptr<Rail> rail = parseRail(element);
+        EXPECT_EQ(rail->getName(), "VDD_CPU0");
+        EXPECT_FALSE(rail->getPresence().has_value());
+        EXPECT_FALSE(rail->getPage().has_value());
+        EXPECT_FALSE(rail->getCheckStatusVout());
+        EXPECT_FALSE(rail->getCompareVoltageToLimits());
+        EXPECT_FALSE(rail->getGPIO().has_value());
+    }
+
+    // Test where works: All properties specified
+    {
+        const json element = R"(
+            {
+                "name": "VCS_CPU1",
+                "presence": "/xyz/openbmc_project/inventory/system/chassis/motherboard/cpu1",
+                "page": 11,
+                "check_status_vout": true,
+                "compare_voltage_to_limits": true,
+                "gpio": { "line": 60, "active_low": true }
+            }
+        )"_json;
+        std::unique_ptr<Rail> rail = parseRail(element);
+        EXPECT_EQ(rail->getName(), "VCS_CPU1");
+        EXPECT_TRUE(rail->getPresence().has_value());
+        EXPECT_EQ(
+            rail->getPresence().value(),
+            "/xyz/openbmc_project/inventory/system/chassis/motherboard/cpu1");
+        EXPECT_TRUE(rail->getPage().has_value());
+        EXPECT_EQ(rail->getPage().value(), 11);
+        EXPECT_TRUE(rail->getCheckStatusVout());
+        EXPECT_TRUE(rail->getCompareVoltageToLimits());
+        EXPECT_TRUE(rail->getGPIO().has_value());
+        EXPECT_EQ(rail->getGPIO().value().line, 60);
+        EXPECT_TRUE(rail->getGPIO().value().activeLow);
+    }
+
+    // Test where fails: Element is not an object
+    try
+    {
+        const json element = R"( [ "vdda", "vddb" ] )"_json;
+        parseRail(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not an object");
+    }
+
+    // Test where fails: Required name property not specified
+    try
+    {
+        const json element = R"(
+            {
+                "page": 11
+            }
+        )"_json;
+        parseRail(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Required property missing: name");
+    }
+
+    // Test where fails: name value is invalid
+    try
+    {
+        const json element = R"(
+            {
+                "name": 31,
+                "page": 11
+            }
+        )"_json;
+        parseRail(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not a string");
+    }
+
+    // Test where fails: presence value is invalid
+    try
+    {
+        const json element = R"(
+            {
+                "name": "VCS_CPU1",
+                "presence": false
+            }
+        )"_json;
+        parseRail(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not a string");
+    }
+
+    // Test where fails: page value is invalid
+    try
+    {
+        const json element = R"(
+            {
+                "name": "VCS_CPU1",
+                "page": 256
+            }
+        )"_json;
+        parseRail(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not an 8-bit unsigned integer");
+    }
+
+    // Test where fails: check_status_vout value is invalid
+    try
+    {
+        const json element = R"(
+            {
+                "name": "VCS_CPU1",
+                "check_status_vout": "false"
+            }
+        )"_json;
+        parseRail(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not a boolean");
+    }
+
+    // Test where fails: compare_voltage_to_limits value is invalid
+    try
+    {
+        const json element = R"(
+            {
+                "name": "VCS_CPU1",
+                "compare_voltage_to_limits": 23
+            }
+        )"_json;
+        parseRail(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not a boolean");
+    }
+
+    // Test where fails: gpio value is invalid
+    try
+    {
+        const json element = R"(
+            {
+                "name": "VCS_CPU1",
+                "gpio": 131
+            }
+        )"_json;
+        parseRail(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not an object");
+    }
+
+    // Test where fails: check_status_vout is true and page not specified
+    try
+    {
+        const json element = R"(
+            {
+                "name": "VCS_CPU1",
+                "check_status_vout": true
+            }
+        )"_json;
+        parseRail(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Required property missing: page");
+    }
+
+    // Test where fails: compare_voltage_to_limits is true and page not
+    // specified
+    try
+    {
+        const json element = R"(
+            {
+                "name": "VCS_CPU1",
+                "compare_voltage_to_limits": true
+            }
+        )"_json;
+        parseRail(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Required property missing: page");
+    }
+
+    // Test where fails: Invalid property specified
+    try
+    {
+        const json element = R"(
+            {
+                "name": "VCS_CPU1",
+                "foo": "bar"
+            }
+        )"_json;
+        parseRail(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element contains an invalid property");
+    }
+}
+
+TEST(ConfigFileParserTests, ParseRailArray)
+{
+    // Test where works: Array is empty
+    {
+        const json element = R"(
+            [
+            ]
+        )"_json;
+        std::vector<std::unique_ptr<Rail>> rails = parseRailArray(element);
+        EXPECT_EQ(rails.size(), 0);
+    }
+
+    // Test where works: Array is not empty
+    {
+        const json element = R"(
+            [
+                { "name": "VDD_CPU0" },
+                { "name": "VCS_CPU1" }
+            ]
+        )"_json;
+        std::vector<std::unique_ptr<Rail>> rails = parseRailArray(element);
+        EXPECT_EQ(rails.size(), 2);
+        EXPECT_EQ(rails[0]->getName(), "VDD_CPU0");
+        EXPECT_EQ(rails[1]->getName(), "VCS_CPU1");
+    }
+
+    // Test where fails: Element is not an array
+    try
+    {
+        const json element = R"(
+            {
+                "foo": "bar"
+            }
+        )"_json;
+        parseRailArray(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not an array");
+    }
+
+    // Test where fails: Element within array is invalid
+    try
+    {
+        const json element = R"(
+            [
+                { "name": "VDD_CPU0" },
+                23
+            ]
+        )"_json;
+        parseRailArray(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not an object");
+    }
+}
+
+TEST(ConfigFileParserTests, ParseRoot)
+{
+    // Test where works
+    {
+        const json element = R"(
+            {
+                "rails": [
+                    {
+                        "name": "VDD_CPU0",
+                        "page": 11,
+                        "check_status_vout": true
+                    },
+                    {
+                        "name": "VCS_CPU1",
+                        "presence": "/xyz/openbmc_project/inventory/system/chassis/motherboard/cpu1",
+                        "gpio": { "line": 60 }
+                    }
+                ]
+            }
+        )"_json;
+        std::vector<std::unique_ptr<Rail>> rails = parseRoot(element);
+        EXPECT_EQ(rails.size(), 2);
+        EXPECT_EQ(rails[0]->getName(), "VDD_CPU0");
+        EXPECT_EQ(rails[1]->getName(), "VCS_CPU1");
+    }
+
+    // Test where fails: Element is not an object
+    try
+    {
+        const json element = R"( [ "VDD_CPU0", "VCS_CPU1" ] )"_json;
+        parseRoot(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not an object");
+    }
+
+    // Test where fails: Required rails property not specified
+    try
+    {
+        const json element = R"(
+            {
+            }
+        )"_json;
+        parseRoot(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Required property missing: rails");
+    }
+
+    // Test where fails: rails value is invalid
+    try
+    {
+        const json element = R"(
+            {
+                "rails": 31
+            }
+        )"_json;
+        parseRoot(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not an array");
+    }
+
+    // Test where fails: Invalid property specified
+    try
+    {
+        const json element = R"(
+            {
+                "rails": [
+                    {
+                        "name": "VDD_CPU0",
+                        "page": 11,
+                        "check_status_vout": true
+                    }
+                ],
+                "foo": true
+            }
+        )"_json;
+        parseRoot(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element contains an invalid property");
+    }
+}
+
+TEST(ConfigFileParserTests, ParseString)
+{
+    // Test where works: Empty string
+    {
+        const json element = "";
+        std::string value = parseString(element, true);
+        EXPECT_EQ(value, "");
+    }
+
+    // Test where works: Non-empty string
+    {
+        const json element = "vdd_cpu1";
+        std::string value = parseString(element, false);
+        EXPECT_EQ(value, "vdd_cpu1");
+    }
+
+    // Test where fails: Element is not a string
+    try
+    {
+        const json element = R"( { "foo": "bar" } )"_json;
+        parseString(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not a string");
+    }
+
+    // Test where fails: Empty string
