public void PatchAddContextTest()
{
diff_match_patchTest dmp = new diff_match_patchTest();
dmp.Patch_Margin = 4;
Patch p;
p = dmp.PatchFromText("@@ -21,4 +21,10 @@\n-jump\n+somersault\n") [0];
dmp.PatchAddContext(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(), "PatchAddContext: Simple case.");
p = dmp.PatchFromText("@@ -21,4 +21,10 @@\n-jump\n+somersault\n")[0];
dmp.PatchAddContext(p, "The quick brown fox jumps.");
Assert.AreEqual("@@ -17,10 +17,16 @@\n fox \n-jump\n+somersault\n s.\n", p.ToString(), "PatchAddContext: Not enough trailing context.");
p = dmp.PatchFromText("@@ -3 +3,2 @@\n-e\n+at\n")[0];
dmp.PatchAddContext(p, "The quick brown fox jumps.");
Assert.AreEqual("@@ -1,7 +1,8 @@\n Th\n-e\n+at\n qui\n", p.ToString(), "PatchAddContext: Not enough leading context.");
p = dmp.PatchFromText("@@ -3 +3,2 @@\n-e\n+at\n")[0];
dmp.PatchAddContext(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(), "PatchAddContext: Ambiguity.");
}
public void PatchMakeTest()
{
diff_match_patchTest dmp = new diff_match_patchTest();
List<Patch> patches;
patches = dmp.PatchMake("", "");
Assert.AreEqual("", dmp.PatchToText(patches), "PatchMake: Null case.");
string text1 = "The quick brown fox jumps over the lazy dog.";
string text2 = "That quick brown fox jumped over a lazy dog.";
string expectedPatch = "@@ -1,8 +1,7 @@\n Th\n-at\n+e\n qui\n@@ -21,17 +21,18 @@\n jump\n-ed\n+s\n over \n-a\n+the\n laz\n";
// The second patch must be "-21,17 +21,18", not "-22,17 +21,18" due to rolling context.
patches = dmp.PatchMake(text2, text1);
Assert.AreEqual(expectedPatch, dmp.PatchToText(patches), "PatchMake: Text2+Text1 inputs.");
expectedPatch = "@@ -1,11 +1,12 @@\n Th\n-e\n+at\n quick b\n@@ -22,18 +22,17 @@\n jump\n-s\n+ed\n over \n-the\n+a\n laz\n";
patches = dmp.PatchMake(text1, text2);
Assert.AreEqual(expectedPatch, dmp.PatchToText(patches), "PatchMake: Text1+Text2 inputs.");
List<Diff> diffs = dmp.DiffMain(text1, text2, false);
patches = dmp.PatchMake(diffs);
Assert.AreEqual(expectedPatch, dmp.PatchToText(patches), "PatchMake: Diff input.");
patches = dmp.PatchMake(text1, diffs);
Assert.AreEqual(expectedPatch, dmp.PatchToText(patches), "PatchMake: Text1+Diff inputs.");
patches = dmp.PatchMake(text1, text2, diffs);
Assert.AreEqual(expectedPatch, dmp.PatchToText(patches), "PatchMake: Text1+Text2+Diff inputs (deprecated).");
patches = dmp.PatchMake("`1234567890-=[]\\;',./", "~!@#$%^&*()_+{}|:\"<>?");
Assert.AreEqual("@@ -1,21 +1,21 @@\n-%601234567890-=%5b%5d%5c;',./\n+~!@#$%25%5e&*()_+%7b%7d%7c:%22%3c%3e?\n",
dmp.PatchToText(patches),
"PatchToText: Character encoding.");
diffs = new List<Diff> {
new Diff(Operation.DELETE, "`1234567890-=[]\\;',./"),
new Diff(Operation.INSERT, "~!@#$%^&*()_+{}|:\"<>?")};
CollectionAssert.AreEqual(diffs,
dmp.PatchFromText("@@ -1,21 +1,21 @@\n-%601234567890-=%5B%5D%5C;',./\n+~!@#$%25%5E&*()_+%7B%7D%7C:%22%3C%3E?\n") [0].diffs,
"PatchFromText: Character decoding.");
text1 = "";
for (int x = 0; x < 100; x++) {
text1 += "abcdef";
}
text2 = text1 + "123";
expectedPatch = "@@ -573,28 +573,31 @@\n cdefabcdefabcdefabcdefabcdef\n+123\n";
patches = dmp.PatchMake(text1, text2);
Assert.AreEqual(expectedPatch, dmp.PatchToText(patches), "PatchMake: Long string with repeats.");
// Test null inputs -- not needed because nulls can't be passed in C#.
}
public void PatchToTextTest()
{
diff_match_patchTest dmp = new diff_match_patchTest();
string strp = "@@ -21,18 +22,17 @@\n jump\n-s\n+ed\n over \n-the\n+a\n laz\n";
List<Patch> patches;
patches = dmp.PatchFromText(strp);
string result = dmp.PatchToText(patches);
Assert.AreEqual(strp, result);
strp = "@@ -1,9 +1,9 @@\n-f\n+F\n oo+fooba\n@@ -7,9 +7,9 @@\n obar\n-,\n+.\n tes\n";
patches = dmp.PatchFromText(strp);
result = dmp.PatchToText(patches);
Assert.AreEqual(strp, result);
}
public void PatchFromTextTest()
{
diff_match_patchTest dmp = new diff_match_patchTest();
Assert.IsTrue(dmp.PatchFromText("").Count == 0, "PatchFromText: #0.");
string strp = "@@ -21,18 +22,17 @@\n jump\n-s\n+ed\n over \n-the\n+a\n %0alaz\n";
Assert.AreEqual(strp, dmp.PatchFromText(strp)[0].ToString(), "PatchFromText: #1.");
Assert.AreEqual("@@ -1 +1 @@\n-a\n+b\n", dmp.PatchFromText("@@ -1 +1 @@\n-a\n+b\n")[0].ToString(), "PatchFromText: #2.");
Assert.AreEqual("@@ -1,3 +0,0 @@\n-abc\n", dmp.PatchFromText("@@ -1,3 +0,0 @@\n-abc\n") [0].ToString(), "PatchFromText: #3.");
Assert.AreEqual("@@ -0,0 +1,3 @@\n+abc\n", dmp.PatchFromText("@@ -0,0 +1,3 @@\n+abc\n") [0].ToString(), "PatchFromText: #4.");
// Generates error.
try {
dmp.PatchFromText("Bad\nPatch\n");
Assert.Fail("PatchFromText: #5.");
} catch (ArgumentException) {
// Exception expected.
}
}