test: add basic pkg/config tests

pkg/config/config_test.go

@@ -0,0 +1,106 @@
+package config
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"github.com/isometry/platform-health/pkg/provider"
+	"github.com/isometry/platform-health/pkg/provider/mock"
+	"github.com/isometry/platform-health/pkg/utils"
+)
+
+func init() {
+	log = utils.ContextLogger(context.TODO())
+}
+
+func TestGetInstances(t *testing.T) {
+	tests := []struct {
+		name     string
+		config   *concreteConfig
+		expected []provider.Instance
+	}{
+		{
+			name:     "EmptyConfig",
+			config:   &concreteConfig{},
+			expected: []provider.Instance{},
+		},
+		{
+			name: "PopulatedConfig",
+			config: &concreteConfig{
+				"provider1": []provider.Instance{
+					&mock.Mock{Name: "1"},
+					&mock.Mock{Name: "2"},
+				},
+				"provider2": []provider.Instance{
+					&mock.Mock{Name: "3"},
+				},
+			},
+			expected: []provider.Instance{
+				&mock.Mock{Name: "1"},
+				&mock.Mock{Name: "2"},
+				&mock.Mock{Name: "3"},
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			instances := tt.config.GetInstances()
+			assert.Equal(t, tt.expected, instances)
+		})
+	}
+}
+
+func TestHarden(t *testing.T) {
+	tests := []struct {
+		name     string
+		abstract abstractConfig
+		expected concreteConfig
+	}{
+		{
+			name:     "Empty Config",
+			abstract: abstractConfig{},
+			expected: concreteConfig{},
+		},
+		{
+			name: "Simple Config",
+			abstract: abstractConfig{
+				"mock": []any{
+					map[string]any{"Name": "1"},
+					map[string]any{"Name": "2"},
+				},
+			},
+			expected: concreteConfig{
+				"mock": []provider.Instance{
+					&mock.Mock{Name: "1", Health: 1, Sleep: 1},
+					&mock.Mock{Name: "2", Health: 1, Sleep: 1},
+				},
+			},
+		},
+		{
+			name: "Invalid Config",
+			abstract: abstractConfig{
+				"mock": "invalid",
+			},
+			expected: concreteConfig{},
+		},
+		{
+			name: "Unknown Provider",
+			abstract: abstractConfig{
+				"unknown": []any{
+					map[string]any{"Name": "1"},
+				},
+			},
+			expected: concreteConfig{},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := tt.abstract.harden()
+			assert.Equal(t, &tt.expected, result)
+		})
+	}
+}