Merge pull request #2335 from andreynering/highlight-diff

Highlight diff

1 files changed, 70 insertions, 0 deletions

diff --git a/models/git_diff_test.go b/models/git_diff_test.go
new file mode 100644
index 00000000..a7b9bdd6
--- /dev/null
+++ b/models/git_diff_test.go
@@ -0,0 +1,70 @@
+package models
+
+import (
+  dmp "github.com/sergi/go-diff/diffmatchpatch"
+  "html/template"
+  "testing"
+)
+
+func assertEqual(t *testing.T, s1 string, s2 template.HTML) {
+  if s1 != string(s2) {
+    t.Errorf("%s should be equal %s", s2, s1)
+  }
+}
+
+func assertLineEqual(t *testing.T, d1 *DiffLine, d2 *DiffLine) {
+  if d1 != d2 {
+    t.Errorf("%v should be equal %v", d1, d2)
+  }
+}
+
+func TestDiffToHtml(t *testing.T) {
+  assertEqual(t, "foo <span class=\"added-code\">bar</span> biz", diffToHtml([]dmp.Diff{
+    dmp.Diff{dmp.DiffEqual, "foo "},
+    dmp.Diff{dmp.DiffInsert, "bar"},
+    dmp.Diff{dmp.DiffDelete, " baz"},
+    dmp.Diff{dmp.DiffEqual, " biz"},
+  }, DIFF_LINE_ADD))
+
+  assertEqual(t, "foo <span class=\"removed-code\">bar</span> biz", diffToHtml([]dmp.Diff{
+    dmp.Diff{dmp.DiffEqual, "foo "},
+    dmp.Diff{dmp.DiffDelete, "bar"},
+    dmp.Diff{dmp.DiffInsert, " baz"},
+    dmp.Diff{dmp.DiffEqual, " biz"},
+  }, DIFF_LINE_DEL))
+}
+
+// test if GetLine is return the correct lines
+func TestGetLine(t *testing.T) {
+  ds := DiffSection{Lines: []*DiffLine{
+    &DiffLine{LeftIdx: 28,  RightIdx:   28, Type: DIFF_LINE_PLAIN},
+    &DiffLine{LeftIdx: 29,  RightIdx:   29, Type: DIFF_LINE_PLAIN},
+    &DiffLine{LeftIdx: 30,  RightIdx:   30, Type: DIFF_LINE_PLAIN},
+    &DiffLine{LeftIdx: 31,  RightIdx:    0, Type: DIFF_LINE_DEL},
+    &DiffLine{LeftIdx:  0,  RightIdx:   31, Type: DIFF_LINE_ADD},
+    &DiffLine{LeftIdx:  0,  RightIdx:   32, Type: DIFF_LINE_ADD},
+    &DiffLine{LeftIdx: 32,  RightIdx:   33, Type: DIFF_LINE_PLAIN},
+    &DiffLine{LeftIdx: 33,  RightIdx:    0, Type: DIFF_LINE_DEL},
+    &DiffLine{LeftIdx: 34,  RightIdx:    0, Type: DIFF_LINE_DEL},
+    &DiffLine{LeftIdx: 35,  RightIdx:    0, Type: DIFF_LINE_DEL},
+    &DiffLine{LeftIdx: 36,  RightIdx:    0, Type: DIFF_LINE_DEL},
+    &DiffLine{LeftIdx:  0,  RightIdx:   34, Type: DIFF_LINE_ADD},
+    &DiffLine{LeftIdx:  0,  RightIdx:   35, Type: DIFF_LINE_ADD},
+    &DiffLine{LeftIdx:  0,  RightIdx:   36, Type: DIFF_LINE_ADD},
+    &DiffLine{LeftIdx:  0,  RightIdx:   37, Type: DIFF_LINE_ADD},
+    &DiffLine{LeftIdx: 37,  RightIdx:   38, Type: DIFF_LINE_PLAIN},
+    &DiffLine{LeftIdx: 38,  RightIdx:   39, Type: DIFF_LINE_PLAIN},
+  }}
+
+  assertLineEqual(t, ds.GetLine(DIFF_LINE_ADD, 31), ds.Lines[4])
+  assertLineEqual(t, ds.GetLine(DIFF_LINE_DEL, 31), ds.Lines[3])
+
+  assertLineEqual(t, ds.GetLine(DIFF_LINE_ADD, 33), ds.Lines[11])
+  assertLineEqual(t, ds.GetLine(DIFF_LINE_ADD, 34), ds.Lines[12])
+  assertLineEqual(t, ds.GetLine(DIFF_LINE_ADD, 35), ds.Lines[13])
+  assertLineEqual(t, ds.GetLine(DIFF_LINE_ADD, 36), ds.Lines[14])
+  assertLineEqual(t, ds.GetLine(DIFF_LINE_DEL, 34), ds.Lines[7])
+  assertLineEqual(t, ds.GetLine(DIFF_LINE_DEL, 35), ds.Lines[8])
+  assertLineEqual(t, ds.GetLine(DIFF_LINE_DEL, 36), ds.Lines[9])
+  assertLineEqual(t, ds.GetLine(DIFF_LINE_DEL, 37), ds.Lines[10])
+}