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-rw-r--r--src/pkg/exp/eval/expr_test.go345
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diff --git a/src/pkg/exp/eval/expr_test.go b/src/pkg/exp/eval/expr_test.go
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+++ b/src/pkg/exp/eval/expr_test.go
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+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package eval
+
+import (
+ "bignum";
+ "testing";
+)
+
+var undefined = "undefined"
+var typeAsExpr = "type .* used as expression"
+var badCharLit = "character literal"
+var illegalEscape = "illegal char escape"
+var opTypes = "illegal (operand|argument) type|cannot index into"
+var badAddrOf = "cannot take the address"
+var constantTruncated = "constant [^ ]* truncated"
+var constantUnderflows = "constant [^ ]* underflows"
+var constantOverflows = "constant [^ ]* overflows"
+var implLimit = "implementation limit"
+var mustBeUnsigned = "must be unsigned"
+var divByZero = "divide by zero"
+
+var hugeInteger = bignum.Int(1).Shl(64);
+
+var exprTests = []test {
+ Val("i", 1),
+ CErr("zzz", undefined),
+ // TODO(austin) Test variable in constant context
+ //CErr("t", typeAsExpr),
+
+ Val("'a'", bignum.Int('a')),
+ Val("'\\uffff'", bignum.Int('\uffff')),
+ Val("'\\n'", bignum.Int('\n')),
+ CErr("''+x", badCharLit),
+ // Produces two parse errors
+ //CErr("'''", ""),
+ CErr("'\n'", badCharLit),
+ CErr("'\\z'", illegalEscape),
+ CErr("'ab'", badCharLit),
+
+ Val("1.0", bignum.Rat(1, 1)),
+ Val("1.", bignum.Rat(1, 1)),
+ Val(".1", bignum.Rat(1, 10)),
+ Val("1e2", bignum.Rat(100, 1)),
+
+ Val("\"abc\"", "abc"),
+ Val("\"\"", ""),
+ Val("\"\\n\\\"\"", "\n\""),
+ CErr("\"\\z\"", illegalEscape),
+ CErr("\"abc", "string not terminated"),
+
+ Val("\"abc\" \"def\"", "abcdef"),
+ CErr("\"abc\" \"\\z\"", illegalEscape),
+
+ Val("(i)", 1),
+
+ Val("ai[0]", 1),
+ Val("(&ai)[0]", 1),
+ Val("ai[1]", 2),
+ Val("ai[i]", 2),
+ Val("ai[u]", 2),
+ CErr("ai[f]", opTypes),
+ CErr("ai[0][0]", opTypes),
+ CErr("ai[2]", "index 2 exceeds"),
+ CErr("ai[1+1]", "index 2 exceeds"),
+ CErr("ai[-1]", "negative index"),
+ RErr("ai[i+i]", "index 2 exceeds"),
+ RErr("ai[-i]", "negative index"),
+ CErr("i[0]", opTypes),
+ CErr("f[0]", opTypes),
+
+ Val("aai[0][0]", 1),
+ Val("aai[1][1]", 4),
+ CErr("aai[2][0]", "index 2 exceeds"),
+ CErr("aai[0][2]", "index 2 exceeds"),
+
+ Val("sli[0]", 1),
+ Val("sli[1]", 2),
+ CErr("sli[-1]", "negative index"),
+ RErr("sli[-i]", "negative index"),
+ RErr("sli[2]", "index 2 exceeds"),
+
+ Val("s[0]", uint8('a')),
+ Val("s[1]", uint8('b')),
+ CErr("s[-1]", "negative index"),
+ RErr("s[-i]", "negative index"),
+ RErr("s[3]", "index 3 exceeds"),
+
+ CErr("1(2)", "cannot call"),
+ CErr("fn(1,2)", "too many"),
+ CErr("fn()", "not enough"),
+ CErr("fn(true)", opTypes),
+ CErr("fn(true)", "function call"),
+ // Single argument functions don't say which argument.
