Add karma, and ng test runners

Author: gayanW

launchable/test_runners/karma.py

@@ -0,0 +1,153 @@
+# This runner only supports recording tests
+# For subsetting, use 'ng' test runner instead
+# It's possible to use 'karma' runner for recording, and 'ng' runner for subsetting, for the same test session
+import json
+from typing import Dict, Generator, List
+
+import click
+
+from ..commands.record.case_event import CaseEvent
+from ..testpath import TestPath
+from . import launchable
+
+
+@click.argument('reports', required=True, nargs=-1)
+@launchable.record.tests
+def record_tests(client, reports):
+    client.parse_func = JSONReportParser(client).parse_func
+
+    for r in reports:
+        client.report(r)
+
+    client.run()
+
+
+class JSONReportParser:
+    """
+    Sample Karma report format:
+    {
+      "browsers": {...},
+      "result": {
+        "24461741": [
+          {
+            "fullName": "path/to/spec.ts should do something",
+            "description": "should do something",
+            "id": "spec0",
+            "log": [],
+            "skipped": false,
+            "disabled": false,
+            "pending": false,
+            "success": true,
+            "suite": [
+              "path/to/spec.ts"
+            ],
+            "time": 92,
+            "executedExpectationsCount": 1,
+            "passedExpectations": [...],
+            "properties": null
+          }
+        ]
+      },
+      "summary": {...}
+    }
+    """
+
+    def __init__(self, client):
+        self.client = client
+
+    def parse_func(self, report_file: str) -> Generator[Dict, None, None]:  # type: ignore
+        data: Dict
+        with open(report_file, 'r') as json_file:
+            try:
+                data = json.load(json_file)
+            except Exception:
+                click.echo(
+                    click.style("Error: Failed to load Json report file: {}".format(report_file), fg='red'), err=True)
+                return
+
+        if not self._validate_report_format(data):
+            click.echo(
+                "Error: {} does not appear to be valid Karma report format. "
+                "Make sure you are using karma-json-reporter or a compatible reporter.".format(
+                    report_file), err=True)
+            return
+
+        results = data.get("result", {})
+        for browser_id, specs in results.items():
+            if isinstance(specs, list):
+                for event in self._parse_specs(specs):
+                    yield event
+
+    def _validate_report_format(self, data: Dict) -> bool:
+        if not isinstance(data, dict):
+            return False
+
+        if "result" not in data:
+            return False
+
+        results = data.get("result", {})
+        if not isinstance(results, dict):
+            return False
+
+        for browser_id, specs in results.items():
+            if not isinstance(specs, list):
+                return False
+
+            for spec in specs:
+                if not isinstance(spec, dict):
+                    return False
+                # Check for required fields
+                if "suite" not in spec or "time" not in spec:
+                    return False
+                # Field suite should have at least one element (filename)
+                suite = spec.get("suite", [])
+                if not isinstance(suite, list) or len(suite) == 0:
+                    return False
+
+        return True
+
+    def _parse_specs(self, specs: List[Dict]) -> List[Dict]:
+        events: List[Dict] = []
+
+        for spec in specs:
+            # TODO:
+            # In NextWorld, test filepaths are included in the suite tag
+            # But generally in a Karma test report, a suite tag can be any string
+            # For the time being let's get filepaths from the suite tag,
+            # until we find a standard way to include filepaths in the test reports
+            suite = spec.get("suite", [])
+            filename = suite[0] if suite else ""
+
+            test_path: TestPath = [
+                self.client.make_file_path_component(filename),
+                {"type": "testcase", "name": spec.get("fullName", spec.get("description", ""))}
+            ]
+
+            duration_msec = spec.get("time", 0)
+            status = self._case_event_status_from_spec(spec)
+            stderr = self._parse_stderr(spec)
+
+            events.append(CaseEvent.create(
+                test_path=test_path,
+                duration_secs=duration_msec / 1000 if duration_msec else 0,
+                status=status,
+                stderr=stderr
+            ))
+
+        return events
+
+    def _case_event_status_from_spec(self, spec: Dict) -> int:
+        if spec.get("skipped", False) or spec.get("disabled", False) or spec.get("pending", False):
+            return CaseEvent.TEST_SKIPPED
+
+        if spec.get("success", False):
+            return CaseEvent.TEST_PASSED
+        else:
+            return CaseEvent.TEST_FAILED
+
+    def _parse_stderr(self, spec: Dict) -> str:
+        log_messages = spec.get("log", [])
+        if not log_messages:
+            return ""
+
+        return "\n".join(str(msg) for msg in log_messages if msg)

launchable/test_runners/ng.py

@@ -0,0 +1,22 @@
+from . import launchable
+
+
+@launchable.subset
+def subset(client):
+    """
+    Input format example:
+        src/app/feature/feature.component.spec.ts
+        src/app/service/service.service.spec.ts
+
+    Output format: --include=<path> format that can be passed to ng test
+    Example:
+        --include=src/app/feature/feature.component.spec.ts --include=src/app/service/service.service.spec.ts
+    """
+    for t in client.stdin():
+        path = t.strip()
+        if path:
+            client.test_path(path)
+
+    client.formatter = lambda x: "--include={}".format(x[0]['name'])
+    client.separator = " "
+    client.run()