Expected `normalize_city("Paris", country = "DE")` to equal "Non-German City - Do not match".
Differences:
1/1 mismatches
x[1]: "paris"
y[1]: "Non-German City - Do not match"

expect_equal(normalize_city("Frankfurt am Main", country="DE"), "frankfurt am main")
expect_equal(normalize_city("Frankfurt/Main", country="DE"), "frankfurt am main")
expect_equal(normalize_city("Paris", country="DE"), "Non-German City - Do not match")
expect_equal(normalize_city("St. Gallen", country="CH"), "sankt gallen")
expect_equal(normalize_city("Berlin", country="CH"), "Non-Swiss City - Do not match")

Expected `normalize_city("Zürich", country = "CH")` to equal "zuerich".
Differences:
1/1 mismatches
x[1]: "zurich"
y[1]: "zuerich"

Expected `normalize_city("Berlin", country = "CH")` to equal "Non-Swiss City - Do not match".
Differences:
1/1 mismatches
x[1]: "berlin"
y[1]: "Non-Swiss City - Do not match"

Expected `res_ch$city_clean[1]` to equal "zuerich".
Differences:
1/1 mismatches
x[1]: "zurich"
y[1]: "zuerich"