#!/bin/sh
# Copyright 2018 by Denys Vlasenko
# Licensed under GPLv2 or later, see file LICENSE in this source tree.

. ./testing.sh

# testing "test name" "command" "expected result" "file input" "stdin"

testing "bc comment" \
	"bc" \
	"3\n" \
	"" "1 /* comment */ + 2"

testing "bc /*/ is not a closed comment" \
	"bc" \
	"4\n" \
	"" "1 /*/ + 2 */ + 3"

# this needs interactive testing
testing "bc comment with \"" \
	"bc" \
	"3\n" \
	"" "1 /* \" */ + 2"

# this needs interactive testing
testing "bc \"string/*\" is not a comment" \
	"bc" \
	"string/*9\n" \
	"" "\"string/*\";9"

testing "bc comment 3: unterminated #comment" \
	"bc" \
	"" \
	"" "#foo"  # no trailing newline

testing "bc backslash 1" \
	"bc" \
	"3\n" \
	"" "1 \\\\\n + 2"

testing "bc string 1" \
	"bc" \
	"STR\n" \
	"" "\"STR\n\""

testing "bc read() 4<EOF>" \
	"bc input" \
	"4\n" \
	"read();halt" "4"

testing "bc read()^2" \
	"bc input" \
	"16\n" \
	"read()^2;halt" "4\n"

testing "bc read()*read()" \
	"bc input" \
	"20\n" \
	"read()*read();halt" "4\n5"

testing "bc if 0 else" \
	"bc" \
	"2\n9\n" \
	"" "if (0) 1 else 2; 9"

testing "bc if 1 else" \
	"bc" \
	"1\n9\n" \
	"" "if (1) 1 else 2; 9"

testing "bc if 1 if 1 else else" \
	"bc" \
	"1\n9\n" \
	"" "if (1) if (1) 1 else 2 else 3; 9"

testing "bc if 0 else if 1" \
	"bc" \
	"2\n9\n" \
	"" "if (0) 1 else if (1) 2; 9"

testing "bc for (;;)" \
	"bc" \
	"2\n3\n2\n9\n" \
	"" "i=2; for (;;) { 2; if(--i==0) break; 3; }; 9"

testing "bc for (;cond;)" \
	"bc" \
	"1\n2\n3\n9\n" \
	"" "i=0; for(;i<3;)++i; 9"

testing "bc for (;cond;upd)" \
	"bc" \
	"1\n2\n3\n9\n" \
	"" "i=1; for(;i<4;i++)i; 9"

testing "bc for (init;cond;upd)" \
	"bc" \
	"1\n2\n3\n9\n" \
	"" "for(i=1;i<4;i++)i; 9"

testing "bc for (;;) {break}" \
	"bc" \
	"2\n9\n" \
	"" "for (;;) {2;break}; 9"

testing "bc define {return}" \
	"bc" \
	"0\n9\n" \
	"" "define w() {return}\nw();9"

testing "bc define auto" \
	"bc" \
	"8\n9\n" \
	"" "define w() { auto z; return 8; }; w(); 9"

testing "bc define auto array same name" \
	"bc" \
	"8\n9\n" \
	"" "define w(x) { auto x[]; return x; }; w(8); 9"

testing "bc define with body on next line" \
	"bc" \
	"8\n9\n" \
	"" "define w()\n{ auto z; return 8; }\nw()\n9"

testing "bc void function" \
	"bc" \
	"void9\n" \
	"" "define void w() {print \"void\"}\nw()\n9"

# Extra POSIX compat - GNU bc does not allow this
testing "bc function named 'void'" \
	"bc" \
	"void0\n9\n" \
	"" "define void() {print \"void\"}\nvoid()\n9"