+ //CErr("fn(true)", "argument 1"),
+ Val("fn(1)", 2),
+ Val("fn(1.0)", 2),
+ CErr("fn(1.5)", constantTruncated),
+ Val("fn(i)", 2),
+ CErr("fn(u)", opTypes),
+
+ CErr("void()+2", opTypes),
+ CErr("oneTwo()+2", opTypes),
+
+ Val("cap(ai)", 2),
+ Val("cap(&ai)", 2),
+ Val("cap(aai)", 2),
+ Val("cap(sli)", 3),
+ CErr("cap(0)", opTypes),
+ CErr("cap(i)", opTypes),
+ CErr("cap(s)", opTypes),
+
+ Val("len(s)", 3),
+ Val("len(ai)", 2),
+ Val("len(&ai)", 2),
+ Val("len(aai)", 2),
+ Val("len(sli)", 2),
+ // TODO(austin) Test len of map
+ CErr("len(0)", opTypes),
+ CErr("len(i)", opTypes),
+
+ CErr("*i", opTypes),
+ Val("*&i", 1),
+ Val("*&(i)", 1),
+ CErr("&1", badAddrOf),
+ CErr("&c", badAddrOf),
+ Val("*(&ai[0])", 1),
+
+ Val("+1", bignum.Int(+1)),
+ Val("+1.0", bignum.Rat(1, 1)),
+ CErr("+\"x\"", opTypes),
+
+ Val("-42", bignum.Int(-42)),
+ Val("-i", -1),
+ Val("-f", -1.0),
+ // 6g bug?
+ //Val("-(f-1)", -0.0),
+ CErr("-\"x\"", opTypes),
+
+ // TODO(austin) Test unary !
+
+ Val("^2", bignum.Int(^2)),
+ Val("^(-2)", bignum.Int(^(-2))),
+ CErr("^2.0", opTypes),
+ CErr("^2.5", opTypes),
+ Val("^i", ^1),
+ Val("^u", ^uint(1)),
+ CErr("^f", opTypes),
+
+ Val("1+i", 2),
+ Val("1+u", uint(2)),
+ Val("3.0+i", 4),
+ Val("1+1", bignum.Int(2)),
+ Val("f+f", 2.0),
+ Val("1+f", 2.0),
+ Val("1.0+1", bignum.Rat(2, 1)),
+ Val("\"abc\" + \"def\"", "abcdef"),
+ CErr("i+u", opTypes),
+ CErr("-1+u", constantUnderflows),
+ // TODO(austin) Test named types
+
+ Val("2-1", bignum.Int(1)),
+ Val("2.0-1", bignum.Rat(1, 1)),
+ Val("f-2", -1.0),
+ // TOOD(austin) bignum can't do negative 0?
+ //Val("-0.0", XXX),
+ Val("2*2", bignum.Int(4)),
+ Val("2*i", 2),
+ Val("3/2", bignum.Int(1)),
+ Val("3/i", 3),
+ CErr("1/0", divByZero),
+ CErr("1.0/0", divByZero),
+ RErr("i/0", divByZero),
+ Val("3%2", bignum.Int(1)),
+ Val("i%2", 1),
+ CErr("3%0", divByZero),
+ CErr("3.0%0", opTypes),
+ RErr("i%0", divByZero),
+
+ // Examples from "Arithmetic operators"
+ Val("5/3", bignum.Int(1)),
+ Val("(i+4)/(i+2)", 1),
+ Val("5%3", bignum.Int(2)),
+ Val("(i+4)%(i+2)", 2),
+ Val("-5/3", bignum.Int(-1)),
+ Val("(i-6)/(i+2)", -1),
+ Val("-5%3", bignum.Int(-2)),
+ Val("(i-6)%(i+2)", -2),
+ Val("5/-3", bignum.Int(-1)),
+ Val("(i+4)/(i-4)", -1),
+ Val("5%-3", bignum.Int(2)),
+ Val("(i+4)%(i-4)", 2),
+ Val("-5/-3", bignum.Int(1)),
+ Val("(i-6)/(i-4)", 1),
+ Val("-5%-3", bignum.Int(-2)),
+ Val("(i-6)%(i-4)", -2),
+
+ // Examples from "Arithmetic operators"
+ Val("11/4", bignum.Int(2)),
+ Val("(i+10)/4", 2),
+ Val("11%4", bignum.Int(3)),
+ Val("(i+10)%4", 3),
+ Val("11>>2", bignum.Int(2)),
+ Val("(i+10)>>2", 2),
+ Val("11&3", bignum.Int(3)),
+ Val("(i+10)&3", 3),
+ Val("-11/4", bignum.Int(-2)),
+ Val("(i-12)/4", -2),
+ Val("-11%4", bignum.Int(-3)),
+ Val("(i-12)%4", -3),
+ Val("-11>>2", bignum.Int(-3)),
+ Val("(i-12)>>2", -3),
+ Val("-11&3", bignum.Int(1)),
+ Val("(i-12)&3", 1),
+
+ // TODO(austin) Test bit ops
+
+ // For shift, we try nearly every combination of positive
+ // ideal int, negative ideal int, big ideal int, ideal
+ // fractional float, ideal non-fractional float, int, uint,
+ // and float.
