[SIEM] Additional Endgame Row Renderer Code Coverage (#48722) (#48931)

## [SIEM] Additional Endgame Row Renderer Code Coverage

Adds additional unit test coverage for the [Endgame row renderers](#48277)

### Endgame Event Types / Subtypes

Additional unit tests were added for the following Endgame event types / subtypes:

* DNS (`dns_event`)
  - [X] `request_event`
* File (FIM) (`file_event`)
  - [X] `file_create_event`
  - [X] `file_delete_event`
* Network (`network_event`)
  - [X] `ipv4_connection_accept_event`
  - [X] `ipv6_connection_accept_event`
  - [X] `ipv4_disconnect_received_event`
  - [X] `ipv6_disconnect_received_event`
* Security (Authentication) (`security_event`)
  - [X] `user_logon`
  - [X] `admin_logon`
  - [X] `explicit_user_logon`
  - [X] `user_logoff`
* Process (`process_event`)
  - [X] `creation_event`
  - [X] `termination_event`

### Non-Endgame Events

Additional unit tests for some non-Endgame events were also added, including:

* FIM file `created` events
* FIM file `deleted` events
* Socket `socket_opened` events
* Socket `socket_closed` events

elastic/ecs-dev#178

x-pack/legacy/plugins/siem/public/components/timeline/body/renderers/exit_code_draggable.test.tsx

@@ -0,0 +1,87 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import * as React from 'react';
+import { mountWithIntl } from 'test_utils/enzyme_helpers';
+
+import { TestProviders } from '../../../../mock';
+
+import { ExitCodeDraggable } from './exit_code_draggable';
+
+describe('ExitCodeDraggable', () => {
+  test('it renders the expected text and exit code, when both text and an endgameExitCode are provided', () => {
+    const wrapper = mountWithIntl(
+      <TestProviders>
+        <ExitCodeDraggable contextId="test" endgameExitCode="0" eventId="1" text="with exit code" />
+      </TestProviders>
+    );
+    expect(wrapper.text()).toEqual('with exit code0');
+  });
+
+  test('it returns an empty string when text is provided, but endgameExitCode is undefined', () => {
+    const wrapper = mountWithIntl(
+      <TestProviders>
+        <ExitCodeDraggable
+          contextId="test"
+          endgameExitCode={undefined}
+          eventId="1"
+          text="with exit code"
+        />
+      </TestProviders>
+    );
+    expect(wrapper.text()).toEqual('');
+  });
+
+  test('it returns an empty string when text is provided, but endgameExitCode is null', () => {
+    const wrapper = mountWithIntl(
+      <TestProviders>
+        <ExitCodeDraggable
+          contextId="test"
+          endgameExitCode={null}
+          eventId="1"
+          text="with exit code"
+        />
+      </TestProviders>
+    );
+    expect(wrapper.text()).toEqual('');
+  });
+
+  test('it returns an empty string when text is provided, but endgameExitCode is an empty string', () => {
+    const wrapper = mountWithIntl(
+      <TestProviders>
+        <ExitCodeDraggable contextId="test" endgameExitCode="" eventId="1" text="with exit code" />
+      </TestProviders>
+    );
+    expect(wrapper.text()).toEqual('');
+  });
+
+  test('it renders just the exit code when text is undefined', () => {
+    const wrapper = mountWithIntl(
+      <TestProviders>
+        <ExitCodeDraggable contextId="test" endgameExitCode="1" eventId="1" text={undefined} />
+      </TestProviders>
+    );
+    expect(wrapper.text()).toEqual('1');
+  });
+
+  test('it renders just the exit code when text is null', () => {
+    const wrapper = mountWithIntl(
+      <TestProviders>
+        <ExitCodeDraggable contextId="test" endgameExitCode="1" eventId="1" text={null} />
+      </TestProviders>
+    );
+    expect(wrapper.text()).toEqual('1');
+  });
+
+  test('it renders just the exit code when text is an empty string', () => {
+    const wrapper = mountWithIntl(
+      <TestProviders>
+        <ExitCodeDraggable contextId="test" endgameExitCode="1" eventId="1" text="" />
+      </TestProviders>
+    );
+    expect(wrapper.text()).toEqual('1');
+  });
+});

x-pack/legacy/plugins/siem/public/components/timeline/body/renderers/file_draggable.test.tsx