# Extra POSIX compat - GNU bc does not allow this
testing "bc variable named 'void'" \
	"bc" \
	"6\n9\n" \
	"" "void=6\nvoid\n9"

testing "bc if(cond)<NL>" \
	"bc" \
	"9\n" \
	"" "if(0)\n3\n9"

testing "bc if(cond) stmt else<NL>" \
	"bc" \
	"4\n9\n" \
	"" "if(0)3 else\n4\n9"

testing "bc while(cond)<NL>" \
	"bc" \
	"8\n7\n6\n5\n4\n3\n2\n1\n9\n" \
	"" "i=9;while(--i)\ni\n9"

testing "bc ifz does not match if keyword" \
	"bc" \
	"1\n2\n2\n3\n" \
	"" "ifz=1;ifz\n++ifz;ifz++\nifz"

# had parse error on "f()-N"
testing "bc -l 'e(0)-2'" \
	"bc -l" \
	"-1.00000000000000000000\n" \
	"" "e(0)-2"

testing "bc (!a&&b)" \
	"bc" \
	"0\n" \
	"" "(!a&&b)"

# check that dc code is not messing this up (no NUL printing!)
testing "bc print \"\"" \
	"bc" \
	"" \
	"" "print \"\""

testing "bc print 1,2,3" \
	"bc" \
	"123" \
	"" "print 1,2,3"

testing "bc length" \
	"bc" \
	"1\n3\n1\n3\n3\n" \
	"" "length(0); length(100); length(0.01); length(0.00120); length(0.012-0.012);"

testing "bc { print 1 }" \
	"bc" \
	"1" \
	"" "{ print 1 }"

testing "bc comparison 1" \
	"bc" \
	"1\n" \
	"" "-10 < -9"

testing "bc nested loops and breaks" \
	"bc" \
	"\
11
21
31
22
12
99
" \
	"" "\
if(1) {
	11
	while(1) {
		21
		while(1) {
			31
			break
			32
		}
		22
		break
		23
	}
	12
} else {
	88
}
99
"

testing "bc continue in if" \
	"bc" \
	"\
11
21
11
31
99
" \
	"" "\
i=2
while(i--) {
	11
	if(i) {
		21
		continue
		22
	} else {
		31
		continue
	32
	}
	12
}
99
"

testing "bc continue in for" \
	"bc" \
	"\
1
77
2
99
" \
	"" "\
for(i=1; i<3; i++) {
    i
    if(i==2) continue
    77
}
99
"

testing "bc ibase" \
	"bc" \
	"99\n1295\n1224\n" \
	"" "a=ZZ;a;ibase=36;a=ZZ;a;ibase=Z;a=ZZ;a"

testing "bc parsing of numbers" \
	"bc 2>&1 | bc 2>&1 | md5sum 2>&1" \
	"465d8c01308d0863b6f5669e8a1c69fb  -\n" \
	"" '
for (b = 2; b <= 16; ++b) {
	if (b == 10) continue
	obase = 10
	print "ibase = A; ibase = ", b, "\n"
	obase = b
	for (i = 0; i <= 65536; ++i) {
		i
		print "0.", i, "\n"
		print "1.", i, "\n"
		print i, ".", i, "\n"
	}
}'

testing "bc printing of numbers" \
	"bc 2>&1 | bc 2>&1 | md5sum 2>&1" \
	"d884b35d251ca096410712743aeafb9e  -\n" \
	"" '
for (b = 2; b <= 101; ++b) {
	if (b == 10) continue
	s = b * b
	print "obase = ", b, "\n"
	for (i = 0; i <= s; ++i) {
		i
		print "0.", i, "\n"
		print "1.", i, "\n"
		print i, ".", i, "\n"
	}
	2189432174861923048671023498128347619023487610234689172304.192748960128745108927461089237469018723460
}'

for f in bc*.bc; do
	r="`basename "$f" .bc`_results.txt"
	test -f "$r" || continue
	# testing "test name" "command" "expected result" "file input" "stdin"
	testing "bc -lq $f" \
		"{ { bc -lq $f 2>&1; echo E:\$? >&2; } | diff -u - $r; echo E:\$?; } 2>&1" \
		"E:0\nE:0\n" \
		"" ""
done

exit $FAILCOUNT