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|
# JavaScript Literals
# -------------------
test "inline JavaScript is evaluated", ->
eq '\\`', `
// Inline JS
"\\\\\`"
`
test "escaped backticks are output correctly", ->
`var a = \`2 + 2 = ${4}\``
eq a, '2 + 2 = 4'
test "backslashes before a newline don’t break JavaScript blocks", ->
`var a = \`To be, or not\\
to be.\``
eq a, '''
To be, or not\\
to be.'''
test "block inline JavaScript is evaluated", ->
```
var a = 1;
var b = 2;
```
c = 3
```var d = 4;```
eq a + b + c + d, 10
test "block inline JavaScript containing backticks", ->
```
// This is a comment with `backticks`
var a = 42;
var b = `foo ${'bar'}`;
var c = 3;
var d = 'foo`bar`';
```
eq a + c, 45
eq b, 'foo bar'
eq d, 'foo`bar`'
test "block JavaScript can end with an escaped backtick character", ->
```var a = \`hello\````
```
var b = \`world${'!'}\````
eq a, 'hello'
eq b, 'world!'
test "JavaScript block only escapes backslashes followed by backticks", ->
eq `'\\\n'`, '\\\n'
test "escaped JavaScript blocks speed round", ->
# The following has escaped backslashes because they’re required in strings, but the intent is this:
# `hello` → hello;
# `\`hello\`` → `hello`;
# `\`Escaping backticks in JS: \\\`hello\\\`\`` → `Escaping backticks in JS: \`hello\``;
# `Single backslash: \ ` → Single backslash: \ ;
# `Double backslash: \\ ` → Double backslash: \\ ;
# `Single backslash at EOS: \\` → Single backslash at EOS: \;
# `Double backslash at EOS: \\\\` → Double backslash at EOS: \\;
for [input, output] in [
['`hello`', 'hello;']
['`\\`hello\\``', '`hello`;']
['`\\`Escaping backticks in JS: \\\\\\`hello\\\\\\`\\``', '`Escaping backticks in JS: \\`hello\\``;']
['`Single backslash: \\ `', 'Single backslash: \\ ;']
['`Double backslash: \\\\ `', 'Double backslash: \\\\ ;']
['`Single backslash at EOS: \\\\`', 'Single backslash at EOS: \\;']
['`Double backslash at EOS: \\\\\\\\`', 'Double backslash at EOS: \\\\;']
]
eqJS input, output
|
