feat: add syntax sample for dotEnv files

tests/syntax-tests/highlighted/DotENV/.env

@@ -0,0 +1,57 @@
+# Keyword
+export TEST_KEYWORD="bar"
+export TEST_KEYWORD=12345
+export TEST_KEYWORD=TRUE
+
+# Variable
+TEST_VARIABLE="Hello"
+
+# String interpolation
+TEST_INTERPOLATION_VARIABLE="$VAR1 test test$VAR2test test"
+TEST_INTERPOLATION_SYNTAX_ONE="test test{$NVAR1}test{$NVAR2}test test"
+TEST_INTERPOLATION_SYNTAX_TWO="test test${NVAR1}test${NVAR2}test test"
+TEST_INTERPOLATION_SYNTAX_ALL="test$VAR1test test {VAR2}test test${VAR3}test"
+
+# Unquoted
+TEST_UNQUOTED=bar
+TEST_UNQUOTED_NO_VALUE=
+
+# White spaced
+TEST_WHITE_SPACE =
+TEST_WHITE_SPACE_STRING = "Hello"
+TEST_WHITE_SPACE_UNQUOTED = bar
+TEST_WHITE_SPACE_UNQUOTED_BOOL = false
+TEST_WHITE_SPACE_UNQUOTED_NUM = 20
+
+# language constants
+TEST_TRUE=true
+TEST_FALSE=false
+TEST_NULL=null
+TEST_TRUE_CAPITAL=TRUE
+TEST_FALSE_CAPITAL=FALSE
+TEST_NULL_CAPITAL=NULL
+
+# Numerical values
+TEST_NUM_DECIMAL=54
+TEST_NUM_FLOAT=5.3
+TEST_NUM=1e10
+TEST_NUM_NEGATIVE=-42
+TEST_NUM_OCTAL=057
+TEST_NUM_HEX=0x1A
+
+# Comments
+#TEST_ONE=foobar
+# TEST_TWO='foobar'
+# TEST_THREE="foobar" # a comment on a commented row
+TEST_FOUR="test test test" # this is a comment
+TEST_FIVE="comment symbol # inside string" # this is a comment
+TEST_SIX="comment symbol # and quotes \" \' inside quotes" # " this is a comment
+
+# Escape sequences
+TEST_ESCAPE="escaped characters \n \t \r \" \' \$ or maybe a backslash \\..."
+
+# Double Quotes
+TEST_DOUBLE="Lorem {$VAR1} ${VAR2} $VAR3 ipsum dolor sit amet\n\r\t\\"
+
+# Single Quotes
+TEST_SINGLE='Lorem {$VAR1} ${VAR2} $VAR3 ipsum dolor sit amet\n\r\t\\'

tests/syntax-tests/source/DotENV/.env

@@ -0,0 +1,57 @@
+# Keyword
+export TEST_KEYWORD="bar"
+export TEST_KEYWORD=12345
+export TEST_KEYWORD=TRUE
+
+# Variable
+TEST_VARIABLE="Hello"
+
+# String interpolation
+TEST_INTERPOLATION_VARIABLE="$VAR1 test test$VAR2test test"
+TEST_INTERPOLATION_SYNTAX_ONE="test test{$NVAR1}test{$NVAR2}test test"
+TEST_INTERPOLATION_SYNTAX_TWO="test test${NVAR1}test${NVAR2}test test"
+TEST_INTERPOLATION_SYNTAX_ALL="test$VAR1test test {VAR2}test test${VAR3}test"
+
+# Unquoted
+TEST_UNQUOTED=bar
+TEST_UNQUOTED_NO_VALUE=
+
+# White spaced
+TEST_WHITE_SPACE =
+TEST_WHITE_SPACE_STRING = "Hello"
+TEST_WHITE_SPACE_UNQUOTED = bar
+TEST_WHITE_SPACE_UNQUOTED_BOOL = false
+TEST_WHITE_SPACE_UNQUOTED_NUM = 20
+
+# language constants
+TEST_TRUE=true
+TEST_FALSE=false
+TEST_NULL=null
+TEST_TRUE_CAPITAL=TRUE
+TEST_FALSE_CAPITAL=FALSE
+TEST_NULL_CAPITAL=NULL
+
+# Numerical values
+TEST_NUM_DECIMAL=54
+TEST_NUM_FLOAT=5.3
+TEST_NUM=1e10
+TEST_NUM_NEGATIVE=-42
+TEST_NUM_OCTAL=057
+TEST_NUM_HEX=0x1A
+
+# Comments
+#TEST_ONE=foobar
+# TEST_TWO='foobar'
+# TEST_THREE="foobar" # a comment on a commented row
+TEST_FOUR="test test test" # this is a comment
+TEST_FIVE="comment symbol # inside string" # this is a comment
+TEST_SIX="comment symbol # and quotes \" \' inside quotes" # " this is a comment
+
+# Escape sequences
+TEST_ESCAPE="escaped characters \n \t \r \" \' \$ or maybe a backslash \\..."
+
+# Double Quotes
+TEST_DOUBLE="Lorem {$VAR1} ${VAR2} $VAR3 ipsum dolor sit amet\n\r\t\\"
+
+# Single Quotes
+TEST_SINGLE='Lorem {$VAR1} ${VAR2} $VAR3 ipsum dolor sit amet\n\r\t\\'

tests/syntax-tests/source/DotENV/LICENSE.md

@@ -0,0 +1,23 @@
+The `.env.test` file has been added from https://github.com/zaynali53/DotENV under the following license:
+
+The MIT License (MIT)
+
+Copyright (c) 2016 Zayn Ali
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.