Add unit tests for ByIDRequestUrlTemplate function in graphcustom pac…

…kage; validate various endpoint configurations and expected URL outputs to ensure correct URL construction.

internal/client/graphcustom/url_templates_test.go

@@ -0,0 +1,117 @@
+package graphcustom
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestByIDRequestUrlTemplate(t *testing.T) {
+	tests := []struct {
+		name     string
+		config   GetRequestConfig
+		expected string
+	}{
+		{
+			name: "basic endpoint with ID pattern",
+			config: GetRequestConfig{
+				Endpoint:          "/deviceManagement/configurationPolicies",
+				ResourceIDPattern: "('id')",
+				ResourceID:        "12345",
+			},
+			expected: "{+baseurl}/deviceManagement/configurationPolicies('12345')",
+		},
+		{
+			name: "endpoint with ID pattern and suffix",
+			config: GetRequestConfig{
+				Endpoint:          "/deviceManagement/configurationPolicies",
+				ResourceIDPattern: "('id')",
+				ResourceID:        "12345",
+				EndpointSuffix:    "/settings",
+			},
+			expected: "{+baseurl}/deviceManagement/configurationPolicies('12345')/settings",
+		},
+		{
+			name: "endpoint without leading slash",
+			config: GetRequestConfig{
+				Endpoint:          "deviceManagement/configurationPolicies",
+				ResourceIDPattern: "('id')",
+				ResourceID:        "12345",
+			},
+			expected: "{+baseurl}deviceManagement/configurationPolicies('12345')",
+		},
+		{
+			name: "endpoint with different ID pattern format",
+			config: GetRequestConfig{
+				Endpoint:          "/users",
+				ResourceIDPattern: "(id)",
+				ResourceID:        "user@contoso.com",
+			},
+			expected: "{+baseurl}/users(user@contoso.com)",
+		},
+		{
+			name: "complex ID with special characters",
+			config: GetRequestConfig{
+				Endpoint:          "/deviceManagement/configurationPolicies",
+				ResourceIDPattern: "('id')",
+				ResourceID:        "12345-67890-abcdef",
+			},
+			expected: "{+baseurl}/deviceManagement/configurationPolicies('12345-67890-abcdef')",
+		},
+		{
+			name: "endpoint with multiple path segments and suffix",
+			config: GetRequestConfig{
+				Endpoint:          "/users/mailFolders/messages",
+				ResourceIDPattern: "('id')",
+				ResourceID:        "ABC123",
+				EndpointSuffix:    "/attachments",
+			},
+			expected: "{+baseurl}/users/mailFolders/messages('ABC123')/attachments",
+		},
+		{
+			name: "empty suffix",
+			config: GetRequestConfig{
+				Endpoint:          "/deviceManagement/configurationPolicies",
+				ResourceIDPattern: "('id')",
+				ResourceID:        "12345",
+				EndpointSuffix:    "",
+			},
+			expected: "{+baseurl}/deviceManagement/configurationPolicies('12345')",
+		},
+		{
+			name: "suffix without leading slash",
+			config: GetRequestConfig{
+				Endpoint:          "/deviceManagement/configurationPolicies",
+				ResourceIDPattern: "('id')",
+				ResourceID:        "12345",
+				EndpointSuffix:    "settings",
+			},
+			expected: "{+baseurl}/deviceManagement/configurationPolicies('12345')settings",
+		},
+		{
+			name: "GUID in resource ID",
+			config: GetRequestConfig{
+				Endpoint:          "/deviceManagement/configurationPolicies",
+				ResourceIDPattern: "('id')",
+				ResourceID:        "d557c813-b8e5-4efc-b00e-9c0bd5fd10df",
+			},
+			expected: "{+baseurl}/deviceManagement/configurationPolicies('d557c813-b8e5-4efc-b00e-9c0bd5fd10df')",
+		},
+		{
+			name: "empty resource ID",
+			config: GetRequestConfig{
+				Endpoint:          "/deviceManagement/configurationPolicies",
+				ResourceIDPattern: "('id')",
+				ResourceID:        "",
+			},
+			expected: "{+baseurl}/deviceManagement/configurationPolicies('')",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := ByIDRequestUrlTemplate(tt.config)
+			assert.Equal(t, tt.expected, result, "URL template should match expected value")
+		})
+	}
+}