chore: unit test regressors to match estimator results

Signed-off-by: Huamin Chen <[email protected]>

Author: rootfs

Diff for: pkg/model/estimator/local/regressor/local_test.go

@@ -0,0 +1,67 @@
+/*
+Copyright 2021.
+
+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.
+*/
+
+package regressor
+
+import (
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+	"k8s.io/klog/v2"
+
+	"github.com/sustainable-computing-io/kepler/pkg/config"
+	"github.com/sustainable-computing-io/kepler/pkg/model/types"
+)
+
+var (
+	testNodeFeatureValues = []float64{1000, 1000, 1000, 1000}
+	modelProcessFeatures  = []string{config.CPUTime, config.PageCacheHit}
+)
+
+func testModel(modelURL, trainerType string, core, dram, pkg int) {
+	r := genRegressor(types.AbsPower, types.ComponentEnergySource, "", modelURL, "", trainerType)
+	r.FloatFeatureNames = modelProcessFeatures
+	err := r.Start()
+	Expect(err).To(BeNil())
+
+	r.ResetSampleIdx()
+	r.AddNodeFeatureValues(testNodeFeatureValues)
+
+	powers, err := r.GetComponentsPower(false)
+	Expect(err).NotTo(HaveOccurred())
+	Expect(len(powers)).Should(Equal(1))
+
+	klog.Infof("Core: %v, DRAM: %v, Pkg: %v", powers[0].Core, powers[0].DRAM, powers[0].Pkg)
+	Expect(powers[0].Core).Should(BeEquivalentTo(core))
+	Expect(powers[0].DRAM).Should(BeEquivalentTo(dram))
+	Expect(powers[0].Pkg).Should(BeEquivalentTo(pkg))
+}
+
+var _ = Describe("Test Regressor Weight Unit (models from URL)", func() {
+	It("Get Node Components Power By SGD Regression with model from URL", func() {
+		// Test power calculation. The results should match those from estimator
+		// https://github.com/sustainable-computing-io/kepler-model-server/pull/493#discussion_r1795610556
+		testModel("https://raw.githubusercontent.com/sustainable-computing-io/kepler-model-db/refs/heads/main/models/v0.7/ec2-0.7.11/rapl-sysfs/AbsPower/BPFOnly/SGDRegressorTrainer_0.json",
+			types.LinearRegressionTrainer, 146994, 18704, 146994)
+	})
+
+	/* FIXME: the test result is Core: 70824, DRAM: 21137, Pkg: 70824, but the estimator result is Core: 59316, DRAM: 14266, Pkg: 59316, per // https://github.com/sustainable-computing-io/kepler-model-server/pull/493#discussion_r1795610556
+	It("Get Node Components Power By Logarithmic Regression with model from URL", func() {
+		testModel("https://raw.githubusercontent.com/sustainable-computing-io/kepler-model-db/refs/heads/main/models/v0.7/ec2-0.7.11/rapl-sysfs/AbsPower/BPFOnly/LogarithmicRegressionTrainer_0.json",
+			types.LogarithmicTrainer, 59316, 14266, 59316)
+	})
+	*/
+
+})