more tests, more bug fixes for custom formats

git-svn-id: https://svn.code.sf.net/p/jackcess/code/jackcess/branches/jdk8@1270 f203690c-595d-4dc9-a70b-905162fa7fd2

src/main/java/com/healthmarketscience/jackcess/impl/expr/FormatUtil.java

@@ -936,7 +936,6 @@ public class FormatUtil
   private static Fmt parseCustomTextFormat(ExprBuf buf, Args args) {
 
     Fmt fmt = null;
-    Fmt emptyFmt = null;
 
     List<BiConsumer<StringBuilder,CharSource>> subFmts = new ArrayList<>();
     int numPlaceholders = 0;
@@ -1037,11 +1036,12 @@ public class FormatUtil
 
     flushPendingTextLiteral(pendingLiteral, subFmts);
 
+    Fmt emptyFmt = null;
     if(fmt == null) {
       fmt = new CharSourceFmt(subFmts, numPlaceholders, rightAligned,
                               textCase);
       emptyFmt = NULL_FMT;
-    } else if(emptyFmt == null) {
+    } else {
       emptyFmt = (hasFmtChars ?
                   new CharSourceFmt(subFmts, numPlaceholders, rightAligned,
                                     textCase) :
@@ -1438,10 +1438,18 @@ public class FormatUtil
     private Value formatMaybeZero(BigDecimal bd, NumberFormat fmt) {
       // in theory we want to use the given format.  however, if, due to
       // rounding, we end up with a number equivalent to zero, then we fall
-      // back to the zero format
-      int maxDecDigits = fmt.getMaximumFractionDigits();
-      if(maxDecDigits < bd.scale()) {
-        bd = bd.setScale(maxDecDigits, NumberFormatter.ROUND_MODE);
+      // back to the zero format.  if we are using scientific notation,
+      // however, then don't worry about this
+      if(!(fmt instanceof NumberFormatter.ScientificFormat)) {
+        int maxDecDigits = fmt.getMaximumFractionDigits();
+        int mult = ((DecimalFormat)fmt).getMultiplier();
+        while(mult > 1) {
+          ++maxDecDigits;
+          mult /= 10;
+        }
+        if(maxDecDigits < bd.scale()) {
+          bd = bd.setScale(maxDecDigits, NumberFormatter.ROUND_MODE);
+        }
       }
       if(BigDecimal.ZERO.compareTo(bd) == 0) {
         // fall back to zero format

src/test/java/com/healthmarketscience/jackcess/impl/expr/DefaultFunctionsTest.java

@@ -347,6 +347,8 @@ public class DefaultFunctionsTest extends TestCase
                "=Format('3.9', '*~dddd, yy mmm d, hh:nn:ss \\Y[Yellow]')");
     assertEval("Tuesday, 00 Jan 01/2, 09:36:00 PM",
                "=Format('3.9', 'dddd, yy mmm mm/d, hh:nn:ss AMPM')");
+    assertEval("9:36:00 PM",
+               "=Format('3.9', 'ttttt')");
     assertEval("foo",
                "=Format('foo', 'dddd, yy mmm mm d, hh:nn:ss AMPM')");
 
@@ -390,24 +392,46 @@ public class DefaultFunctionsTest extends TestCase
                      "", "''",
                      "", "Null");
 
-    assertEvalFormat("'\"p\"#.00#\"blah\";(\"p\"#.00#\"blah\");\"zero\";\"yuck\"'",
+    assertEvalFormat("'\\p#.00#\"blah\";*~(\"p\"#.00#\"blah\");\"zero\";\"yuck\"'",
                      "p13.00blah", "13",
                      "(p13.00blah)", "-13",
                      "zero", "0",
                      "", "''",
                      "yuck", "Null");
 
-    assertEvalFormat("'0.##;(0.###);\"zero\";\"yuck\"'",
+    assertEvalFormat("'0.##;(0.###);\"zero\";\"yuck\";'",
                      "0.03", "0.03",
                      "zero", "0.003",
                      "(0.003)", "-0.003",
                      "zero", "-0.0003");
 
-    // FIXME, need to handle rounding w/ negatives
-    // FIXME, need to handle dangling decimal
-    // assertEvalFormat("'0.##;(0.###E+0)'",
-    //                  "0.03", "0.03",
-    //                  "(0.003)", "-0.0003",
+    assertEvalFormat("'0.##;(0.###E+0)'",
+                     "0.03", "0.03",
+                     "(3.E-4)", "-0.0003",
+                     "0.", "0",
+                     "34223.", "34223",
+                     "(3.422E+4)", "-34223");
+
+    assertEvalFormat("'0.###E-0'",
+                     "3.E-4", "0.0003",
+                     "3.422E4", "34223"
+                     );
+
+    assertEvalFormat("'0.###e+0'",
+                     "3.e-4", "0.0003",
+                     "3.422e+4", "34223"
+                     );
+
+    assertEvalFormat("'0.###e-0'",
+                     "3.e-4", "0.0003",
+                     "3.422e4", "34223"
+                     );
+
+    assertEvalFormat("'#,##0.###'",
+                     "0.003", "0.003",
+                     "0.", "0.0003",
+                     "34,223.", "34223"
+                     );
 
     assertEvalFormat("'0.'",
                      "13.", "13",
@@ -434,6 +458,14 @@ public class DefaultFunctionsTest extends TestCase
                      "0", "0"
                      );
 
+    assertEvalFormat("'%0'",
+                     "%13", "0.13",
+                     "%0", "0.003",
+                     "-%45", "-0.45",
+                     "%0", "-0.003",
+                     "%0", "0"
+                     );
+
     assertEvalFormat("'#'",
                      "13", "13",
                      "0", "0.003",
@@ -467,14 +499,14 @@ public class DefaultFunctionsTest extends TestCase
                      "", "''",
                      "", "Null");
 
-    assertEvalFormat("'!>@'",
+    assertEvalFormat("'!>@;'",
                      "O", "'foo'",
                      "3", "-13",
                      "0", "0",
                      "", "''",
                      "", "Null");
 
-    assertEvalFormat("'!>@[Red];\"empty\"'",
+    assertEvalFormat("'!>*~@[Red];\"empty\";'",
                      "O", "'foo'",
                      "3", "-13",
                      "0", "0",