public void patch_addContextTest()
{
var dmp = new diff_match_patchTest{Patch_Margin = 4};
Patch p = dmp.patch_fromText("@@ -21,4 +21,10 @@\n-jump\n+somersault\n")[0];
dmp.patch_addContext(p, "The quick brown fox jumps over the lazy dog.");
Assert.AreEqual("@@ -17,12 +17,18 @@\n fox \n-jump\n+somersault\n s ov\n", p.ToString(), "patch_addContext: Simple case.");
p = dmp.patch_fromText("@@ -21,4 +21,10 @@\n-jump\n+somersault\n")[0];
dmp.patch_addContext(p, "The quick brown fox jumps.");
Assert.AreEqual("@@ -17,10 +17,16 @@\n fox \n-jump\n+somersault\n s.\n", p.ToString(), "patch_addContext: Not enough trailing context.");
p = dmp.patch_fromText("@@ -3 +3,2 @@\n-e\n+at\n")[0];
dmp.patch_addContext(p, "The quick brown fox jumps.");
Assert.AreEqual("@@ -1,7 +1,8 @@\n Th\n-e\n+at\n qui\n", p.ToString(), "patch_addContext: Not enough leading context.");
p = dmp.patch_fromText("@@ -3 +3,2 @@\n-e\n+at\n")[0];
dmp.patch_addContext(p, "The quick brown fox jumps. The quick brown fox crashes.");
Assert.AreEqual("@@ -1,27 +1,28 @@\n Th\n-e\n+at\n quick brown fox jumps. \n", p.ToString(), "patch_addContext: Ambiguity.");
}