Build cancel command (#1103)

* Added build cancel command

* Added test case for build cancel command

* Reverted local vs code launch settings

* Resolved merge conflicts

* Fixed styling issue

* Updated parameter name for build cancel method

azure-devops/azext_devops/dev/pipelines/build.py

@@ -123,6 +123,24 @@ def build_list(definition_ids=None, branch=None, organization=None, project=None
     return builds
 
 
+def build_cancel(build_id, open=False, organization=None, project=None, detect=None):
+    """Cancels if build is running.
+    :param build_id: ID of the build.
+    :type build_id: int
+    :param open: Open the build results page in your web browser.
+    :type open: bool
+    :rtype: :class:`<Build> <v5_0.build.models.Build>`
+    """
+    organization, project = resolve_instance_and_project(
+        detect=detect, organization=organization, project=project)
+    client = get_build_client(organization)
+    build = Build(status="Cancelling")
+    build = client.update_build(build=build, project=project, build_id=build_id)
+    if open:
+        _open_build(build, organization)
+    return build
+
+
 def add_build_tags(build_id, tags, organization=None, project=None, detect=None):
     """Add tag(s) for a build.
     :param build_id: ID of the build.

azure-devops/azext_devops/dev/pipelines/commands.py

@@ -116,6 +116,7 @@ def load_build_commands(self, _):
         g.command('list', 'build_list', table_transformer=transform_builds_table_output)
         g.command('queue', 'build_queue', table_transformer=transform_build_table_output)
         g.show_command('show', 'build_show', table_transformer=transform_build_table_output)
+        g.command('cancel', 'build_cancel', table_transformer=transform_build_table_output)
 
     with self.command_group('pipelines build tag', command_type=buildOps) as g:
         # basic build tag commands

tests/test_pipelinesBuildCancelTest.py

@@ -0,0 +1,31 @@
+# --------------------------------------------------------------------------------------------
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See License.txt in the project root for license information.
+# --------------------------------------------------------------------------------------------
+
+import os
+import unittest
+
+from azure_devtools.scenario_tests import AllowLargeResponse
+from .utilities.helper import DevopsScenarioTest, disable_telemetry, set_authentication, get_test_org_from_env_variable
+
+DEVOPS_CLI_TEST_ORGANIZATION = get_test_org_from_env_variable() or 'Https://dev.azure.com/dhilmathy'
+
+class PipelinesBuildCancelTests(DevopsScenarioTest):
+    @AllowLargeResponse(size_kb=3072)
+    @disable_telemetry
+    @set_authentication
+    def test_build_cancel(self):
+        self.cmd('az devops configure --defaults organization=' + DEVOPS_CLI_TEST_ORGANIZATION + ' project=buildtests')
+
+        build_definition_name = 'BuildTests Definition1'
+
+        #QueueBuild to get a build ID
+        queue_build_command = 'az pipelines build queue --definition-name "' + build_definition_name + '" --detect false --output json'
+        queue_build_output = self.cmd(queue_build_command).get_output_in_json()
+        queued_build_id = queue_build_output["id"]
+
+        #Cancel the running build
+        cancel_running_build_command = 'az pipelines build cancel --id ' + str(queued_build_id) + ' --detect false --output json'
+        cancel_running_build_output = self.cmd(cancel_running_build_command).get_output_in_json()
+        assert cancel_running_build_output["status"] == "cancelling"