coder · greyscaled · Mar 19, 2022
diff --git a/site/src/components/AuditLog/TargetCell.stories.tsx b/site/src/components/AuditLog/TargetCell.stories.tsx
@@ -0,0 +1,21 @@
+import { ComponentMeta, Story } from "@storybook/react"
+import React from "react"
+import { TargetCell, TargetCellProps } from "./TargetCell"
+
+export default {
+  title: "AuditLog/Cells/TargetCell",
+  component: TargetCell,
+  argTypes: {
+    onSelect: {
+      action: "onSelect",
+    },
+  },
+} as ComponentMeta<typeof TargetCell>
+
+const Template: Story<TargetCellProps> = (args) => <TargetCell {...args} />
+
+export const Example = Template.bind({})
+Example.args = {
+  name: "Coder frontend",
+  type: "project",
+}
diff --git a/site/src/components/AuditLog/TargetCell.test.tsx b/site/src/components/AuditLog/TargetCell.test.tsx
@@ -0,0 +1,131 @@
+import React from "react"
+import { WrapperComponent } from "../../test_helpers"
+import { TargetCell, TargetCellProps, LANGUAGE } from "./TargetCell"
+import { fireEvent, render, screen } from "@testing-library/react"
+
+namespace Helpers {
+  export const Props: TargetCellProps = {
+    name: "name",
+    type: "test",
+    onSelect: jest.fn(),
+  }
+
+  export const Component: React.FC<TargetCellProps> = (props) => (
+    <WrapperComponent>
+      <TargetCell {...props} />
+    </WrapperComponent>
+  )
+}
+
+describe("TargetCellProps", () => {
+  // eslint-disable-next-line @typescript-eslint/no-empty-function
+  const noop = () => {}
+
+  it.each<[TargetCellProps, TargetCellProps, boolean]>([
+    [
+      {
+        name: "test",
+        type: "test",
+        onSelect: noop,
+      },
+      {
+        name: "test",
+        type: "test",
+        onSelect: noop,
+      },
+      false,
+    ],
+    [
+      {
+        name: "",
+        type: " test ",
+        onSelect: noop,
+      },
+      {
+        name: "",
+        type: "test",
+        onSelect: noop,
+      },
+      false,
+    ],
+    [
+      {
+        name: "test",
+        type: "",
+        onSelect: noop,
+      },
+      {
+        name: "test",
+        type: "",
+        onSelect: noop,
+      },
+      true,
+    ],
+  ])(`validate(%p) -> %p throws: %p`, (props, expected, throws) => {
+    const validate = () => {
+      return TargetCellProps.validate(props)
+    }
+
+    if (throws) {
+      expect(validate).toThrowError()
+    } else {
+      expect(validate()).toStrictEqual(expected)
+    }
+  })
+})
+
+describe("TargetCell", () => {
+  // onSelect callback
+  it("calls onSelect when the name is clicked", () => {
+    // Given
+    const onSelectMock = jest.fn()
+    const props: TargetCellProps = {
+      ...Helpers.Props,
+      onSelect: onSelectMock,
+    }
+
+    // When
+    render(<Helpers.Component {...props} />)
+    fireEvent.click(screen.getByText(props.name))
+
+    // Then
+    expect(onSelectMock).toHaveBeenCalledTimes(1)
+  })
+
+  // target name cases
+  it("renders a non-empty name", () => {
+    // Given
+    const props = Helpers.Props
+
+    // When
+    render(<Helpers.Component {...props} />)
+
+    // Then
+    expect(screen.getByText(props.name)).toBeDefined()
+  })
+  it(`renders ${LANGUAGE.emptyDisplayName} when name is '""'`, () => {
+    // Given
+    const props: TargetCellProps = {
+      ...Helpers.Props,
+      name: "",
+    }
+
+    // When
+    render(<Helpers.Component {...props} />)
+
+    // Then
+    expect(screen.getByText(LANGUAGE.emptyDisplayName)).toBeDefined()
+  })
+
+  // target type
+  it("renders target type", () => {
+    // Given
+    const props = Helpers.Props
+
+    // When
+    render(<Helpers.Component {...props} />)
+
+    // Then
+    expect(screen.getByText(props.type)).toBeDefined()
+  })
+})
diff --git a/site/src/components/AuditLog/TargetCell.tsx b/site/src/components/AuditLog/TargetCell.tsx
@@ -0,0 +1,55 @@
+import Box from "@material-ui/core/Box"
+import Link from "@material-ui/core/Link"
+import Typography from "@material-ui/core/Typography"
+import React from "react"
+
+export const LANGUAGE = {
+  emptyDisplayName: "*",
+}
+
+const TargetCellName = (displayName: string, onSelect: () => void): JSX.Element => {
+  return displayName ? (
+    <Link onClick={onSelect}>{displayName}</Link>
+  ) : (
+    <Typography variant="caption">{LANGUAGE.emptyDisplayName}</Typography>
+  )
+}
+
+export interface TargetCellProps {
+  name: string
+  type: string
+  onSelect: () => void
+}
+export namespace TargetCellProps {
+  /**
+   * @throws Error if invalid
+   */
+  export const validate = (props: TargetCellProps): TargetCellProps => {
+    const sanitizedName = props.name.trim()
+    const sanitizedType = props.type.trim()
+
+    if (!sanitizedType) {
+      throw new Error(`invalid type: '${props.type}'`)
+    }
+
+    return {
+      name: sanitizedName,
+      type: sanitizedType,
+      onSelect: props.onSelect,
+    }
+  }
+}
+
+export const TargetCell: React.FC<TargetCellProps> = (props) => {
+  const { name, type, onSelect } = TargetCellProps.validate(props)
+
+  return (
+    <Box display="flex" flexDirection="column">
+      {TargetCellName(name, onSelect)}
+
+      <Typography color="textSecondary" variant="caption">
+        {type}
+      </Typography>
+    </Box>
+  )
+}