support boolean facets

[abeglova]

What are the relevant tickets?

• Add certificate as a filter for Channel Search mit-learn#745

Description (What does it do?)

This updates course-search-utils to support boolean facets

How can this be tested?

Test with mitodl/mit-learn#802

[ChristopherChudzicki]

Two requested changes:

• the extra tests
• the type change for setParamValue

[ChristopherChudzicki]

IMO it would be worth adding a few more tests, particularly array values:

  test.each([
    {
      initial:  "?resource_type=course&resource_type=program&department=6",
      value:    "program",
      expected: new URLSearchParams("?department=6&resource_type=program")
    },
    {
      initial:  "?department=6",
      value:    "program",
      expected: new URLSearchParams("?department=6&resource_type=program")
    },
    {
      initial:  "?department=6",
      value:    ["program", "video"],
      expected: new URLSearchParams(
        "?department=6&resource_type=program&resource_type=video"
      )
    },
    {
      initial:  "?department=6&resource_type=program",
      value:    [],
      expected: new URLSearchParams("?department=6")
    }
  ])("setSearchParams sets string params", ({ initial, expected, value }) => {
    const { result, searchParams } = setup({ initial })
    act(() => {
      result.current.setParamValue("resource_type", value)
    })
    expect(searchParams.current).toEqual(expected)
  })

[ChristopherChudzicki]

This should be

Suggested change

	setParamValue: (name: string, rawValue: string) => void
	setParamValue: (name: string, rawValue: string | string[]) => void

right? That allows setting department=6&department=8, and also is consistent with the type below.