[lmi-commits] [lmi] master d54979e 2/3: Augment unit test

[Greg Chicares]

branch: master
commit d54979e8a287b5b2aa4c1a92ad5a79749457ca19
Author: Gregory W. Chicares <address@hidden>
Commit: Gregory W. Chicares <address@hidden>

    Augment unit test
---
 report_table_test.cpp | 36 +++++++++++++++++++++++++++++++++---
 1 file changed, 33 insertions(+), 3 deletions(-)

diff --git a/report_table_test.cpp b/report_table_test.cpp
index 5b2b20c..e722148 100644
--- a/report_table_test.cpp
+++ b/report_table_test.cpp
@@ -128,9 +128,39 @@ void report_table_test::test_bloat()
 
 void report_table_test::test_generally()
 {
-    std::vector<table_column_info> v = bloat({1, 2, 3}, {0, 0, 0});
-    set_column_widths(13, 1, v);
-    std::vector<int> const expected = {3, 4, 5};
+    std::vector<table_column_info> v;
+    std::vector<int> expected;
+
+    // Width with default margins (12) = maximum available page width.
+    v = bloat({1, 2, 3}, {0, 0, 0});
+    set_column_widths(12, 1, v);
+    expected = {3, 4, 5};
+    BOOST_TEST(widths(v) == expected);
+
+    // Same columns: same layout, even if page is much wider (99).
+    v = bloat({1, 2, 3}, {0, 0, 0});
+    set_column_widths(99, 1, v);
+    BOOST_TEST(widths(v) == expected);
+
+    // An elastic column occupies all available space not claimed by
+    // inelastic columns...
+    v = bloat({1, 2, 0, 3}, {0, 0, 1, 0});
+    set_column_widths(99, 1, v);
+    expected = {3, 4, (99-12), 5};
+    BOOST_TEST(widths(v) == expected);
+    // ...though its width might happen to be zero (PDF !! but see
+    //   https://lists.nongnu.org/archive/html/lmi/2018-07/msg00049.html
+    // which questions whether zero should be allowed):
+    v = bloat({1, 2, 0, 3}, {0, 0, 1, 0});
+    set_column_widths(12, 1, v);
+    expected = {3, 4, 0, 5};
+    BOOST_TEST(widths(v) == expected);
+
+    // Multiple elastic columns apportion all unclaimed space among
+    // themselves.
+    v = bloat({1, 2, 0, 3}, {1, 0, 1, 0});
+    set_column_widths(99, 1, v);
+    expected = {45, 4, 45, 5};
     BOOST_TEST(widths(v) == expected);
 }