Add test cases

Author: lens0021

src/tests/validity/command_interpolation_single_apix.ab renamed to src/tests/validity/command_interpolation_single_quotes.ab

@@ -1,25 +1,25 @@
+// Single quotes should not disturb interpolation
 // Output
-// ABC
-// c
-// '
-// ''
-// 'ABC'
-// a'bABCc'd
 // '
 // a'b
+// 'ABC
+// ABC'
 // a'bABCc'd
 // "ab
+// ---
+// ABC
+// c
 
 const str = "ABC"
 const space = " "
 
-trust $ printf '{str}\\n' $
-trust $ echo 'a b c d e' | cut -d'{space}' -f3 $
-echo "'"
-echo "''"
-echo "'ABC'"
-echo "a'b{str}c'd"
 trust $ echo "'" $
 trust $ echo "a'b" $
+trust $ echo "'{str}" $
+trust $ echo "{str}'" $
 trust $ echo "a'b{str}c'd" $
 trust $ echo '"a'b $
+echo "---"
+// Reallife examples
+trust $ printf '{str}\\n' $
+trust $ echo 'a b c d e' | cut -d'{space}' -f3 $

src/tests/validity/text_interpolation_single_quotes.ab

@@ -0,0 +1,22 @@
+// Single quotes should not disturb interpolation
+// Output
+// '
+// ''
+// a'b
+// 'ABC'
+// a'bABCc'd
+// 'ABC
+// ABC'
+// '"a'b
+
+const str = "ABC"
+const space = " "
+
+echo "'"
+echo "''"
+echo "a'b"
+echo "'ABC'"
+echo "a'b{str}c'd"
+echo "'{str}"
+echo "{str}'"
+echo "'\"a'b"