Fix [Bug 2954959] expr abs(-0.0) is -0.0

Added some test cases, adapted and backported from 8.5

1 files changed, 19 insertions, 2 deletions

diff --git a/tests/expr.test b/tests/expr.test
index 7146914..03bb1bd 100644
--- a/tests/expr.test
+++ b/tests/expr.test
@@ -10,7 +10,7 @@
 # See the file "license.terms" for information on usage and redistribution
 # of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 #
-# RCS: @(#) $Id: expr.test,v 1.17.2.12 2006/03/23 16:40:32 dgp Exp $
+# RCS: @(#) $Id: expr.test,v 1.17.2.13 2010/02/22 23:19:16 nijtmans Exp $
 
 if {[lsearch [namespace children] ::tcltest] == -1} {
     package require tcltest
@@ -299,7 +299,10 @@ test expr-8.11 {CompileEqualityExpr: error compiling equality arm} {
     set msg
 } {syntax error in expression "2!=x": variable references require preceding $}
 test expr-8.12 {CompileBitAndExpr: equality expr} {expr {"a"eq"a"}} 1
-test expr-8.13 {CompileBitAndExpr: equality expr} {expr {"\374" eq "ü"}} 1
+test expr-8.13 {CompileBitAndExpr: equality expr} {
+    set s \u00fc
+    expr {"\374" eq $s}
+} 1
 test expr-8.14 {CompileBitAndExpr: equality expr} {expr 3eq2} 0
 test expr-8.15 {CompileBitAndExpr: equality expr} {expr 2.0eq2} 0
 test expr-8.16 {CompileBitAndExpr: equality expr} {expr 3.2ne2.2} 1
@@ -826,6 +829,20 @@ test expr-24.9 {expr edge cases; shifting} {expr 5>>32} 0
 test expr-38.1 {abs of smallest 32-bit integer [Bug 1241572]} {wideIs64bit} {
     expr {abs(int(-2147483648))}
 } 2147483648
+test expr-38.2 {abs and -0 [Bug 1893815]} {
+    expr {abs(-0)}
+} 0
+test expr-38.3 {abs and -0 [Bug 1893815]} {
+    expr {abs(-0.0)}
+} 0.0
+# tests 38.4 to 38.8 not backported
+test expr-38.9 {abs and 0.0 [Bug 2954959]} {
+    expr {abs(0.0)}
+} 0.0
+test expr-38.10 {abs and -0x0 [Bug 2954959]} {
+    expr {abs(-0x0)}
+} 0
+# tests 38.11 to 38.13 not backported
 
 test expr-46.1 {round() rounds to +-infinity} {
     expr round(0.5)