added unit tests

yb-voyager/cmd/migration_complexity_test.go

@@ -0,0 +1,134 @@
+//go:build unit
+
+/*
+Copyright (c) YugabyteDB, Inc.
+
+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 cmd
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/yugabyte/yb-voyager/yb-voyager/src/constants"
+)
+
+func TestGetComplexityForLevel(t *testing.T) {
+	testCases := []struct {
+		level    string
+		count    int
+		expected string
+		desc     string
+	}{
+		// -------------------------------
+		// LEVEL_1 test cases
+		// -------------------------------
+		{
+			level:    constants.IMPACT_LEVEL_1,
+			count:    0,
+			expected: constants.MIGRATION_COMPLEXITY_LOW,
+			desc:     "L1, count=0 => LOW",
+		},
+		{
+			level:    constants.IMPACT_LEVEL_1,
+			count:    20,
+			expected: constants.MIGRATION_COMPLEXITY_LOW,
+			desc:     "L1, count=20 => LOW",
+		},
+		{
+			level:    constants.IMPACT_LEVEL_1,
+			count:    21,
+			expected: constants.MIGRATION_COMPLEXITY_MEDIUM,
+			desc:     "L1, count=21 => MEDIUM",
+		},
+		{
+			level:    constants.IMPACT_LEVEL_1,
+			count:    999999999,
+			expected: constants.MIGRATION_COMPLEXITY_MEDIUM,
+			desc:     "L1, big count => MEDIUM",
+		},
+
+		// -------------------------------
+		// LEVEL_2 test cases
+		// -------------------------------
+		{
+			level:    constants.IMPACT_LEVEL_2,
+			count:    0,
+			expected: constants.MIGRATION_COMPLEXITY_LOW,
+			desc:     "L2, count=0 => LOW",
+		},
+		{
+			level:    constants.IMPACT_LEVEL_2,
+			count:    10,
+			expected: constants.MIGRATION_COMPLEXITY_LOW,
+			desc:     "L2, count=10 => LOW",
+		},
+		{
+			level:    constants.IMPACT_LEVEL_2,
+			count:    11,
+			expected: constants.MIGRATION_COMPLEXITY_MEDIUM,
+			desc:     "L2, count=11 => MEDIUM",
+		},
+		{
+			level:    constants.IMPACT_LEVEL_2,
+			count:    100,
+			expected: constants.MIGRATION_COMPLEXITY_MEDIUM,
+			desc:     "L2, count=100 => MEDIUM",
+		},
+		{
+			level:    constants.IMPACT_LEVEL_2,
+			count:    101,
+			expected: constants.MIGRATION_COMPLEXITY_HIGH,
+			desc:     "L2, count=101 => HIGH",
+		},
+
+		// -------------------------------
+		// LEVEL_3 test cases
+		// -------------------------------
+		{
+			level:    constants.IMPACT_LEVEL_3,
+			count:    0,
+			expected: constants.MIGRATION_COMPLEXITY_LOW,
+			desc:     "L3, count=0 => LOW",
+		},
+		{
+			level:    constants.IMPACT_LEVEL_3,
+			count:    1,
+			expected: constants.MIGRATION_COMPLEXITY_MEDIUM,
+			desc:     "L3, count=1 => MEDIUM",
+		},
+		{
+			level:    constants.IMPACT_LEVEL_3,
+			count:    4,
+			expected: constants.MIGRATION_COMPLEXITY_MEDIUM,
+			desc:     "L3, count=4 => MEDIUM",
+		},
+		{
+			level:    constants.IMPACT_LEVEL_3,
+			count:    5,
+			expected: constants.MIGRATION_COMPLEXITY_HIGH,
+			desc:     "L3, count=5 => HIGH",
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.desc, func(t *testing.T) {
+			actual := getComplexityForLevel(tc.level, tc.count)
+			assert.Equal(t, tc.expected, actual,
+				"Level=%s, Count=%d => Expected %s, Got %s",
+				tc.level, tc.count, tc.expected, actual,
+			)
+		})
+	}
+}