Testcases for -ftrue-empty-strings and -ffalse-empty-strings

tests/truth.qc

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+void   print(...)   = #1;
+string ftos (float) = #2;
+
+void test(string s) {
+    print(ftos(!s));
+    if (s)   print(" on");
+    if (!s)  print(" off");
+    if (!!s) print(" !!on");
+    print("\n");
+}
+
+void test2(string s) {
+    print(ftos(!s));
+    while (s)   { print(" on");   break; }
+    while (!s)  { print(" off");  break; }
+    while (!!s) { print(" !!on"); break; }
+    print("\n");
+}
+
+string str_nul;
+
+void main(vector v) {
+    test("foo");
+    test2("foo");
+    test("");
+    test2("");
+    test(str_nul);
+    test2(str_nul);
+}

tests/truth.tmpl

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+I: truth.qc
+D: -ffalse-empty-strings
+T: -execute
+C: -std=fteqcc -ffalse-empty-strings
+M: 0 on !!on
+M: 0 on !!on
+M: 1 off
+M: 1 off
+M: 1 off
+M: 1 off

tests/truth2.tmpl

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+I: truth.qc
+D: regular truth
+T: -execute
+C: -std=fteqcc
+M: 0 on !!on
+M: 0 on !!on
+M: 1 on off
+M: 1 on off
+M: 1 off
+M: 1 off

tests/truth3.tmpl

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+I: truth.qc
+D: -ftrue-empty-strings
+T: -execute
+C: -std=fteqcc -ftrue-empty-strings
+M: 0 on !!on
+M: 0 on !!on
+M: 0 on !!on
+M: 0 on !!on
+M: 1 off
+M: 1 off