+    try
+    {
+        const json element = "";
+        parseString(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element contains an empty string");
+    }
+}
+
+TEST(ConfigFileParserTests, ParseUint8)
+{
+    // Test where works: 0
+    {
+        const json element = R"( 0 )"_json;
+        uint8_t value = parseUint8(element);
+        EXPECT_EQ(value, 0);
+    }
+
+    // Test where works: UINT8_MAX
+    {
+        const json element = R"( 255 )"_json;
+        uint8_t value = parseUint8(element);
+        EXPECT_EQ(value, 255);
+    }
+
+    // Test where fails: Element is not an integer
+    try
+    {
+        const json element = R"( 1.03 )"_json;
+        parseUint8(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not an integer");
+    }
+
+    // Test where fails: Value < 0
+    try
+    {
+        const json element = R"( -1 )"_json;
+        parseUint8(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not an 8-bit unsigned integer");
+    }
+
+    // Test where fails: Value > UINT8_MAX
+    try
+    {
+        const json element = R"( 256 )"_json;
+        parseUint8(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not an 8-bit unsigned integer");
+    }
+}
+
+TEST(ConfigFileParserTests, ParseUnsignedInteger)
+{
+    // Test where works: 1
+    {
+        const json element = R"( 1 )"_json;
+        unsigned int value = parseUnsignedInteger(element);
+        EXPECT_EQ(value, 1);
+    }
+
+    // Test where fails: Element is not an integer
+    try
+    {
+        const json element = R"( 1.5 )"_json;
+        parseUnsignedInteger(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not an unsigned integer");
+    }
+
+    // Test where fails: Value < 0
+    try
+    {
+        const json element = R"( -1 )"_json;
+        parseUnsignedInteger(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not an unsigned integer");
+    }
+}
+
+TEST(ConfigFileParserTests, VerifyIsArray)
+{
+    // Test where element is an array
+    {
+        const json element = R"( [ "foo", "bar" ] )"_json;
+        verifyIsArray(element);
+    }
+
+    // Test where element is not an array
+    try
+    {
+        const json element = R"( { "foo": "bar" } )"_json;
+        verifyIsArray(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not an array");
+    }
+}
+
+TEST(ConfigFileParserTests, VerifyIsObject)
+{
+    // Test where element is an object
+    {
+        const json element = R"( { "foo": "bar" } )"_json;
+        verifyIsObject(element);
+    }
+
+    // Test where element is not an object
+    try
+    {
+        const json element = R"( [ "foo", "bar" ] )"_json;
+        verifyIsObject(element);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element is not an object");
+    }
+}
+
+TEST(ConfigFileParserTests, VerifyPropertyCount)
+{
+    // Test where element has expected number of properties
+    {
+        const json element = R"(
+            {
+                "line": 131,
+                "active_low": true
+            }
+        )"_json;
+        verifyPropertyCount(element, 2);
+    }
+
+    // Test where element has unexpected number of properties
+    try
+    {
+        const json element = R"(
+            {
+                "line": 131,
+                "active_low": true,
+                "foo": 1.3
+            }
+        )"_json;
+        verifyPropertyCount(element, 2);
+        ADD_FAILURE() << "Should not have reached this line.";
+    }
+    catch (const std::invalid_argument& e)
+    {
+        EXPECT_STREQ(e.what(), "Element contains an invalid property");
+    }
+}
diff --git a/phosphor-power-sequencer/test/meson.build b/phosphor-power-sequencer/test/meson.build
index ab03041..4f6b167 100644
--- a/phosphor-power-sequencer/test/meson.build
+++ b/phosphor-power-sequencer/test/meson.build
@@ -1,5 +1,7 @@
 test('phosphor-power-sequencer-tests',
      executable('phosphor-power-sequencer-tests',
+                'config_file_parser_error_tests.cpp',
+                'config_file_parser_tests.cpp',
                 'rail_tests.cpp',
                 dependencies: [
                     gtest,
@@ -7,10 +9,15 @@
                 ],
                 link_args: dynamic_linker,
                 build_rpath: get_option('oe-sdk').allowed() ? rpath : '',
+                link_with: [
+                    phosphor_power_sequencer_library,
+                    libpower
+                ],
                 implicit_include_directories: false,
                 include_directories: [
                     '.',
-                    '../src'
+                    '../src',
+                    '../..'
                 ]
      )
 )