fix: add appium: vendor prefix to iOS capabilities for Appium v3 (#810)

* fix: add appium: vendor prefix to iOS capabilities for Appium v3

Appium v3 enforces the W3C WebDriver spec strictly, requiring
non-standard capabilities to use vendor prefixes. The iOS provider
was sending capabilities like `automationName`, `noReset`, `deviceName`,
`platformVersion`, and `udid` without the required `appium:` prefix,
causing session creation to fail with InvalidArgumentError.

This change prefixes all non-standard capabilities with `appium:` while
leaving standard W3C capabilities (`platformName`, `browserName`)
unprefixed. Backwards-compatible with Appium v2, which accepts both
formats.

Fixes #629

* fix: extract build_ios_capabilities for testable production code path

Addresses review feedback: removes unused `mut manager` warning and
validates the actual capability-building logic instead of reconstructing
JSON inline.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Matt Van Horn <455140+mvanhorn@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Matt Van Horn
2026-03-15 09:22:32 -05:00
committed by GitHub
co-authored by Claude Opus 4.6 Matt Van Horn
parent 77a27fe6a3
commit bc94eaf94f
+60 -21
View File
@@ -40,32 +40,45 @@ impl AppiumManager {
})
}
pub fn build_ios_capabilities(
device_udid: Option<&str>,
device_name: Option<&str>,
platform_version: Option<&str>,
) -> Value {
let mut caps = json!({
"platformName": "iOS",
"appium:automationName": "XCUITest",
"browserName": "Safari",
"appium:noReset": true,
});
if let Some(name) = device_name {
caps["appium:deviceName"] = json!(name);
} else {
caps["appium:deviceName"] = json!("iPhone");
}
if let Some(ver) = platform_version {
caps["appium:platformVersion"] = json!(ver);
}
if let Some(udid) = device_udid {
caps["appium:udid"] = json!(udid);
}
caps
}
pub async fn create_ios_session(
&mut self,
device_name: Option<&str>,
platform_version: Option<&str>,
) -> Result<Value, String> {
let mut caps = json!({
"platformName": "iOS",
"automationName": "XCUITest",
"browserName": "Safari",
"noReset": true,
});
if let Some(name) = device_name {
caps["deviceName"] = json!(name);
} else {
caps["deviceName"] = json!("iPhone");
}
if let Some(ver) = platform_version {
caps["platformVersion"] = json!(ver);
}
if let Some(ref udid) = self.device_udid {
caps["udid"] = json!(udid);
}
let caps = Self::build_ios_capabilities(
self.device_udid.as_deref(),
device_name,
platform_version,
);
self.client.create_session(caps).await
}
@@ -198,4 +211,30 @@ mod tests {
assert_eq!(APPIUM_DEFAULT_PORT, 4723);
assert_eq!(APPIUM_STARTUP_TIMEOUT_SECS, 30);
}
#[test]
fn test_ios_capabilities_use_vendor_prefix() {
let caps = AppiumManager::build_ios_capabilities(
Some("TEST-UDID-123"),
Some("iPhone 16 Pro"),
Some("18.5"),
);
// W3C standard capabilities must NOT have vendor prefix
assert!(caps.get("platformName").is_some());
assert!(caps.get("browserName").is_some());
// Non-standard capabilities MUST have appium: vendor prefix
assert!(caps.get("appium:automationName").is_some());
assert!(caps.get("appium:noReset").is_some());
assert!(caps.get("appium:deviceName").is_some());
assert!(caps.get("appium:platformVersion").is_some());
assert!(caps.get("appium:udid").is_some());
// Must NOT have unprefixed non-standard capabilities
assert!(caps.get("automationName").is_none());
assert!(caps.get("noReset").is_none());
assert!(caps.get("deviceName").is_none());
assert!(caps.get("udid").is_none());
}
}