+ Val("2<<2", bignum.Int(2<<2)),
+ CErr("2<<(-1)", constantUnderflows),
+ CErr("2<<0x10000000000000000", constantOverflows),
+ CErr("2<<2.5", constantTruncated),
+ Val("2<<2.0", bignum.Int(2<<2.0)),
+ CErr("2<<i", mustBeUnsigned),
+ Val("2<<u", 2<<1),
+ CErr("2<<f", opTypes),
+
+ Val("-2<<2", bignum.Int(-2<<2)),
+ CErr("-2<<(-1)", constantUnderflows),
+ CErr("-2<<0x10000000000000000", constantOverflows),
+ CErr("-2<<2.5", constantTruncated),
+ Val("-2<<2.0", bignum.Int(-2<<2.0)),
+ CErr("-2<<i", mustBeUnsigned),
+ Val("-2<<u", -2<<1),
+ CErr("-2<<f", opTypes),
+
+ Val("0x10000000000000000<<2", hugeInteger.Shl(2)),
+ CErr("0x10000000000000000<<(-1)", constantUnderflows),
+ CErr("0x10000000000000000<<0x10000000000000000", constantOverflows),
+ CErr("0x10000000000000000<<2.5", constantTruncated),
+ Val("0x10000000000000000<<2.0", hugeInteger.Shl(2)),
+ CErr("0x10000000000000000<<i", mustBeUnsigned),
+ CErr("0x10000000000000000<<u", constantOverflows),
+ CErr("0x10000000000000000<<f", opTypes),
+
+ CErr("2.5<<2", opTypes),
+ CErr("2.0<<2", opTypes),
+
+ Val("i<<2", 1<<2),
+ CErr("i<<(-1)", constantUnderflows),
+ CErr("i<<0x10000000000000000", constantOverflows),
+ CErr("i<<2.5", constantTruncated),
+ Val("i<<2.0", 1<<2),
+ CErr("i<<i", mustBeUnsigned),
+ Val("i<<u", 1<<1),
+ CErr("i<<f", opTypes),
+ Val("i<<u", 1<<1),
+
+ Val("u<<2", uint(1<<2)),
+ CErr("u<<(-1)", constantUnderflows),
+ CErr("u<<0x10000000000000000", constantOverflows),
+ CErr("u<<2.5", constantTruncated),
+ Val("u<<2.0", uint(1<<2)),
+ CErr("u<<i", mustBeUnsigned),
+ Val("u<<u", uint(1<<1)),
+ CErr("u<<f", opTypes),
+ Val("u<<u", uint(1<<1)),
+
+ CErr("f<<2", opTypes),
+
+ // <, <=, >, >=
+ Val("1<2", 1<2),
+ Val("1<=2", 1<=2),
+ Val("2<=2", 2<=2),
+ Val("1>2", 1>2),
+ Val("1>=2", 1>=2),
+ Val("2>=2", 2>=2),
+
+ Val("i<2", 1<2),
+ Val("i<=2", 1<=2),
+ Val("i+1<=2", 2<=2),
+ Val("i>2", 1>2),
+ Val("i>=2", 1>=2),
+ Val("i+1>=2", 2>=2),
+
+ Val("u<2", 1<2),
+ Val("f<2", 1<2),
+
+ Val("s<\"b\"", true),
+ Val("s<\"a\"", false),
+ Val("s<=\"abc\"", true),
+ Val("s>\"aa\"", true),
+ Val("s>\"ac\"", false),
+ Val("s>=\"abc\"", true),
+
+ CErr("i<u", opTypes),
+ CErr("i<f", opTypes),
+ CErr("i<s", opTypes),
+ CErr("&i<&i", opTypes),
+ CErr("ai<ai", opTypes),
+
+ // ==, !=
+ Val("1==1", true),
+ Val("1!=1", false),
+ Val("1==2", false),
+ Val("1!=2", true),
+
+ Val("1.0==1", true),
+ Val("1.5==1", false),
+
+ Val("i==1", true),
+ Val("i!=1", false),
+ Val("i==2", false),
+ Val("i!=2", true),
+
+ Val("u==1", true),
+ Val("f==1", true),
+
+ Val("s==\"abc\"", true),
+ Val("s!=\"abc\"", false),
+ Val("s==\"abcd\"", false),
+ Val("s!=\"abcd\"", true),
+
+ Val("&i==&i", true),
+ Val("&i==&i2", false),
+
+ Val("fn==fn", true),
+ Val("fn==func(int)int{return 0}", false),
+
+ CErr("i==u", opTypes),
+ CErr("i==f", opTypes),
+ CErr("&i==&f", opTypes),
+ CErr("ai==ai", opTypes),
+ CErr("t==t", opTypes),
+ CErr("fn==oneTwo", opTypes),
+}
+
+func TestExpr(t *testing.T) {
+ runTests(t, "exprTests", exprTests);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-05-09 16:04:30 +0000