@@ -0,0 +1,110 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import * as React from 'react';
+import { mountWithIntl } from 'test_utils/enzyme_helpers';
+
+import { TestProviders } from '../../../../mock';
+
+import { FileDraggable } from './file_draggable';
+
+describe('FileDraggable', () => {
+  test('it prefers fileName and filePath over endgameFileName and endgameFilePath when all of them are provided', () => {
+    const wrapper = mountWithIntl(
+      <TestProviders>
+        <FileDraggable
+          contextId="test"
+          endgameFileName="[endgameFileName]"
+          endgameFilePath="[endgameFilePath]"
+          eventId="1"
+          fileName="[fileName]"
+          filePath="[filePath]"
+        ></FileDraggable>
+      </TestProviders>
+    );
+    expect(wrapper.text()).toEqual('[fileName]in[filePath]');
+  });
+
+  test('it returns an empty string when none of the files or paths are provided', () => {
+    const wrapper = mountWithIntl(
+      <TestProviders>
+        <FileDraggable
+          contextId="test"
+          endgameFileName={undefined}
+          endgameFilePath={undefined}
+          eventId="1"
+          fileName={undefined}
+          filePath={undefined}
+        ></FileDraggable>
+      </TestProviders>
+    );
+    expect(wrapper.text()).toEqual('');
+  });
+
+  test('it renders just the endgameFileName if only endgameFileName is provided', () => {
+    const wrapper = mountWithIntl(
+      <TestProviders>
+        <FileDraggable
+          contextId="test"
+          endgameFileName="[endgameFileName]"
+          endgameFilePath={undefined}
+          eventId="1"
+          fileName={undefined}
+          filePath={undefined}
+        />
+      </TestProviders>
+    );
+    expect(wrapper.text()).toEqual('[endgameFileName]');
+  });
+
+  test('it renders "in endgameFilePath" if only endgameFilePath is provided', () => {
+    const wrapper = mountWithIntl(
+      <TestProviders>
+        <FileDraggable
+          contextId="test"
+          endgameFileName={undefined}
+          endgameFilePath="[endgameFilePath]"
+          eventId="1"
+          fileName={undefined}
+          filePath={undefined}
+        />
+      </TestProviders>
+    );
+    expect(wrapper.text()).toEqual('in[endgameFilePath]');
+  });
+
+  test('it renders just the filename if only fileName is provided', () => {
+    const wrapper = mountWithIntl(
+      <TestProviders>
+        <FileDraggable
+          contextId="test"
+          endgameFileName={undefined}
+          endgameFilePath={undefined}
+          eventId="1"
+          fileName="[fileName]"
+          filePath={undefined}
+        />
+      </TestProviders>
+    );
+    expect(wrapper.text()).toEqual('[fileName]');
+  });
+
+  test('it renders "in filePath" if only filePath is provided', () => {
+    const wrapper = mountWithIntl(
+      <TestProviders>
+        <FileDraggable
+          contextId="test"
+          endgameFileName={undefined}
+          endgameFilePath={undefined}
+          eventId="1"
+          fileName={undefined}
+          filePath="[filePath]"
+        />
+      </TestProviders>
+    );
+    expect(wrapper.text()).toEqual('in[filePath]');
+  });
+});

x-pack/legacy/plugins/siem/public/components/timeline/body/renderers/file_draggable.tsx

@@ -31,8 +31,8 @@ export const FileDraggable = React.memo<Props>(
       return null;
     }
 
-    const fileNameIsKnown =
-      !isNillEmptyOrNotFinite(fileName) || !isNillEmptyOrNotFinite(endgameFileName);
+    const filePathIsKnown =
+      !isNillEmptyOrNotFinite(filePath) || !isNillEmptyOrNotFinite(endgameFilePath);
 
     return (
       <>
@@ -58,7 +58,7 @@ export const FileDraggable = React.memo<Props>(
           </TokensFlexItem>
         ) : null}
 
-        {fileNameIsKnown && (
+        {filePathIsKnown && (
           <TokensFlexItem data-test-subj="in" grow={false} component="span">
             {i18n.IN}
           </TokensFlexItem>