add test cases for @media+calc(), space toggles and relative colors (#70

)

closes #69 
closes #68 
closes #67

index.js

@@ -353,6 +353,11 @@ function print_declaration(node, css, indent_level) {
 		value = value.replace(/\s*\/\s*/, '/')
 	}
 
+	// Hacky: add a space in case of a `space toggle` during minification
+	if (value === EMPTY_STRING && OPTIONAL_SPACE === EMPTY_STRING) {
+		value += SPACE
+	}
+
 	return indent(indent_level) + property + COLON + OPTIONAL_SPACE + value
 }
 

test/atrules.test.js

@@ -82,6 +82,14 @@ test('@media prelude formatting', () => {
 	}
 })
 
+test.skip('calc() inside @media', () => {
+	let actual = format(`
+		@media (min-width: calc(300px* 3)) {}
+	`)
+	let expected = `@media (min-width: calc(300px * 3)) {}`
+	assert.equal(actual, expected)
+})
+
 test('@supports prelude formatting', () => {
 	let fixtures = [
 		[`@supports (display:grid){}`, `@supports (display: grid) {}`],

test/values.test.js

@@ -181,6 +181,22 @@ test('lowercases CSS functions', () => {
 	assert.is(actual, expected)
 })
 
+test('relative colors', () => {
+	let actual = format(`a {
+		color: rgb(  from  red 0  0  255);
+		color: rgb(  from  rgb( 200  0  0 )  r  r  r  ) ;
+		color: hwb( from   var( --base-color  )  h  w  b  /  var( --standard-opacity ) ) ;
+		color: lch(from var(--base-color) calc(l + 20) c h);
+	}`)
+	let expected = `a {
+	color: rgb(from red 0 0 255);
+	color: rgb(from rgb(200 0 0) r r r);
+	color: hwb(from var(--base-color) h w b / var(--standard-opacity));
+	color: lch(from var(--base-color) calc(l + 20) c h);
+}`
+	assert.is(actual, expected)
+})
+
 test('does not change casing of `NaN`', () => {
 	let actual = format(`a {
 		height: calc(1 * NaN);
@@ -223,4 +239,25 @@ test('formats unknown content in value', () => {
 	assert.is(actual, expected)
 })
 
+test('does not break space toggles', () => {
+	let actual = format(`a {
+		--ON: initial;
+		--OFF: ;
+	}`)
+	let expected = `a {
+	--ON: initial;
+	--OFF: ;
+}`
+	assert.is(actual, expected)
+})
+
+test('does not break space toggles (minified)', () => {
+	let actual = format(`a {
+		--ON: initial;
+		--OFF: ;
+	}`, { minify: true })
+	let expected = `a{--ON:initial;--OFF: }`
+	assert.is(actual, expected)
+})
+
 test.run();