Fix testlab timeout limit exceeded (#12)

* validate testlab timeout limit max

* reflect testlab timeout max value

* update description with most recent timeout value

* proper handling of max timeout

- precise validation based on google docs
- fallback instead of failure if value exceeds max

* cr fix: add unit of measurement to var name

* cr fix: misleading function name

* pr fix: sync description with official docs

* pr fix: trim 's' from test timeout

* fix: accept inputs ending in s

* tests for test timeut format validation

* clean up: revert unneeded changes

* make description very clear

main.go

@@ -26,6 +26,10 @@ import (
 	"github.com/bitrise-tools/go-steputils/tools"
 )
 
+const (
+	maxTimeoutSeconds = 1800
+)
+
 // ConfigsModel ...
 type ConfigsModel struct {
 	// api
@@ -215,8 +219,16 @@ func main() {
 			testModel.EnvironmentMatrix.IosDeviceList.IosDevices = append(testModel.EnvironmentMatrix.IosDeviceList.IosDevices, &newDevice)
 		}
 
+		timeout := configs.TestTimeout
+		if val, err := strconv.ParseFloat(timeout, 64); err != nil {
+			failf("could not parse float from timeout value (%s): %s", timeout, err)
+		} else if val > float64(maxTimeoutSeconds) {
+			log.Warnf("timeout value (%f) is greater than available maximum (%f). Maximum will be used instead.", val, maxTimeoutSeconds)
+			timeout = strconv.Itoa(maxTimeoutSeconds)
+		}
+
 		testModel.TestSpecification = &testing.TestSpecification{
-			TestTimeout: fmt.Sprintf("%ss", configs.TestTimeout),
+			TestTimeout: fmt.Sprintf("%ss", timeout),
 		}
 
 		testModel.TestSpecification.IosXcTest = &testing.IosXcTest{}

step.yml

@@ -105,9 +105,9 @@ inputs:
       category: "Debug"
       title: "Test timeout"
       summary: |
-        The max time this test execution can run before it is cancelled. It does not include any time necessary to prepare and clean up the target device. The maximum possible testing time is 3600 seconds.
+        Max time a test execution is allowed to run before it is automatically canceled. The default value is 900 (15 min).  Duration in seconds with up to nine fractional digits. Example: "3.5".
       description: |
-        The max time this test execution can run before it is cancelled. It does not include any time necessary to prepare and clean up the target device. The maximum possible testing time is 3600 seconds.
+        Max time a test execution is allowed to run before it is automatically canceled. The default value is 900 (15 min).  Duration in seconds with up to nine fractional digits. Example: "3.5".
   - download_test_results: "false"
     opts:
       category: "Debug"