string-tests: Tests for strings
In RDocTaskForce/testextra: Extract Test Blocks

Description Usage Arguments Functions Examples

Tests for strings

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is_nonempty_string(x)

is_optional_string(x)

`x`	a character vector/string.

is_nonempty_string: Test that a character is both a string (character vector of length one) and that it is non-empty, has at least one character and is not missing.
is_optional_string: Check for an optional string: must be a character, not missing, a vector of either length 0 or 1, and if provided must not be empty ("").

# TRUE
is_nonempty_string("hello")

# All FALSE
x <- c("hello", "world")
is_nonempty_string(x)
is_nonempty_string(NA_character_)
is_nonempty_string(character(0))
is_nonempty_string(NULL)
is_nonempty_string(12345)