Added to tests for SVG units, and fixed warning of missing case

(bzr r6498)

3 files changed, 63 insertions, 17 deletions

diff --git a/src/svg/svg-length-test.h b/src/svg/svg-length-test.h
index 829612b26..0f1ca5c95 100644
--- a/src/svg/svg-length-test.h
+++ b/src/svg/svg-length-test.h
@@ -4,6 +4,9 @@
 #include <glib.h>
 #include <utility>
 
+// function internal to svg-length.cpp:
+gchar const *sp_svg_length_get_css_units(SVGLength::Unit unit);
+
 class SvgLengthTest : public CxxTest::TestSuite
 {
 private:
@@ -90,6 +93,47 @@ public:
         }
     }
 
+    void testEnumMappedToString()
+    {
+        for ( int i = (static_cast<int>(SVGLength::NONE) + 1); i <= static_cast<int>(SVGLength::LAST_UNIT); i++ ) {
+            SVGLength::Unit target = static_cast<SVGLength::Unit>(i);
+            // PX is a special case where we don't have a unit string
+            if ( (target != SVGLength::PX) && (target != SVGLength::FOOT) ) {
+                gchar const* val = sp_svg_length_get_css_units(target);
+                TSM_ASSERT_DIFFERS(i, val, "");
+            }
+        }
+    }
+
+    // Ensure that all unit suffix strings used are allowed by SVG
+    void testStringsAreValidSVG()
+    {
+        gchar const* valid[] = {"", "em", "ex", "px", "pt", "pc", "cm", "mm", "in", "%"};
+        std::set<std::string> validStrings(valid, valid + G_N_ELEMENTS(valid));
+        for ( int i = (static_cast<int>(SVGLength::NONE) + 1); i <= static_cast<int>(SVGLength::LAST_UNIT); i++ ) {
+            SVGLength::Unit target = static_cast<SVGLength::Unit>(i);
+            gchar const* val = sp_svg_length_get_css_units(target);
+            TSM_ASSERT(i, validStrings.find(std::string(val)) != validStrings.end());
+        }
+    }
+
+    // Ensure that all unit suffix strings allowed by SVG are covered by enum
+    void testValidSVGStringsSupported()
+    {
+        // Note that "px" is ommitted from the list, as it will be assumed to be so if not explicitly set.
+        gchar const* valid[] = {"em", "ex", "pt", "pc", "cm", "mm", "in", "%"};
+        std::set<std::string> validStrings(valid, valid + G_N_ELEMENTS(valid));
+        for ( int i = (static_cast<int>(SVGLength::NONE) + 1); i <= static_cast<int>(SVGLength::LAST_UNIT); i++ ) {
+            SVGLength::Unit target = static_cast<SVGLength::Unit>(i);
+            gchar const* val = sp_svg_length_get_css_units(target);
+            std::set<std::string>::iterator iter = validStrings.find(std::string(val));
+            if (iter != validStrings.end()) {
+                validStrings.erase(iter);
+            }
+        }
+        TSM_ASSERT_EQUALS(validStrings, validStrings.size(), 0);
+    }
+
     // TODO: More tests
 };
 
diff --git a/src/svg/svg-length.cpp b/src/svg/svg-length.cpp
index 8c2a8caf3..505ca4ad9 100644
--- a/src/svg/svg-length.cpp
+++ b/src/svg/svg-length.cpp
@@ -508,6 +508,7 @@ gchar const *sp_svg_length_get_css_units(SVGLength::Unit unit)
         case SVGLength::MM: return "mm";
         case SVGLength::CM: return "cm";
         case SVGLength::INCH: return "in";
+        case SVGLength::FOOT: return ""; // Does not have a "foot" unit string in the SVG spec
         case SVGLength::EM: return "em";
         case SVGLength::EX: return "ex";
         case SVGLength::PERCENT: return "%";
diff --git a/src/svg/svg-length.h b/src/svg/svg-length.h
index 9623d20f3..1f4be8123 100644
--- a/src/svg/svg-length.h
+++ b/src/svg/svg-length.h
@@ -1,5 +1,5 @@
-#ifndef __SP_SVG_LENGTH_H__
-#define __SP_SVG_LENGTH_H__
+#ifndef SEEN_SP_SVG_LENGTH_H
+#define SEEN_SP_SVG_LENGTH_H
 
 /**
  *  \file src/svg/svg-length.h
@@ -21,19 +21,20 @@
 class SVGLength
 {
 public:
-  
+
     enum Unit {
         NONE,
-	PX,
-	PT,
-	PC,
-	MM,
-	CM,
-	INCH,
-	FOOT,
-	EM,
-	EX,
-	PERCENT
+        PX,
+        PT,
+        PC,
+        MM,
+        CM,
+        INCH,
+        FOOT,
+        EM,
+        EX,
+        PERCENT,
+        LAST_UNIT = PERCENT
     };
 
     bool _set;
@@ -43,9 +44,9 @@ public:
 
     float operator=(float v) {
         _set = true;
-	unit = NONE;
-	value = computed = v;
-	return v;
+        unit = NONE;
+        value = computed = v;
+        return v;
     }
 
     bool read(gchar const *str);
@@ -56,7 +57,7 @@ public:
     void update(double em, double ex, double scale);
 };
 
-#endif
+#endif // SEEN_SP_SVG_LENGTH_H
 
 /*
   Local Variables: